./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_init_dynamic_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 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_array_list_init_dynamic_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 ffbf3b1479afd9aaa2ec45fcd2782998a39316f97238379433376f7ba5094eb5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-16 20:01:46,893 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-16 20:01:46,894 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-16 20:01:46,942 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-16 20:01:46,942 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-16 20:01:46,943 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-16 20:01:46,944 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-16 20:01:46,945 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-16 20:01:46,946 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-16 20:01:46,947 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-16 20:01:46,947 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-16 20:01:46,949 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-16 20:01:46,949 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-16 20:01:46,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-16 20:01:46,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-16 20:01:46,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-16 20:01:46,960 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-16 20:01:46,961 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-16 20:01:46,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-16 20:01:46,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-16 20:01:46,969 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-16 20:01:46,976 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-16 20:01:46,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-16 20:01:46,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-16 20:01:46,979 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-16 20:01:46,982 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-16 20:01:46,982 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-16 20:01:46,983 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-16 20:01:46,983 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-16 20:01:46,983 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-16 20:01:46,984 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-16 20:01:46,984 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-16 20:01:46,984 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-16 20:01:46,985 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-16 20:01:46,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-16 20:01:46,986 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-16 20:01:46,986 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-16 20:01:46,986 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-16 20:01:46,987 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-16 20:01:46,987 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-16 20:01:46,988 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-16 20:01:46,988 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-16 20:01:47,005 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-16 20:01:47,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-16 20:01:47,011 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-16 20:01:47,011 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-16 20:01:47,012 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-16 20:01:47,012 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-16 20:01:47,012 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-16 20:01:47,012 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-16 20:01:47,012 INFO L138 SettingsManager]: * Use SBE=true [2021-11-16 20:01:47,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-16 20:01:47,013 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-16 20:01:47,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-16 20:01:47,014 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-16 20:01:47,014 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-16 20:01:47,014 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-16 20:01:47,014 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-16 20:01:47,014 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-16 20:01:47,014 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-16 20:01:47,015 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-16 20:01:47,015 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-16 20:01:47,015 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-16 20:01:47,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-16 20:01:47,015 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-16 20:01:47,015 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-16 20:01:47,015 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-16 20:01:47,016 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-16 20:01:47,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-16 20:01:47,016 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-16 20:01:47,016 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-16 20:01:47,016 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-16 20:01:47,016 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-16 20:01:47,016 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ffbf3b1479afd9aaa2ec45fcd2782998a39316f97238379433376f7ba5094eb5 [2021-11-16 20:01:47,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-16 20:01:47,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-16 20:01:47,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-16 20:01:47,220 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-16 20:01:47,220 INFO L275 PluginConnector]: CDTParser initialized [2021-11-16 20:01:47,221 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_init_dynamic_harness.i [2021-11-16 20:01:47,276 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42e18eb4b/a3f7166edf134ce6bd0b9249a0da42d2/FLAGf66098469 [2021-11-16 20:01:47,813 INFO L306 CDTParser]: Found 1 translation units. [2021-11-16 20:01:47,813 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_init_dynamic_harness.i [2021-11-16 20:01:47,839 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42e18eb4b/a3f7166edf134ce6bd0b9249a0da42d2/FLAGf66098469 [2021-11-16 20:01:48,289 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42e18eb4b/a3f7166edf134ce6bd0b9249a0da42d2 [2021-11-16 20:01:48,290 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-16 20:01:48,291 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-16 20:01:48,292 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-16 20:01:48,292 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-16 20:01:48,294 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-16 20:01:48,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:01:48" (1/1) ... [2021-11-16 20:01:48,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43f7f9cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:01:48, skipping insertion in model container [2021-11-16 20:01:48,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:01:48" (1/1) ... [2021-11-16 20:01:48,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-16 20:01:48,379 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-16 20:01:48,560 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_array_list_init_dynamic_harness.i[4501,4514] [2021-11-16 20:01:48,567 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_array_list_init_dynamic_harness.i[4561,4574] [2021-11-16 20:01:48,581 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-16 20:01:48,585 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-16 20:01:49,036 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-16 20:01:49,100 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:01:49,101 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:01:49,102 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:01:49,104 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:01:49,105 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:01:49,118 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:01:49,118 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:01:49,119 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:01:49,120 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:01:49,120 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:01:49,121 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:01:49,122 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:01:49,122 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:01:49,313 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-16 20:01:49,314 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-16 20:01:49,315 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-16 20:01:49,315 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-16 20:01:49,316 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-16 20:01:49,317 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-16 20:01:49,317 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-16 20:01:49,317 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-16 20:01:49,318 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-16 20:01:49,318 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-16 20:01:49,375 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:01:49,379 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:01:49,418 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-16 20:01:49,450 INFO L203 MainTranslator]: Completed pre-run [2021-11-16 20:01:49,458 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_array_list_init_dynamic_harness.i[4501,4514] [2021-11-16 20:01:49,461 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_array_list_init_dynamic_harness.i[4561,4574] [2021-11-16 20:01:49,462 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-16 20:01:49,463 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-16 20:01:49,484 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-16 20:01:49,493 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:01:49,494 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:01:49,494 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:01:49,494 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:01:49,495 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:01:49,499 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:01:49,499 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:01:49,500 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:01:49,500 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:01:49,501 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:01:49,501 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:01:49,502 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:01:49,502 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:01:49,522 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-16 20:01:49,522 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-16 20:01:49,523 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-16 20:01:49,523 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-16 20:01:49,524 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-16 20:01:49,524 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-16 20:01:49,525 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-16 20:01:49,525 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-16 20:01:49,525 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-16 20:01:49,526 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-16 20:01:49,536 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:01:49,539 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:01:49,551 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-16 20:01:49,703 INFO L208 MainTranslator]: Completed translation [2021-11-16 20:01:49,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:01:49 WrapperNode [2021-11-16 20:01:49,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-16 20:01:49,704 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-16 20:01:49,705 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-16 20:01:49,705 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-16 20:01:49,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:01:49" (1/1) ... [2021-11-16 20:01:49,787 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:01:49" (1/1) ... [2021-11-16 20:01:49,854 INFO L137 Inliner]: procedures = 692, calls = 1563, calls flagged for inlining = 47, calls inlined = 6, statements flattened = 592 [2021-11-16 20:01:49,855 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-16 20:01:49,856 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-16 20:01:49,856 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-16 20:01:49,856 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-16 20:01:49,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:01:49" (1/1) ... [2021-11-16 20:01:49,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:01:49" (1/1) ... [2021-11-16 20:01:49,871 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:01:49" (1/1) ... [2021-11-16 20:01:49,872 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:01:49" (1/1) ... [2021-11-16 20:01:49,888 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:01:49" (1/1) ... [2021-11-16 20:01:49,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:01:49" (1/1) ... [2021-11-16 20:01:49,911 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:01:49" (1/1) ... [2021-11-16 20:01:49,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-16 20:01:49,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-16 20:01:49,932 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-16 20:01:49,932 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-16 20:01:49,933 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:01:49" (1/1) ... [2021-11-16 20:01:49,942 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-16 20:01:49,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:01:49,975 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) [2021-11-16 20:01:49,983 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 [2021-11-16 20:01:50,007 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-11-16 20:01:50,007 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-11-16 20:01:50,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-16 20:01:50,008 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-11-16 20:01:50,008 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-11-16 20:01:50,008 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-16 20:01:50,009 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-16 20:01:50,009 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-11-16 20:01:50,009 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-11-16 20:01:50,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-16 20:01:50,009 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-16 20:01:50,009 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-16 20:01:50,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-16 20:01:50,010 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-16 20:01:50,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-16 20:01:50,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-16 20:01:50,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-16 20:01:50,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-16 20:01:50,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-16 20:01:50,011 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-16 20:01:50,012 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-16 20:01:50,012 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-16 20:01:50,012 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-16 20:01:50,012 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-11-16 20:01:50,012 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-11-16 20:01:50,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-16 20:01:50,013 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-16 20:01:50,013 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-16 20:01:50,013 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-16 20:01:50,013 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2021-11-16 20:01:50,013 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2021-11-16 20:01:50,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-16 20:01:50,014 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-16 20:01:50,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-16 20:01:50,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-16 20:01:50,014 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-16 20:01:50,014 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-16 20:01:50,014 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-16 20:01:50,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-16 20:01:50,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-16 20:01:50,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-16 20:01:50,220 INFO L236 CfgBuilder]: Building ICFG [2021-11-16 20:01:50,221 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-16 20:01:51,521 INFO L277 CfgBuilder]: Performing block encoding [2021-11-16 20:01:51,530 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-16 20:01:51,531 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-16 20:01:51,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:01:51 BoogieIcfgContainer [2021-11-16 20:01:51,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-16 20:01:51,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-16 20:01:51,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-16 20:01:51,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-16 20:01:51,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:01:48" (1/3) ... [2021-11-16 20:01:51,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44d9cb02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:01:51, skipping insertion in model container [2021-11-16 20:01:51,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:01:49" (2/3) ... [2021-11-16 20:01:51,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44d9cb02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:01:51, skipping insertion in model container [2021-11-16 20:01:51,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:01:51" (3/3) ... [2021-11-16 20:01:51,539 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_init_dynamic_harness.i [2021-11-16 20:01:51,544 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-16 20:01:51,544 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-16 20:01:51,590 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-16 20:01:51,603 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-16 20:01:51,605 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-16 20:01:51,629 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 88 states have (on average 1.2272727272727273) internal successors, (108), 89 states have internal predecessors, (108), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-11-16 20:01:51,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-16 20:01:51,634 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:01:51,635 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:01:51,635 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:01:51,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:01:51,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1457384713, now seen corresponding path program 1 times [2021-11-16 20:01:51,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:01:51,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209664454] [2021-11-16 20:01:51,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:01:51,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:01:51,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:52,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:01:52,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:52,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-16 20:01:52,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:52,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 20:01:52,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:52,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-16 20:01:52,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:52,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-16 20:01:52,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:52,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-16 20:01:52,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:52,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-16 20:01:52,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:01:52,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209664454] [2021-11-16 20:01:52,158 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-16 20:01:52,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062395038] [2021-11-16 20:01:52,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:01:52,159 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:01:52,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:01:52,160 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) [2021-11-16 20:01:52,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-16 20:01:52,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:52,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 1924 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-16 20:01:52,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:01:52,619 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-16 20:01:52,620 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 20:01:52,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062395038] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:01:52,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:01:52,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-16 20:01:52,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625508288] [2021-11-16 20:01:52,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:01:52,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-16 20:01:52,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:01:52,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-16 20:01:52,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-16 20:01:52,677 INFO L87 Difference]: Start difference. First operand has 137 states, 88 states have (on average 1.2272727272727273) internal successors, (108), 89 states have internal predecessors, (108), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-16 20:01:52,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:01:52,703 INFO L93 Difference]: Finished difference Result 269 states and 367 transitions. [2021-11-16 20:01:52,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-16 20:01:52,706 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 54 [2021-11-16 20:01:52,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:01:52,717 INFO L225 Difference]: With dead ends: 269 [2021-11-16 20:01:52,717 INFO L226 Difference]: Without dead ends: 130 [2021-11-16 20:01:52,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-16 20:01:52,728 INFO L933 BasicCegarLoop]: 171 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, 171 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 [2021-11-16 20:01:52,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-16 20:01:52,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-11-16 20:01:52,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-11-16 20:01:52,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 81 states have (on average 1.1975308641975309) internal successors, (97), 83 states have internal predecessors, (97), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-11-16 20:01:52,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 163 transitions. [2021-11-16 20:01:52,777 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 163 transitions. Word has length 54 [2021-11-16 20:01:52,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:01:52,778 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 163 transitions. [2021-11-16 20:01:52,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-16 20:01:52,779 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 163 transitions. [2021-11-16 20:01:52,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-16 20:01:52,785 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:01:52,785 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:01:52,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-16 20:01:52,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-16 20:01:53,000 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:01:53,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:01:53,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1798443805, now seen corresponding path program 1 times [2021-11-16 20:01:53,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:01:53,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377903327] [2021-11-16 20:01:53,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:01:53,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:01:53,041 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 20:01:53,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1305858053] [2021-11-16 20:01:53,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:01:53,042 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:01:53,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:01:53,043 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) [2021-11-16 20:01:53,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-16 20:01:53,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:53,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 1952 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-16 20:01:53,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:01:53,526 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-16 20:01:53,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 20:01:53,715 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-16 20:01:53,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:01:53,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377903327] [2021-11-16 20:01:53,715 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 20:01:53,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305858053] [2021-11-16 20:01:53,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305858053] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-16 20:01:53,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-16 20:01:53,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 12 [2021-11-16 20:01:53,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312804610] [2021-11-16 20:01:53,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:01:53,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-16 20:01:53,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:01:53,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-16 20:01:53,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-11-16 20:01:53,718 INFO L87 Difference]: Start difference. First operand 130 states and 163 transitions. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-11-16 20:01:53,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:01:53,778 INFO L93 Difference]: Finished difference Result 138 states and 171 transitions. [2021-11-16 20:01:53,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-16 20:01:53,779 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 60 [2021-11-16 20:01:53,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:01:53,780 INFO L225 Difference]: With dead ends: 138 [2021-11-16 20:01:53,780 INFO L226 Difference]: Without dead ends: 136 [2021-11-16 20:01:53,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-16 20:01:53,781 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 6 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-16 20:01:53,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 629 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-16 20:01:53,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-11-16 20:01:53,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 135. [2021-11-16 20:01:53,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 84 states have (on average 1.1904761904761905) internal successors, (100), 87 states have internal predecessors, (100), 35 states have call successors, (35), 15 states have call predecessors, (35), 15 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2021-11-16 20:01:53,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 168 transitions. [2021-11-16 20:01:53,800 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 168 transitions. Word has length 60 [2021-11-16 20:01:53,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:01:53,800 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 168 transitions. [2021-11-16 20:01:53,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-11-16 20:01:53,801 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 168 transitions. [2021-11-16 20:01:53,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-16 20:01:53,808 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:01:53,808 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:01:53,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-16 20:01:54,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-16 20:01:54,009 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:01:54,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:01:54,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1800290847, now seen corresponding path program 1 times [2021-11-16 20:01:54,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:01:54,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343214517] [2021-11-16 20:01:54,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:01:54,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:01:54,054 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 20:01:54,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [637086089] [2021-11-16 20:01:54,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:01:54,054 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:01:54,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:01:54,055 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) [2021-11-16 20:01:54,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-16 20:01:54,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:54,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 1957 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-16 20:01:54,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:01:54,489 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-16 20:01:54,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 20:01:54,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:01:54,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343214517] [2021-11-16 20:01:54,490 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 20:01:54,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637086089] [2021-11-16 20:01:54,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637086089] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:01:54,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:01:54,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 20:01:54,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028513262] [2021-11-16 20:01:54,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:01:54,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 20:01:54,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:01:54,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 20:01:54,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 20:01:54,491 INFO L87 Difference]: Start difference. First operand 135 states and 168 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-16 20:01:54,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:01:54,510 INFO L93 Difference]: Finished difference Result 258 states and 318 transitions. [2021-11-16 20:01:54,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-16 20:01:54,510 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 60 [2021-11-16 20:01:54,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:01:54,512 INFO L225 Difference]: With dead ends: 258 [2021-11-16 20:01:54,512 INFO L226 Difference]: Without dead ends: 136 [2021-11-16 20:01:54,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-16 20:01:54,513 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 2 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-16 20:01:54,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 481 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-16 20:01:54,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-11-16 20:01:54,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2021-11-16 20:01:54,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 85 states have (on average 1.188235294117647) internal successors, (101), 88 states have internal predecessors, (101), 35 states have call successors, (35), 15 states have call predecessors, (35), 15 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2021-11-16 20:01:54,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 169 transitions. [2021-11-16 20:01:54,523 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 169 transitions. Word has length 60 [2021-11-16 20:01:54,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:01:54,523 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 169 transitions. [2021-11-16 20:01:54,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-16 20:01:54,523 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 169 transitions. [2021-11-16 20:01:54,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-16 20:01:54,524 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:01:54,524 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:01:54,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-16 20:01:54,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:01:54,739 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:01:54,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:01:54,739 INFO L85 PathProgramCache]: Analyzing trace with hash 169080727, now seen corresponding path program 1 times [2021-11-16 20:01:54,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:01:54,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005244531] [2021-11-16 20:01:54,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:01:54,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:01:54,767 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 20:01:54,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [924064885] [2021-11-16 20:01:54,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:01:54,768 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:01:54,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:01:54,768 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) [2021-11-16 20:01:54,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-16 20:01:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:01:55,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 1964 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-16 20:01:55,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:01:55,176 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-16 20:01:55,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 20:01:55,340 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-16 20:01:55,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:01:55,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005244531] [2021-11-16 20:01:55,340 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 20:01:55,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924064885] [2021-11-16 20:01:55,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924064885] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-16 20:01:55,340 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-16 20:01:55,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-16 20:01:55,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12305831] [2021-11-16 20:01:55,341 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-16 20:01:55,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-16 20:01:55,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:01:55,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-16 20:01:55,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-16 20:01:55,342 INFO L87 Difference]: Start difference. First operand 136 states and 169 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-16 20:01:55,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:01:55,394 INFO L93 Difference]: Finished difference Result 263 states and 325 transitions. [2021-11-16 20:01:55,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-16 20:01:55,395 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 61 [2021-11-16 20:01:55,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:01:55,396 INFO L225 Difference]: With dead ends: 263 [2021-11-16 20:01:55,396 INFO L226 Difference]: Without dead ends: 139 [2021-11-16 20:01:55,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-16 20:01:55,397 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 11 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-16 20:01:55,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 484 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-16 20:01:55,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-11-16 20:01:55,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2021-11-16 20:01:55,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 88 states have (on average 1.1818181818181819) internal successors, (104), 91 states have internal predecessors, (104), 35 states have call successors, (35), 15 states have call predecessors, (35), 15 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2021-11-16 20:01:55,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 172 transitions. [2021-11-16 20:01:55,413 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 172 transitions. Word has length 61 [2021-11-16 20:01:55,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:01:55,413 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 172 transitions. [2021-11-16 20:01:55,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-16 20:01:55,413 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 172 transitions. [2021-11-16 20:01:55,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-16 20:01:55,416 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:01:55,416 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:01:55,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-16 20:01:55,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:01:55,631 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:01:55,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:01:55,632 INFO L85 PathProgramCache]: Analyzing trace with hash -909385697, now seen corresponding path program 2 times [2021-11-16 20:01:55,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:01:55,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975550070] [2021-11-16 20:01:55,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:01:55,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:01:55,669 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 20:01:55,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1668943401] [2021-11-16 20:01:55,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-16 20:01:55,669 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:01:55,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:01:55,672 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) [2021-11-16 20:01:55,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-16 20:01:57,400 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-16 20:01:57,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-16 20:01:57,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 1985 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-16 20:01:57,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:01:57,605 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-16 20:01:57,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 20:01:57,886 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-16 20:01:57,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:01:57,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975550070] [2021-11-16 20:01:57,887 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 20:01:57,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668943401] [2021-11-16 20:01:57,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668943401] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-16 20:01:57,887 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-16 20:01:57,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-11-16 20:01:57,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443942113] [2021-11-16 20:01:57,887 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-16 20:01:57,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-16 20:01:57,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:01:57,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-16 20:01:57,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-11-16 20:01:57,888 INFO L87 Difference]: Start difference. First operand 139 states and 172 transitions. Second operand has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-16 20:01:58,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:01:58,394 INFO L93 Difference]: Finished difference Result 269 states and 334 transitions. [2021-11-16 20:01:58,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-16 20:01:58,399 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 64 [2021-11-16 20:01:58,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:01:58,400 INFO L225 Difference]: With dead ends: 269 [2021-11-16 20:01:58,400 INFO L226 Difference]: Without dead ends: 145 [2021-11-16 20:01:58,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=144, Invalid=236, Unknown=0, NotChecked=0, Total=380 [2021-11-16 20:01:58,402 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 24 mSDsluCounter, 1425 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1585 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-16 20:01:58,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 1585 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-16 20:01:58,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-16 20:01:58,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-11-16 20:01:58,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 94 states have (on average 1.1702127659574468) internal successors, (110), 97 states have internal predecessors, (110), 35 states have call successors, (35), 15 states have call predecessors, (35), 15 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2021-11-16 20:01:58,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 178 transitions. [2021-11-16 20:01:58,418 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 178 transitions. Word has length 64 [2021-11-16 20:01:58,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:01:58,420 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 178 transitions. [2021-11-16 20:01:58,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-16 20:01:58,420 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 178 transitions. [2021-11-16 20:01:58,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-16 20:01:58,421 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:01:58,421 INFO L514 BasicCegarLoop]: trace histogram [10, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:01:58,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-16 20:01:58,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:01:58,622 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:01:58,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:01:58,622 INFO L85 PathProgramCache]: Analyzing trace with hash -555602657, now seen corresponding path program 3 times [2021-11-16 20:01:58,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:01:58,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320753718] [2021-11-16 20:01:58,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:01:58,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:01:58,671 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 20:01:58,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1568621379] [2021-11-16 20:01:58,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-16 20:01:58,672 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:01:58,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:01:58,672 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) [2021-11-16 20:01:58,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-16 20:02:24,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-11-16 20:02:24,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-16 20:02:24,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 2027 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-16 20:02:24,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:02:24,596 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-16 20:02:24,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 20:02:25,047 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-16 20:02:25,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:02:25,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320753718] [2021-11-16 20:02:25,047 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 20:02:25,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568621379] [2021-11-16 20:02:25,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568621379] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-16 20:02:25,048 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-16 20:02:25,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2021-11-16 20:02:25,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782178325] [2021-11-16 20:02:25,048 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-16 20:02:25,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-16 20:02:25,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:02:25,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-16 20:02:25,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2021-11-16 20:02:25,050 INFO L87 Difference]: Start difference. First operand 145 states and 178 transitions. Second operand has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 26 states have internal predecessors, (58), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-16 20:02:29,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:02:29,681 INFO L93 Difference]: Finished difference Result 281 states and 352 transitions. [2021-11-16 20:02:29,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-16 20:02:29,682 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 26 states have internal predecessors, (58), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 70 [2021-11-16 20:02:29,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:02:29,683 INFO L225 Difference]: With dead ends: 281 [2021-11-16 20:02:29,687 INFO L226 Difference]: Without dead ends: 157 [2021-11-16 20:02:29,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=479, Invalid=853, Unknown=0, NotChecked=0, Total=1332 [2021-11-16 20:02:29,691 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 81 mSDsluCounter, 1922 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 2083 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-16 20:02:29,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 2083 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-16 20:02:29,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-11-16 20:02:29,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2021-11-16 20:02:29,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 106 states have (on average 1.150943396226415) internal successors, (122), 109 states have internal predecessors, (122), 35 states have call successors, (35), 15 states have call predecessors, (35), 15 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2021-11-16 20:02:29,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 190 transitions. [2021-11-16 20:02:29,700 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 190 transitions. Word has length 70 [2021-11-16 20:02:29,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:02:29,701 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 190 transitions. [2021-11-16 20:02:29,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 26 states have internal predecessors, (58), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-16 20:02:29,701 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 190 transitions. [2021-11-16 20:02:29,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-16 20:02:29,704 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:02:29,704 INFO L514 BasicCegarLoop]: trace histogram [22, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:02:29,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-16 20:02:29,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:02:29,916 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:02:29,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:02:29,916 INFO L85 PathProgramCache]: Analyzing trace with hash 408258335, now seen corresponding path program 4 times [2021-11-16 20:02:29,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:02:29,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501337944] [2021-11-16 20:02:29,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:02:29,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:02:29,982 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 20:02:29,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [206755177] [2021-11-16 20:02:29,982 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-16 20:02:29,982 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:02:29,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:02:29,996 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) [2021-11-16 20:02:29,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-16 20:02:31,659 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-16 20:02:31,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-16 20:02:31,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 2111 conjuncts, 88 conjunts are in the unsatisfiable core [2021-11-16 20:02:31,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:02:31,690 INFO L388 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 [2021-11-16 20:02:32,033 INFO L388 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 [2021-11-16 20:02:32,073 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-16 20:02:32,073 INFO L388 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 24 treesize of output 23 [2021-11-16 20:02:32,122 INFO L354 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2021-11-16 20:02:32,122 INFO L388 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 3 case distinctions, treesize of input 32 treesize of output 34 [2021-11-16 20:02:32,188 INFO L354 Elim1Store]: treesize reduction 114, result has 19.7 percent of original size [2021-11-16 20:02:32,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 41 treesize of output 46 [2021-11-16 20:02:32,259 INFO L354 Elim1Store]: treesize reduction 176, result has 17.4 percent of original size [2021-11-16 20:02:32,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 50 treesize of output 58 [2021-11-16 20:02:32,370 INFO L354 Elim1Store]: treesize reduction 250, result has 15.5 percent of original size [2021-11-16 20:02:32,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 59 treesize of output 70 [2021-11-16 20:02:32,485 INFO L354 Elim1Store]: treesize reduction 348, result has 13.6 percent of original size [2021-11-16 20:02:32,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 69 treesize of output 83 [2021-11-16 20:02:32,629 INFO L354 Elim1Store]: treesize reduction 434, result has 12.9 percent of original size [2021-11-16 20:02:32,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 77 treesize of output 94 [2021-11-16 20:02:32,800 INFO L354 Elim1Store]: treesize reduction 544, result has 11.8 percent of original size [2021-11-16 20:02:32,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 86 treesize of output 106 [2021-11-16 20:02:33,021 INFO L354 Elim1Store]: treesize reduction 666, result has 11.0 percent of original size [2021-11-16 20:02:33,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 103 treesize of output 126 [2021-11-16 20:02:33,304 INFO L354 Elim1Store]: treesize reduction 800, result has 10.2 percent of original size [2021-11-16 20:02:33,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 55 case distinctions, treesize of input 117 treesize of output 143 [2021-11-16 20:02:33,662 INFO L354 Elim1Store]: treesize reduction 946, result has 9.6 percent of original size [2021-11-16 20:02:33,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 66 case distinctions, treesize of input 131 treesize of output 160 [2021-11-16 20:02:34,181 INFO L354 Elim1Store]: treesize reduction 1104, result has 9.0 percent of original size [2021-11-16 20:02:34,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 78 case distinctions, treesize of input 145 treesize of output 177 [2021-11-16 20:02:35,194 INFO L354 Elim1Store]: treesize reduction 1274, result has 8.5 percent of original size [2021-11-16 20:02:35,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 91 case distinctions, treesize of input 154 treesize of output 189 [2021-11-16 20:02:48,337 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-16 20:02:48,337 INFO L388 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 [2021-11-16 20:02:49,686 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~b#1| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~a#1| Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| (* |aws_mul_size_checked_aws_mul_u64_checked_~b#1| |aws_mul_size_checked_aws_mul_u64_checked_~a#1|))))) is different from true [2021-11-16 20:02:49,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:02:49,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:02:49,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:02:49,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:02:49,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:02:49,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:02:49,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:02:49,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:02:49,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:02:49,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:02:49,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:02:49,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:02:49,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:02:49,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:02:49,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:02:49,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:02:49,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:02:49,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:02:49,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:02:49,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:02:49,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:02:49,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:02:49,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:02:49,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:02:49,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:02:49,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:02:49,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:02:49,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:02:49,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:02:49,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:02:49,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:02:49,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:02:49,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:02:49,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:02:49,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:02:49,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:02:50,044 INFO L354 Elim1Store]: treesize reduction 1108, result has 10.3 percent of original size [2021-11-16 20:02:50,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 36 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 105 case distinctions, treesize of input 245 treesize of output 205 [2021-11-16 20:02:57,385 INFO L354 Elim1Store]: treesize reduction 836, result has 7.0 percent of original size [2021-11-16 20:02:57,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 55 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 111 case distinctions, treesize of input 230 treesize of output 232 [2021-11-16 20:02:57,412 INFO L354 Elim1Store]: treesize reduction 608, result has 0.2 percent of original size [2021-11-16 20:02:57,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 15 select indices, 15 select index equivalence classes, 36 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 180 treesize of output 112 [2021-11-16 20:02:57,458 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 10 proven. 243 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-16 20:02:57,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 20:03:24,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:03:24,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501337944] [2021-11-16 20:03:24,047 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 20:03:24,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206755177] [2021-11-16 20:03:24,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206755177] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:03:24,047 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-16 20:03:24,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2021-11-16 20:03:24,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424945695] [2021-11-16 20:03:24,047 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-16 20:03:24,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-16 20:03:24,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:03:24,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-16 20:03:24,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1129, Unknown=21, NotChecked=68, Total=1332 [2021-11-16 20:03:24,048 INFO L87 Difference]: Start difference. First operand 157 states and 190 transitions. Second operand has 35 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 34 states have internal predecessors, (51), 5 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2021-11-16 20:03:26,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:03:26,904 INFO L93 Difference]: Finished difference Result 243 states and 297 transitions. [2021-11-16 20:03:26,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-16 20:03:26,905 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 34 states have internal predecessors, (51), 5 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 82 [2021-11-16 20:03:26,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:03:26,906 INFO L225 Difference]: With dead ends: 243 [2021-11-16 20:03:26,906 INFO L226 Difference]: Without dead ends: 184 [2021-11-16 20:03:26,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 44 SyntacticMatches, 12 SemanticMatches, 39 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 49.9s TimeCoverageRelationStatistics Valid=138, Invalid=1405, Unknown=21, NotChecked=76, Total=1640 [2021-11-16 20:03:26,907 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 79 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 777 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-16 20:03:26,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 562 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 232 Invalid, 0 Unknown, 777 Unchecked, 0.6s Time] [2021-11-16 20:03:26,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-11-16 20:03:26,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 172. [2021-11-16 20:03:26,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 118 states have (on average 1.152542372881356) internal successors, (136), 121 states have internal predecessors, (136), 35 states have call successors, (35), 17 states have call predecessors, (35), 18 states have return successors, (35), 33 states have call predecessors, (35), 33 states have call successors, (35) [2021-11-16 20:03:26,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 206 transitions. [2021-11-16 20:03:26,926 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 206 transitions. Word has length 82 [2021-11-16 20:03:26,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:03:26,926 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 206 transitions. [2021-11-16 20:03:26,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 34 states have internal predecessors, (51), 5 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2021-11-16 20:03:26,927 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 206 transitions. [2021-11-16 20:03:26,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-16 20:03:26,928 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:03:26,928 INFO L514 BasicCegarLoop]: trace histogram [22, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:03:26,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-16 20:03:27,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:03:27,141 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:03:27,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:03:27,142 INFO L85 PathProgramCache]: Analyzing trace with hash -113101833, now seen corresponding path program 1 times [2021-11-16 20:03:27,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:03:27,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250966154] [2021-11-16 20:03:27,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:03:27,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:03:27,191 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 20:03:27,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [421807321] [2021-11-16 20:03:27,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:03:27,192 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:03:27,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:03:27,199 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) [2021-11-16 20:03:27,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-16 20:03:27,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:03:27,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 2117 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-16 20:03:27,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:03:27,530 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2021-11-16 20:03:27,530 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 20:03:27,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:03:27,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250966154] [2021-11-16 20:03:27,531 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 20:03:27,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421807321] [2021-11-16 20:03:27,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421807321] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:03:27,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:03:27,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-16 20:03:27,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389924115] [2021-11-16 20:03:27,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:03:27,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-16 20:03:27,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:03:27,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-16 20:03:27,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-16 20:03:27,533 INFO L87 Difference]: Start difference. First operand 172 states and 206 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-16 20:03:27,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:03:27,556 INFO L93 Difference]: Finished difference Result 232 states and 279 transitions. [2021-11-16 20:03:27,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 20:03:27,560 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 85 [2021-11-16 20:03:27,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:03:27,563 INFO L225 Difference]: With dead ends: 232 [2021-11-16 20:03:27,563 INFO L226 Difference]: Without dead ends: 172 [2021-11-16 20:03:27,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-16 20:03:27,564 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 2 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-16 20:03:27,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 635 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-16 20:03:27,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-11-16 20:03:27,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2021-11-16 20:03:27,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 118 states have (on average 1.1440677966101696) internal successors, (135), 121 states have internal predecessors, (135), 35 states have call successors, (35), 17 states have call predecessors, (35), 18 states have return successors, (35), 33 states have call predecessors, (35), 33 states have call successors, (35) [2021-11-16 20:03:27,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 205 transitions. [2021-11-16 20:03:27,577 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 205 transitions. Word has length 85 [2021-11-16 20:03:27,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:03:27,578 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 205 transitions. [2021-11-16 20:03:27,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-16 20:03:27,578 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 205 transitions. [2021-11-16 20:03:27,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-16 20:03:27,580 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:03:27,580 INFO L514 BasicCegarLoop]: trace histogram [22, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:03:27,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-16 20:03:27,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-16 20:03:27,799 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:03:27,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:03:27,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1050955701, now seen corresponding path program 1 times [2021-11-16 20:03:27,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:03:27,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563324846] [2021-11-16 20:03:27,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:03:27,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:03:27,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:03:27,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:03:27,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:03:27,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-16 20:03:28,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:03:28,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 20:03:28,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:03:28,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-16 20:03:28,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:03:28,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-16 20:03:28,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:03:28,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-16 20:03:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:03:28,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-16 20:03:28,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:03:28,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-16 20:03:28,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:03:28,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:03:28,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:03:28,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:03:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:03:28,146 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2021-11-16 20:03:28,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:03:28,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563324846] [2021-11-16 20:03:28,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563324846] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:03:28,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:03:28,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-16 20:03:28,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993464617] [2021-11-16 20:03:28,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:03:28,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-16 20:03:28,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:03:28,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-16 20:03:28,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-16 20:03:28,149 INFO L87 Difference]: Start difference. First operand 172 states and 205 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (11), 6 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-16 20:03:29,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:03:29,282 INFO L93 Difference]: Finished difference Result 315 states and 378 transitions. [2021-11-16 20:03:29,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-16 20:03:29,282 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (11), 6 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 1 states have call successors, (10) Word has length 88 [2021-11-16 20:03:29,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:03:29,283 INFO L225 Difference]: With dead ends: 315 [2021-11-16 20:03:29,283 INFO L226 Difference]: Without dead ends: 198 [2021-11-16 20:03:29,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2021-11-16 20:03:29,284 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 112 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-16 20:03:29,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 796 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-16 20:03:29,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-11-16 20:03:29,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 171. [2021-11-16 20:03:29,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 117 states have (on average 1.1282051282051282) internal successors, (132), 120 states have internal predecessors, (132), 35 states have call successors, (35), 17 states have call predecessors, (35), 18 states have return successors, (35), 33 states have call predecessors, (35), 33 states have call successors, (35) [2021-11-16 20:03:29,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 202 transitions. [2021-11-16 20:03:29,294 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 202 transitions. Word has length 88 [2021-11-16 20:03:29,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:03:29,294 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 202 transitions. [2021-11-16 20:03:29,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (11), 6 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-16 20:03:29,295 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 202 transitions. [2021-11-16 20:03:29,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-16 20:03:29,295 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:03:29,295 INFO L514 BasicCegarLoop]: trace histogram [22, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:03:29,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-16 20:03:29,296 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:03:29,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:03:29,296 INFO L85 PathProgramCache]: Analyzing trace with hash 2100521803, now seen corresponding path program 1 times [2021-11-16 20:03:29,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:03:29,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810805938] [2021-11-16 20:03:29,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:03:29,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:03:29,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:03:29,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:03:29,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:03:29,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-16 20:03:29,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:03:29,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 20:03:29,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:03:29,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-16 20:03:29,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:03:29,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-16 20:03:29,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:03:29,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-16 20:03:29,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:03:29,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-16 20:03:29,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:03:29,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-16 20:03:29,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:03:29,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:03:29,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:03:29,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:03:29,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:03:29,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-16 20:03:29,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:03:29,557 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2021-11-16 20:03:29,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:03:29,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810805938] [2021-11-16 20:03:29,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810805938] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:03:29,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:03:29,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-16 20:03:29,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378551788] [2021-11-16 20:03:29,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:03:29,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-16 20:03:29,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:03:29,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-16 20:03:29,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-16 20:03:29,559 INFO L87 Difference]: Start difference. First operand 171 states and 202 transitions. Second operand has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2021-11-16 20:03:30,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:03:30,841 INFO L93 Difference]: Finished difference Result 208 states and 247 transitions. [2021-11-16 20:03:30,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-16 20:03:30,841 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (12), 6 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 91 [2021-11-16 20:03:30,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:03:30,843 INFO L225 Difference]: With dead ends: 208 [2021-11-16 20:03:30,843 INFO L226 Difference]: Without dead ends: 206 [2021-11-16 20:03:30,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2021-11-16 20:03:30,844 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 117 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-16 20:03:30,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 716 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-16 20:03:30,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-11-16 20:03:30,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 178. [2021-11-16 20:03:30,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 121 states have (on average 1.1239669421487604) internal successors, (136), 125 states have internal predecessors, (136), 36 states have call successors, (36), 18 states have call predecessors, (36), 20 states have return successors, (38), 34 states have call predecessors, (38), 34 states have call successors, (38) [2021-11-16 20:03:30,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 210 transitions. [2021-11-16 20:03:30,856 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 210 transitions. Word has length 91 [2021-11-16 20:03:30,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:03:30,857 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 210 transitions. [2021-11-16 20:03:30,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2021-11-16 20:03:30,857 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 210 transitions. [2021-11-16 20:03:30,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-16 20:03:30,858 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:03:30,858 INFO L514 BasicCegarLoop]: trace histogram [22, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:03:30,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-16 20:03:30,859 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:03:30,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:03:30,859 INFO L85 PathProgramCache]: Analyzing trace with hash -626383294, now seen corresponding path program 1 times [2021-11-16 20:03:30,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:03:30,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843094660] [2021-11-16 20:03:30,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:03:30,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:03:31,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:03:31,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:03:31,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:03:31,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-16 20:03:31,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:03:31,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 20:03:31,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:03:31,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-16 20:03:31,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:03:31,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-16 20:03:31,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:03:31,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-16 20:03:31,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:03:31,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-16 20:03:31,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:03:31,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-16 20:03:31,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:03:31,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:03:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:03:31,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:03:31,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:03:31,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-16 20:03:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:03:31,955 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-16 20:03:31,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:03:31,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843094660] [2021-11-16 20:03:31,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843094660] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:03:31,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841342786] [2021-11-16 20:03:31,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:03:31,956 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:03:31,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:03:31,957 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) [2021-11-16 20:03:31,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-16 20:03:32,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:03:32,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 2136 conjuncts, 91 conjunts are in the unsatisfiable core [2021-11-16 20:03:32,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:03:32,506 INFO L388 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 14 treesize of output 10 [2021-11-16 20:03:32,555 INFO L354 Elim1Store]: treesize reduction 32, result has 23.8 percent of original size [2021-11-16 20:03:32,555 INFO L388 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 25 treesize of output 24 [2021-11-16 20:03:32,619 INFO L354 Elim1Store]: treesize reduction 76, result has 21.6 percent of original size [2021-11-16 20:03:32,619 INFO L388 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 3 case distinctions, treesize of input 35 treesize of output 37 [2021-11-16 20:03:32,696 INFO L354 Elim1Store]: treesize reduction 135, result has 18.7 percent of original size [2021-11-16 20:03:32,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 45 treesize of output 50 [2021-11-16 20:03:32,802 INFO L354 Elim1Store]: treesize reduction 208, result has 16.5 percent of original size [2021-11-16 20:03:32,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 55 treesize of output 63 [2021-11-16 20:03:32,917 INFO L354 Elim1Store]: treesize reduction 295, result has 14.7 percent of original size [2021-11-16 20:03:32,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 65 treesize of output 76 [2021-11-16 20:03:33,055 INFO L354 Elim1Store]: treesize reduction 396, result has 13.3 percent of original size [2021-11-16 20:03:33,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 75 treesize of output 89 [2021-11-16 20:03:33,220 INFO L354 Elim1Store]: treesize reduction 511, result has 12.2 percent of original size [2021-11-16 20:03:33,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 85 treesize of output 102 [2021-11-16 20:03:33,427 INFO L354 Elim1Store]: treesize reduction 640, result has 11.2 percent of original size [2021-11-16 20:03:33,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 95 treesize of output 115 [2021-11-16 20:03:33,674 INFO L354 Elim1Store]: treesize reduction 783, result has 10.4 percent of original size [2021-11-16 20:03:33,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 105 treesize of output 128 [2021-11-16 20:03:33,975 INFO L354 Elim1Store]: treesize reduction 940, result has 9.7 percent of original size [2021-11-16 20:03:33,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 55 case distinctions, treesize of input 115 treesize of output 141 [2021-11-16 20:03:34,321 INFO L354 Elim1Store]: treesize reduction 1111, result has 9.1 percent of original size [2021-11-16 20:03:34,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 66 case distinctions, treesize of input 125 treesize of output 154 [2021-11-16 20:03:34,771 INFO L354 Elim1Store]: treesize reduction 1296, result has 8.5 percent of original size [2021-11-16 20:03:34,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 78 case distinctions, treesize of input 135 treesize of output 167 [2021-11-16 20:03:35,338 INFO L354 Elim1Store]: treesize reduction 1495, result has 8.1 percent of original size [2021-11-16 20:03:35,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 91 case distinctions, treesize of input 145 treesize of output 180 [2021-11-16 20:03:36,092 INFO L354 Elim1Store]: treesize reduction 1708, result has 7.6 percent of original size [2021-11-16 20:03:36,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 105 case distinctions, treesize of input 155 treesize of output 193 [2021-11-16 20:03:37,002 INFO L354 Elim1Store]: treesize reduction 1935, result has 7.2 percent of original size [2021-11-16 20:03:37,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 120 case distinctions, treesize of input 165 treesize of output 206 [2021-11-16 20:03:37,973 INFO L354 Elim1Store]: treesize reduction 2176, result has 6.9 percent of original size [2021-11-16 20:03:37,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 136 case distinctions, treesize of input 175 treesize of output 219 [2021-11-16 20:03:39,187 INFO L354 Elim1Store]: treesize reduction 2431, result has 6.6 percent of original size [2021-11-16 20:03:39,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 17 select indices, 17 select index equivalence classes, 0 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 153 case distinctions, treesize of input 185 treesize of output 232 [2021-11-16 20:03:40,657 INFO L354 Elim1Store]: treesize reduction 2700, result has 6.3 percent of original size [2021-11-16 20:03:40,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 18 select indices, 18 select index equivalence classes, 0 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 171 case distinctions, treesize of input 195 treesize of output 245 [2021-11-16 20:03:42,562 INFO L354 Elim1Store]: treesize reduction 2983, result has 6.0 percent of original size [2021-11-16 20:03:42,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 19 select indices, 19 select index equivalence classes, 0 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 190 case distinctions, treesize of input 205 treesize of output 258 [2021-11-16 20:03:45,478 INFO L354 Elim1Store]: treesize reduction 3280, result has 5.8 percent of original size [2021-11-16 20:03:45,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 20 select indices, 20 select index equivalence classes, 0 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 210 case distinctions, treesize of input 215 treesize of output 271 [2021-11-16 20:03:49,197 INFO L354 Elim1Store]: treesize reduction 3549, result has 5.6 percent of original size [2021-11-16 20:03:49,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 21 select indices, 21 select index equivalence classes, 0 disjoint index pairs (out of 210 index pairs), introduced 21 new quantified variables, introduced 231 case distinctions, treesize of input 230 treesize of output 289 [2021-11-16 20:04:05,149 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-16 20:04:05,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 20:04:07,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841342786] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:04:07,298 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-16 20:04:07,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 31] total 58 [2021-11-16 20:04:07,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043435024] [2021-11-16 20:04:07,299 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-16 20:04:07,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-11-16 20:04:07,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:04:07,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-11-16 20:04:07,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=3742, Unknown=1, NotChecked=0, Total=3906 [2021-11-16 20:04:07,301 INFO L87 Difference]: Start difference. First operand 178 states and 210 transitions. Second operand has 58 states, 58 states have (on average 1.6724137931034482) internal successors, (97), 53 states have internal predecessors, (97), 4 states have call successors, (17), 8 states have call predecessors, (17), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2021-11-16 20:04:49,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:04:49,537 INFO L93 Difference]: Finished difference Result 343 states and 411 transitions. [2021-11-16 20:04:49,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-16 20:04:49,538 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.6724137931034482) internal successors, (97), 53 states have internal predecessors, (97), 4 states have call successors, (17), 8 states have call predecessors, (17), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 91 [2021-11-16 20:04:49,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:04:49,539 INFO L225 Difference]: With dead ends: 343 [2021-11-16 20:04:49,539 INFO L226 Difference]: Without dead ends: 207 [2021-11-16 20:04:49,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 627 ImplicationChecksByTransitivity, 27.1s TimeCoverageRelationStatistics Valid=373, Invalid=7636, Unknown=1, NotChecked=0, Total=8010 [2021-11-16 20:04:49,541 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 216 mSDsluCounter, 4410 mSDsCounter, 0 mSdLazyCounter, 5092 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 4561 SdHoareTripleChecker+Invalid, 5976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 5092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 671 IncrementalHoareTripleChecker+Unchecked, 29.5s IncrementalHoareTripleChecker+Time [2021-11-16 20:04:49,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 4561 Invalid, 5976 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [213 Valid, 5092 Invalid, 0 Unknown, 671 Unchecked, 29.5s Time] [2021-11-16 20:04:49,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-11-16 20:04:49,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 179. [2021-11-16 20:04:49,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 122 states have (on average 1.1229508196721312) internal successors, (137), 126 states have internal predecessors, (137), 36 states have call successors, (36), 18 states have call predecessors, (36), 20 states have return successors, (38), 34 states have call predecessors, (38), 34 states have call successors, (38) [2021-11-16 20:04:49,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 211 transitions. [2021-11-16 20:04:49,553 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 211 transitions. Word has length 91 [2021-11-16 20:04:49,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:04:49,553 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 211 transitions. [2021-11-16 20:04:49,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.6724137931034482) internal successors, (97), 53 states have internal predecessors, (97), 4 states have call successors, (17), 8 states have call predecessors, (17), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2021-11-16 20:04:49,554 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 211 transitions. [2021-11-16 20:04:49,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-16 20:04:49,554 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:04:49,555 INFO L514 BasicCegarLoop]: trace histogram [23, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:04:49,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-16 20:04:49,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:04:49,767 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:04:49,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:04:49,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1760837174, now seen corresponding path program 2 times [2021-11-16 20:04:49,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:04:49,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858764966] [2021-11-16 20:04:49,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:04:49,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:04:49,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:04:49,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:04:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:04:49,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-16 20:04:49,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:04:49,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 20:04:49,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:04:49,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-16 20:04:49,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:04:49,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-16 20:04:49,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:04:49,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-16 20:04:49,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:04:49,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-16 20:04:49,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:04:50,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-16 20:04:50,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:04:50,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:04:50,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:04:51,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:04:51,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:04:51,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-16 20:04:51,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:04:51,046 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-16 20:04:51,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:04:51,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858764966] [2021-11-16 20:04:51,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858764966] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:04:51,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597569857] [2021-11-16 20:04:51,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-16 20:04:51,046 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:04:51,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:04:51,047 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) [2021-11-16 20:04:51,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-16 20:04:56,871 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-16 20:04:56,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-16 20:04:56,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 2143 conjuncts, 109 conjunts are in the unsatisfiable core [2021-11-16 20:04:56,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:04:57,022 INFO L388 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 14 treesize of output 10 [2021-11-16 20:04:57,102 INFO L354 Elim1Store]: treesize reduction 32, result has 23.8 percent of original size [2021-11-16 20:04:57,103 INFO L388 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 25 treesize of output 24 [2021-11-16 20:04:57,223 INFO L354 Elim1Store]: treesize reduction 76, result has 21.6 percent of original size [2021-11-16 20:04:57,223 INFO L388 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 3 case distinctions, treesize of input 35 treesize of output 37 [2021-11-16 20:04:57,424 INFO L354 Elim1Store]: treesize reduction 135, result has 18.7 percent of original size [2021-11-16 20:04:57,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 45 treesize of output 50 [2021-11-16 20:04:57,752 INFO L354 Elim1Store]: treesize reduction 208, result has 16.5 percent of original size [2021-11-16 20:04:57,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 55 treesize of output 63 [2021-11-16 20:04:58,550 INFO L354 Elim1Store]: treesize reduction 295, result has 14.7 percent of original size [2021-11-16 20:04:58,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 65 treesize of output 76 [2021-11-16 20:04:59,688 INFO L354 Elim1Store]: treesize reduction 396, result has 13.3 percent of original size [2021-11-16 20:04:59,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 75 treesize of output 89 [2021-11-16 20:05:00,996 INFO L354 Elim1Store]: treesize reduction 511, result has 12.2 percent of original size [2021-11-16 20:05:00,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 85 treesize of output 102 [2021-11-16 20:05:02,791 INFO L354 Elim1Store]: treesize reduction 640, result has 11.2 percent of original size [2021-11-16 20:05:02,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 95 treesize of output 115 [2021-11-16 20:05:04,892 INFO L354 Elim1Store]: treesize reduction 783, result has 10.4 percent of original size [2021-11-16 20:05:04,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 105 treesize of output 128 [2021-11-16 20:05:07,418 INFO L354 Elim1Store]: treesize reduction 940, result has 9.7 percent of original size [2021-11-16 20:05:07,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 55 case distinctions, treesize of input 115 treesize of output 141 [2021-11-16 20:05:10,241 INFO L354 Elim1Store]: treesize reduction 1111, result has 9.1 percent of original size [2021-11-16 20:05:10,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 66 case distinctions, treesize of input 125 treesize of output 154 [2021-11-16 20:05:13,816 INFO L354 Elim1Store]: treesize reduction 1296, result has 8.5 percent of original size [2021-11-16 20:05:13,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 78 case distinctions, treesize of input 135 treesize of output 167 [2021-11-16 20:05:18,191 INFO L354 Elim1Store]: treesize reduction 1495, result has 8.1 percent of original size [2021-11-16 20:05:18,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 91 case distinctions, treesize of input 145 treesize of output 180 [2021-11-16 20:05:22,721 INFO L354 Elim1Store]: treesize reduction 1708, result has 7.6 percent of original size [2021-11-16 20:05:22,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 105 case distinctions, treesize of input 155 treesize of output 193 [2021-11-16 20:05:27,529 INFO L354 Elim1Store]: treesize reduction 1935, result has 7.2 percent of original size [2021-11-16 20:05:27,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 120 case distinctions, treesize of input 165 treesize of output 206 [2021-11-16 20:05:33,863 INFO L354 Elim1Store]: treesize reduction 2176, result has 6.9 percent of original size [2021-11-16 20:05:33,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 136 case distinctions, treesize of input 175 treesize of output 219 [2021-11-16 20:05:40,434 INFO L354 Elim1Store]: treesize reduction 2431, result has 6.6 percent of original size [2021-11-16 20:05:40,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 17 select indices, 17 select index equivalence classes, 0 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 153 case distinctions, treesize of input 185 treesize of output 232 [2021-11-16 20:05:47,416 INFO L354 Elim1Store]: treesize reduction 2700, result has 6.3 percent of original size [2021-11-16 20:05:47,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 18 select indices, 18 select index equivalence classes, 0 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 171 case distinctions, treesize of input 195 treesize of output 245 [2021-11-16 20:05:56,536 WARN L227 SmtUtils]: Spent 5.21s on a formula simplification. DAG size of input: 883 DAG size of output: 101 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-16 20:05:56,536 INFO L354 Elim1Store]: treesize reduction 2983, result has 6.0 percent of original size [2021-11-16 20:05:56,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 19 select indices, 19 select index equivalence classes, 0 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 190 case distinctions, treesize of input 205 treesize of output 258 [2021-11-16 20:06:05,533 INFO L354 Elim1Store]: treesize reduction 3280, result has 5.8 percent of original size [2021-11-16 20:06:05,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 20 select indices, 20 select index equivalence classes, 0 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 210 case distinctions, treesize of input 215 treesize of output 271 [2021-11-16 20:06:16,817 WARN L227 SmtUtils]: Spent 6.73s on a formula simplification. DAG size of input: 1059 DAG size of output: 111 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-16 20:06:16,817 INFO L354 Elim1Store]: treesize reduction 3591, result has 5.5 percent of original size [2021-11-16 20:06:16,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 21 select indices, 21 select index equivalence classes, 0 disjoint index pairs (out of 210 index pairs), introduced 21 new quantified variables, introduced 231 case distinctions, treesize of input 225 treesize of output 284 [2021-11-16 20:06:29,006 WARN L227 SmtUtils]: Spent 7.30s on a formula simplification. DAG size of input: 1152 DAG size of output: 116 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-16 20:06:29,007 INFO L354 Elim1Store]: treesize reduction 3872, result has 5.4 percent of original size [2021-11-16 20:06:29,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 22 select indices, 22 select index equivalence classes, 0 disjoint index pairs (out of 231 index pairs), introduced 22 new quantified variables, introduced 253 case distinctions, treesize of input 240 treesize of output 302 [2021-11-16 20:06:43,995 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-16 20:06:43,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 20:06:48,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597569857] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:06:48,704 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-16 20:06:48,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 34] total 62 [2021-11-16 20:06:48,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027296890] [2021-11-16 20:06:48,705 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-16 20:06:48,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2021-11-16 20:06:48,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:06:48,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-11-16 20:06:48,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=4248, Unknown=0, NotChecked=0, Total=4422 [2021-11-16 20:06:48,707 INFO L87 Difference]: Start difference. First operand 179 states and 211 transitions. Second operand has 62 states, 61 states have (on average 1.6721311475409837) internal successors, (102), 57 states have internal predecessors, (102), 6 states have call successors, (23), 8 states have call predecessors, (23), 5 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2021-11-16 20:08:46,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:08:46,355 INFO L93 Difference]: Finished difference Result 344 states and 412 transitions. [2021-11-16 20:08:46,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-16 20:08:46,355 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 1.6721311475409837) internal successors, (102), 57 states have internal predecessors, (102), 6 states have call successors, (23), 8 states have call predecessors, (23), 5 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 92 [2021-11-16 20:08:46,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:08:46,356 INFO L225 Difference]: With dead ends: 344 [2021-11-16 20:08:46,356 INFO L226 Difference]: Without dead ends: 208 [2021-11-16 20:08:46,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 108.0s TimeCoverageRelationStatistics Valid=396, Invalid=8724, Unknown=0, NotChecked=0, Total=9120 [2021-11-16 20:08:46,358 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 253 mSDsluCounter, 2330 mSDsCounter, 0 mSdLazyCounter, 4150 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 2476 SdHoareTripleChecker+Invalid, 4952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 4150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 549 IncrementalHoareTripleChecker+Unchecked, 60.9s IncrementalHoareTripleChecker+Time [2021-11-16 20:08:46,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 2476 Invalid, 4952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 4150 Invalid, 0 Unknown, 549 Unchecked, 60.9s Time] [2021-11-16 20:08:46,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-11-16 20:08:46,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 180. [2021-11-16 20:08:46,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 123 states have (on average 1.1219512195121952) internal successors, (138), 127 states have internal predecessors, (138), 36 states have call successors, (36), 18 states have call predecessors, (36), 20 states have return successors, (38), 34 states have call predecessors, (38), 34 states have call successors, (38) [2021-11-16 20:08:46,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 212 transitions. [2021-11-16 20:08:46,368 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 212 transitions. Word has length 92 [2021-11-16 20:08:46,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:08:46,368 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 212 transitions. [2021-11-16 20:08:46,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 1.6721311475409837) internal successors, (102), 57 states have internal predecessors, (102), 6 states have call successors, (23), 8 states have call predecessors, (23), 5 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2021-11-16 20:08:46,369 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 212 transitions. [2021-11-16 20:08:46,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-16 20:08:46,369 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:08:46,369 INFO L514 BasicCegarLoop]: trace histogram [24, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:08:46,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-16 20:08:46,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-16 20:08:46,587 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:08:46,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:08:46,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1725798210, now seen corresponding path program 3 times [2021-11-16 20:08:46,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:08:46,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310339419] [2021-11-16 20:08:46,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:08:46,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:08:46,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:08:46,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:08:46,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:08:46,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-16 20:08:46,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:08:46,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 20:08:46,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:08:46,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-16 20:08:46,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:08:46,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-16 20:08:46,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:08:46,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-16 20:08:46,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:08:46,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-16 20:08:46,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:08:47,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-16 20:08:47,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:08:47,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:08:47,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:08:47,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:08:47,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:08:47,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-16 20:08:47,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:08:47,952 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-16 20:08:47,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:08:47,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310339419] [2021-11-16 20:08:47,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310339419] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:08:47,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023743886] [2021-11-16 20:08:47,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-16 20:08:47,953 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:08:47,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:08:47,963 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) [2021-11-16 20:08:47,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-16 20:13:45,355 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2021-11-16 20:13:45,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-16 20:13:45,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 2150 conjuncts, 91 conjunts are in the unsatisfiable core [2021-11-16 20:13:45,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:13:45,714 INFO L388 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 14 treesize of output 10 [2021-11-16 20:13:45,828 INFO L354 Elim1Store]: treesize reduction 32, result has 23.8 percent of original size [2021-11-16 20:13:45,828 INFO L388 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 25 treesize of output 24 [2021-11-16 20:13:46,052 INFO L354 Elim1Store]: treesize reduction 72, result has 22.6 percent of original size [2021-11-16 20:13:46,052 INFO L388 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 3 case distinctions, treesize of input 45 treesize of output 47 [2021-11-16 20:13:46,221 INFO L354 Elim1Store]: treesize reduction 124, result has 19.5 percent of original size [2021-11-16 20:13:46,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 59 treesize of output 64 [2021-11-16 20:13:46,438 INFO L354 Elim1Store]: treesize reduction 188, result has 17.2 percent of original size [2021-11-16 20:13:46,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 73 treesize of output 81 [2021-11-16 20:13:46,701 INFO L354 Elim1Store]: treesize reduction 264, result has 15.4 percent of original size [2021-11-16 20:13:46,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 87 treesize of output 98 [2021-11-16 20:13:47,039 INFO L354 Elim1Store]: treesize reduction 352, result has 13.9 percent of original size [2021-11-16 20:13:47,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 101 treesize of output 115 [2021-11-16 20:13:51,457 INFO L354 Elim1Store]: treesize reduction 452, result has 12.7 percent of original size [2021-11-16 20:13:51,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 115 treesize of output 132 [2021-11-16 20:13:57,980 INFO L354 Elim1Store]: treesize reduction 564, result has 11.7 percent of original size [2021-11-16 20:13:57,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 129 treesize of output 149 [2021-11-16 20:14:04,592 INFO L354 Elim1Store]: treesize reduction 688, result has 10.9 percent of original size [2021-11-16 20:14:04,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 143 treesize of output 166 [2021-11-16 20:14:13,371 INFO L354 Elim1Store]: treesize reduction 824, result has 10.1 percent of original size [2021-11-16 20:14:13,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 55 case distinctions, treesize of input 157 treesize of output 183 [2021-11-16 20:14:26,417 INFO L354 Elim1Store]: treesize reduction 972, result has 9.5 percent of original size [2021-11-16 20:14:26,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 66 case distinctions, treesize of input 171 treesize of output 200 [2021-11-16 20:14:42,309 INFO L354 Elim1Store]: treesize reduction 1132, result has 8.9 percent of original size [2021-11-16 20:14:42,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 78 case distinctions, treesize of input 185 treesize of output 217 [2021-11-16 20:15:00,990 INFO L354 Elim1Store]: treesize reduction 1330, result has 8.3 percent of original size [2021-11-16 20:15:00,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 91 case distinctions, treesize of input 195 treesize of output 230 [2021-11-16 20:15:23,464 INFO L354 Elim1Store]: treesize reduction 1532, result has 7.8 percent of original size [2021-11-16 20:15:23,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 105 case distinctions, treesize of input 205 treesize of output 243 [2021-11-16 20:15:47,633 INFO L354 Elim1Store]: treesize reduction 1748, result has 7.4 percent of original size [2021-11-16 20:15:47,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 120 case distinctions, treesize of input 215 treesize of output 256 Killed by 15