./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fcb8e130 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_priority_queue_remove_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 1ebada516f0ccae5e55b91f6e0fe5802f70171054dc79c047f46877ad506c65e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-fcb8e13 [2021-11-22 20:35:09,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 20:35:09,996 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 20:35:10,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 20:35:10,040 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 20:35:10,043 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 20:35:10,044 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 20:35:10,047 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 20:35:10,049 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 20:35:10,053 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 20:35:10,054 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 20:35:10,055 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 20:35:10,055 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 20:35:10,058 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 20:35:10,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 20:35:10,062 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 20:35:10,064 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 20:35:10,064 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 20:35:10,067 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 20:35:10,072 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 20:35:10,074 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 20:35:10,075 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 20:35:10,076 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 20:35:10,077 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 20:35:10,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 20:35:10,083 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 20:35:10,084 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 20:35:10,085 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 20:35:10,086 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 20:35:10,087 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 20:35:10,087 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 20:35:10,088 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 20:35:10,090 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 20:35:10,091 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 20:35:10,092 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 20:35:10,092 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 20:35:10,093 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 20:35:10,093 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 20:35:10,093 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 20:35:10,094 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 20:35:10,095 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 20:35:10,096 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-22 20:35:10,128 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 20:35:10,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 20:35:10,129 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 20:35:10,129 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 20:35:10,131 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 20:35:10,131 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 20:35:10,131 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 20:35:10,131 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 20:35:10,131 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 20:35:10,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 20:35:10,131 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 20:35:10,131 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 20:35:10,131 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 20:35:10,132 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 20:35:10,132 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 20:35:10,132 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 20:35:10,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 20:35:10,132 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 20:35:10,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 20:35:10,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 20:35:10,132 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 20:35:10,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 20:35:10,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 20:35:10,133 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 20:35:10,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 20:35:10,133 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 20:35:10,133 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 20:35:10,133 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 20:35:10,133 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 20:35:10,133 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ebada516f0ccae5e55b91f6e0fe5802f70171054dc79c047f46877ad506c65e [2021-11-22 20:35:10,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 20:35:10,422 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 20:35:10,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 20:35:10,426 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 20:35:10,427 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 20:35:10,428 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i [2021-11-22 20:35:10,507 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/882a4a8ba/ddb7cc4216634b26aa1acd93918af9fb/FLAG0ced9636e [2021-11-22 20:35:11,254 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 20:35:11,255 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i [2021-11-22 20:35:11,293 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/882a4a8ba/ddb7cc4216634b26aa1acd93918af9fb/FLAG0ced9636e [2021-11-22 20:35:11,316 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/882a4a8ba/ddb7cc4216634b26aa1acd93918af9fb [2021-11-22 20:35:11,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 20:35:11,321 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 20:35:11,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 20:35:11,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 20:35:11,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 20:35:11,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:35:11" (1/1) ... [2021-11-22 20:35:11,331 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1af4ddfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:35:11, skipping insertion in model container [2021-11-22 20:35:11,331 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:35:11" (1/1) ... [2021-11-22 20:35:11,337 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 20:35:11,434 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 20:35:11,661 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_priority_queue_remove_harness.i[4499,4512] [2021-11-22 20:35:11,668 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_priority_queue_remove_harness.i[4559,4572] [2021-11-22 20:35:12,334 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:12,334 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:12,335 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:12,335 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:12,336 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:12,348 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:12,349 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:12,350 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:12,351 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:12,352 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:12,353 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:12,354 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:12,354 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:12,582 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-22 20:35:12,583 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-22 20:35:12,584 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-22 20:35:12,585 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-22 20:35:12,586 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-22 20:35:12,587 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-22 20:35:12,587 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-22 20:35:12,588 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-22 20:35:12,588 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-22 20:35:12,589 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-22 20:35:12,748 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-22 20:35:12,809 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:12,814 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:12,879 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:12,880 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:12,880 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:12,880 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:12,881 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:12,881 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:12,882 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:12,882 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:12,882 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:12,883 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:12,883 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:12,883 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:12,884 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:12,887 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:12,888 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:12,888 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:12,888 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:12,891 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:12,892 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:12,906 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:12,907 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:12,907 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:12,924 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:12,924 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:12,924 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:12,931 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 20:35:12,971 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 20:35:12,985 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_priority_queue_remove_harness.i[4499,4512] [2021-11-22 20:35:12,985 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_priority_queue_remove_harness.i[4559,4572] [2021-11-22 20:35:13,018 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:13,023 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:13,024 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:13,025 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:13,025 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:13,030 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:13,032 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:13,034 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:13,034 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:13,035 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:13,035 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:13,036 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:13,036 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:13,084 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-22 20:35:13,085 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-22 20:35:13,086 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-22 20:35:13,086 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-22 20:35:13,089 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-22 20:35:13,090 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-22 20:35:13,090 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-22 20:35:13,091 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-22 20:35:13,091 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-22 20:35:13,092 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-22 20:35:13,127 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-22 20:35:13,139 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:13,149 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:13,177 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:13,179 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:13,180 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:13,180 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:13,181 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:13,181 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:13,182 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:13,182 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:13,182 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:13,182 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:13,183 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:13,183 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:13,184 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:13,186 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:13,186 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:13,186 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:13,187 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:13,189 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:13,191 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:13,196 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:13,197 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:13,197 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:13,206 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:13,206 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:13,206 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:35:13,209 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 20:35:13,432 INFO L208 MainTranslator]: Completed translation [2021-11-22 20:35:13,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:35:13 WrapperNode [2021-11-22 20:35:13,448 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 20:35:13,449 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 20:35:13,449 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 20:35:13,449 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 20:35:13,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:35:13" (1/1) ... [2021-11-22 20:35:13,556 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:35:13" (1/1) ... [2021-11-22 20:35:13,943 INFO L137 Inliner]: procedures = 697, calls = 1921, calls flagged for inlining = 792, calls inlined = 1310, statements flattened = 17651 [2021-11-22 20:35:13,944 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 20:35:13,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 20:35:13,945 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 20:35:13,945 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 20:35:13,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:35:13" (1/1) ... [2021-11-22 20:35:13,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:35:13" (1/1) ... [2021-11-22 20:35:14,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:35:13" (1/1) ... [2021-11-22 20:35:14,043 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:35:13" (1/1) ... [2021-11-22 20:35:14,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:35:13" (1/1) ... [2021-11-22 20:35:14,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:35:13" (1/1) ... [2021-11-22 20:35:14,396 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:35:13" (1/1) ... [2021-11-22 20:35:14,464 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 20:35:14,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 20:35:14,465 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 20:35:14,465 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 20:35:14,466 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:35:13" (1/1) ... [2021-11-22 20:35:14,472 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 20:35:14,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:35:14,494 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) [2021-11-22 20:35:14,510 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 [2021-11-22 20:35:14,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 20:35:14,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-22 20:35:14,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 20:35:14,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 20:35:14,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 20:35:14,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 20:35:14,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 20:35:14,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 20:35:14,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-22 20:35:14,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 20:35:14,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 20:35:14,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-22 20:35:14,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 20:35:14,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 20:35:14,811 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 20:35:14,820 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 20:35:22,102 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 20:35:22,134 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 20:35:22,134 INFO L301 CfgBuilder]: Removed 44 assume(true) statements. [2021-11-22 20:35:22,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:35:22 BoogieIcfgContainer [2021-11-22 20:35:22,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 20:35:22,144 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 20:35:22,144 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 20:35:22,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 20:35:22,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 08:35:11" (1/3) ... [2021-11-22 20:35:22,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15bea190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:35:22, skipping insertion in model container [2021-11-22 20:35:22,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:35:13" (2/3) ... [2021-11-22 20:35:22,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15bea190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:35:22, skipping insertion in model container [2021-11-22 20:35:22,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:35:22" (3/3) ... [2021-11-22 20:35:22,158 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_remove_harness.i [2021-11-22 20:35:22,163 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 20:35:22,163 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 87 error locations. [2021-11-22 20:35:22,217 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 20:35:22,223 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 [2021-11-22 20:35:22,223 INFO L340 AbstractCegarLoop]: Starting to check reachability of 87 error locations. [2021-11-22 20:35:22,291 INFO L276 IsEmpty]: Start isEmpty. Operand has 3360 states, 3272 states have (on average 1.4220660146699267) internal successors, (4653), 3359 states have internal predecessors, (4653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:35:22,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-22 20:35:22,300 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:35:22,301 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:35:22,302 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr84ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-22 20:35:22,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:35:22,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1452582775, now seen corresponding path program 1 times [2021-11-22 20:35:22,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:35:22,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687335691] [2021-11-22 20:35:22,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:35:22,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:35:22,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:35:22,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:35:22,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:35:22,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687335691] [2021-11-22 20:35:22,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687335691] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:35:22,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:35:22,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 20:35:22,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101169015] [2021-11-22 20:35:22,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:35:22,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 20:35:22,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:35:22,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 20:35:22,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 20:35:22,852 INFO L87 Difference]: Start difference. First operand has 3360 states, 3272 states have (on average 1.4220660146699267) internal successors, (4653), 3359 states have internal predecessors, (4653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:35:23,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:35:23,062 INFO L93 Difference]: Finished difference Result 6713 states and 9298 transitions. [2021-11-22 20:35:23,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 20:35:23,065 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-22 20:35:23,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:35:23,095 INFO L225 Difference]: With dead ends: 6713 [2021-11-22 20:35:23,096 INFO L226 Difference]: Without dead ends: 3354 [2021-11-22 20:35:23,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 20:35:23,116 INFO L933 BasicCegarLoop]: 4338 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, 4338 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 [2021-11-22 20:35:23,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 4338 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 20:35:23,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3354 states. [2021-11-22 20:35:23,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3354 to 3354. [2021-11-22 20:35:23,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3354 states, 3267 states have (on average 1.3262932353841446) internal successors, (4333), 3353 states have internal predecessors, (4333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:35:23,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3354 states to 3354 states and 4333 transitions. [2021-11-22 20:35:23,278 INFO L78 Accepts]: Start accepts. Automaton has 3354 states and 4333 transitions. Word has length 59 [2021-11-22 20:35:23,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:35:23,279 INFO L470 AbstractCegarLoop]: Abstraction has 3354 states and 4333 transitions. [2021-11-22 20:35:23,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:35:23,280 INFO L276 IsEmpty]: Start isEmpty. Operand 3354 states and 4333 transitions. [2021-11-22 20:35:23,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-22 20:35:23,289 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:35:23,289 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:35:23,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 20:35:23,290 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-22 20:35:23,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:35:23,294 INFO L85 PathProgramCache]: Analyzing trace with hash -770244477, now seen corresponding path program 1 times [2021-11-22 20:35:23,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:35:23,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904738695] [2021-11-22 20:35:23,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:35:23,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:35:23,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:35:23,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:35:23,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:35:23,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904738695] [2021-11-22 20:35:23,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904738695] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:35:23,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:35:23,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 20:35:23,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888211514] [2021-11-22 20:35:23,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:35:23,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 20:35:23,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:35:23,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 20:35:23,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 20:35:23,574 INFO L87 Difference]: Start difference. First operand 3354 states and 4333 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:35:24,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:35:24,470 INFO L93 Difference]: Finished difference Result 6640 states and 8575 transitions. [2021-11-22 20:35:24,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 20:35:24,471 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-22 20:35:24,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:35:24,485 INFO L225 Difference]: With dead ends: 6640 [2021-11-22 20:35:24,485 INFO L226 Difference]: Without dead ends: 3366 [2021-11-22 20:35:24,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 20:35:24,492 INFO L933 BasicCegarLoop]: 4310 mSDtfsCounter, 4651 mSDsluCounter, 3945 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4651 SdHoareTripleChecker+Valid, 8255 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-22 20:35:24,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4651 Valid, 8255 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-22 20:35:24,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3366 states. [2021-11-22 20:35:24,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3366 to 3354. [2021-11-22 20:35:24,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3354 states, 3267 states have (on average 1.3253749617385981) internal successors, (4330), 3353 states have internal predecessors, (4330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:35:24,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3354 states to 3354 states and 4330 transitions. [2021-11-22 20:35:24,579 INFO L78 Accepts]: Start accepts. Automaton has 3354 states and 4330 transitions. Word has length 63 [2021-11-22 20:35:24,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:35:24,580 INFO L470 AbstractCegarLoop]: Abstraction has 3354 states and 4330 transitions. [2021-11-22 20:35:24,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:35:24,580 INFO L276 IsEmpty]: Start isEmpty. Operand 3354 states and 4330 transitions. [2021-11-22 20:35:24,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-22 20:35:24,582 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:35:24,582 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:35:24,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 20:35:24,582 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-22 20:35:24,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:35:24,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1371716571, now seen corresponding path program 1 times [2021-11-22 20:35:24,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:35:24,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324702514] [2021-11-22 20:35:24,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:35:24,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:35:24,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:35:24,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:35:24,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:35:24,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324702514] [2021-11-22 20:35:24,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324702514] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:35:24,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:35:24,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 20:35:24,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308171580] [2021-11-22 20:35:24,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:35:24,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 20:35:24,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:35:24,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 20:35:24,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 20:35:24,854 INFO L87 Difference]: Start difference. First operand 3354 states and 4330 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:35:27,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:35:27,857 INFO L93 Difference]: Finished difference Result 9065 states and 11606 transitions. [2021-11-22 20:35:27,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 20:35:27,858 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-22 20:35:27,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:35:27,879 INFO L225 Difference]: With dead ends: 9065 [2021-11-22 20:35:27,879 INFO L226 Difference]: Without dead ends: 5759 [2021-11-22 20:35:27,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-22 20:35:27,891 INFO L933 BasicCegarLoop]: 4289 mSDtfsCounter, 10606 mSDsluCounter, 7118 mSDsCounter, 0 mSdLazyCounter, 1184 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10606 SdHoareTripleChecker+Valid, 11407 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-22 20:35:27,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10606 Valid, 11407 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1184 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-22 20:35:27,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5759 states. [2021-11-22 20:35:28,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5759 to 3354. [2021-11-22 20:35:28,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3354 states, 3267 states have (on average 1.3244566880930517) internal successors, (4327), 3353 states have internal predecessors, (4327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:35:28,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3354 states to 3354 states and 4327 transitions. [2021-11-22 20:35:28,015 INFO L78 Accepts]: Start accepts. Automaton has 3354 states and 4327 transitions. Word has length 71 [2021-11-22 20:35:28,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:35:28,015 INFO L470 AbstractCegarLoop]: Abstraction has 3354 states and 4327 transitions. [2021-11-22 20:35:28,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:35:28,016 INFO L276 IsEmpty]: Start isEmpty. Operand 3354 states and 4327 transitions. [2021-11-22 20:35:28,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-22 20:35:28,018 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:35:28,018 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:35:28,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 20:35:28,019 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-22 20:35:28,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:35:28,019 INFO L85 PathProgramCache]: Analyzing trace with hash 443045741, now seen corresponding path program 1 times [2021-11-22 20:35:28,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:35:28,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239608078] [2021-11-22 20:35:28,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:35:28,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:35:28,121 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:35:28,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [96510049] [2021-11-22 20:35:28,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:35:28,122 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:35:28,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:35:28,127 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) [2021-11-22 20:35:28,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 20:35:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:35:28,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 2579 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-22 20:35:28,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:35:29,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:35:29,016 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:35:29,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:35:29,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239608078] [2021-11-22 20:35:29,017 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:35:29,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96510049] [2021-11-22 20:35:29,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96510049] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:35:29,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:35:29,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 20:35:29,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901479770] [2021-11-22 20:35:29,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:35:29,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 20:35:29,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:35:29,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 20:35:29,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 20:35:29,021 INFO L87 Difference]: Start difference. First operand 3354 states and 4327 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:35:31,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:35:31,068 INFO L93 Difference]: Finished difference Result 9223 states and 11833 transitions. [2021-11-22 20:35:31,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 20:35:31,070 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-22 20:35:31,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:35:31,093 INFO L225 Difference]: With dead ends: 9223 [2021-11-22 20:35:31,093 INFO L226 Difference]: Without dead ends: 5948 [2021-11-22 20:35:31,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-22 20:35:31,103 INFO L933 BasicCegarLoop]: 4135 mSDtfsCounter, 19066 mSDsluCounter, 7549 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19066 SdHoareTripleChecker+Valid, 11684 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-22 20:35:31,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19066 Valid, 11684 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-22 20:35:31,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5948 states. [2021-11-22 20:35:31,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5948 to 3354. [2021-11-22 20:35:31,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3354 states, 3267 states have (on average 1.3235384144475053) internal successors, (4324), 3353 states have internal predecessors, (4324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:35:31,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3354 states to 3354 states and 4324 transitions. [2021-11-22 20:35:31,249 INFO L78 Accepts]: Start accepts. Automaton has 3354 states and 4324 transitions. Word has length 87 [2021-11-22 20:35:31,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:35:31,250 INFO L470 AbstractCegarLoop]: Abstraction has 3354 states and 4324 transitions. [2021-11-22 20:35:31,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:35:31,250 INFO L276 IsEmpty]: Start isEmpty. Operand 3354 states and 4324 transitions. [2021-11-22 20:35:31,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-22 20:35:31,251 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:35:31,251 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:35:31,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 20:35:31,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:35:31,476 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-22 20:35:31,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:35:31,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1546095369, now seen corresponding path program 1 times [2021-11-22 20:35:31,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:35:31,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147914910] [2021-11-22 20:35:31,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:35:31,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:35:31,569 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:35:31,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1755320608] [2021-11-22 20:35:31,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:35:31,573 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:35:31,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:35:31,575 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) [2021-11-22 20:35:31,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 20:35:32,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:35:32,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 2684 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 20:35:32,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:35:32,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:35:32,354 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:35:32,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:35:32,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147914910] [2021-11-22 20:35:32,354 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:35:32,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755320608] [2021-11-22 20:35:32,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755320608] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:35:32,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:35:32,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 20:35:32,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745828835] [2021-11-22 20:35:32,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:35:32,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 20:35:32,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:35:32,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 20:35:32,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 20:35:32,357 INFO L87 Difference]: Start difference. First operand 3354 states and 4324 transitions. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:35:35,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:35:35,249 INFO L93 Difference]: Finished difference Result 13772 states and 17522 transitions. [2021-11-22 20:35:35,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 20:35:35,250 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2021-11-22 20:35:35,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:35:35,291 INFO L225 Difference]: With dead ends: 13772 [2021-11-22 20:35:35,291 INFO L226 Difference]: Without dead ends: 10481 [2021-11-22 20:35:35,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-22 20:35:35,302 INFO L933 BasicCegarLoop]: 4262 mSDtfsCounter, 23139 mSDsluCounter, 13644 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23139 SdHoareTripleChecker+Valid, 17906 SdHoareTripleChecker+Invalid, 1359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-22 20:35:35,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23139 Valid, 17906 Invalid, 1359 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 1289 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-22 20:35:35,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10481 states. [2021-11-22 20:35:35,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10481 to 3354. [2021-11-22 20:35:35,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3354 states, 3267 states have (on average 1.3226201408019589) internal successors, (4321), 3353 states have internal predecessors, (4321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:35:35,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3354 states to 3354 states and 4321 transitions. [2021-11-22 20:35:35,484 INFO L78 Accepts]: Start accepts. Automaton has 3354 states and 4321 transitions. Word has length 111 [2021-11-22 20:35:35,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:35:35,487 INFO L470 AbstractCegarLoop]: Abstraction has 3354 states and 4321 transitions. [2021-11-22 20:35:35,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:35:35,487 INFO L276 IsEmpty]: Start isEmpty. Operand 3354 states and 4321 transitions. [2021-11-22 20:35:35,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-22 20:35:35,488 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:35:35,489 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:35:35,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 20:35:35,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:35:35,703 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-22 20:35:35,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:35:35,704 INFO L85 PathProgramCache]: Analyzing trace with hash 2145325249, now seen corresponding path program 1 times [2021-11-22 20:35:35,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:35:35,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302366341] [2021-11-22 20:35:35,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:35:35,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:35:35,792 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:35:35,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2073913038] [2021-11-22 20:35:35,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:35:35,793 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:35:35,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:35:35,794 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) [2021-11-22 20:35:35,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 20:35:36,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:35:36,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 2914 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-22 20:35:36,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:35:36,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:35:36,815 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:35:36,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:35:36,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302366341] [2021-11-22 20:35:36,815 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:35:36,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073913038] [2021-11-22 20:35:36,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073913038] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:35:36,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:35:36,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 20:35:36,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565146546] [2021-11-22 20:35:36,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:35:36,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 20:35:36,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:35:36,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 20:35:36,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 20:35:36,817 INFO L87 Difference]: Start difference. First operand 3354 states and 4321 transitions. Second operand has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:35:39,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:35:39,853 INFO L93 Difference]: Finished difference Result 6583 states and 8483 transitions. [2021-11-22 20:35:39,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 20:35:39,854 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2021-11-22 20:35:39,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:35:39,870 INFO L225 Difference]: With dead ends: 6583 [2021-11-22 20:35:39,870 INFO L226 Difference]: Without dead ends: 3423 [2021-11-22 20:35:39,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-22 20:35:39,878 INFO L933 BasicCegarLoop]: 4139 mSDtfsCounter, 13264 mSDsluCounter, 7255 mSDsCounter, 0 mSdLazyCounter, 1497 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13264 SdHoareTripleChecker+Valid, 11394 SdHoareTripleChecker+Invalid, 1503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-22 20:35:39,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13264 Valid, 11394 Invalid, 1503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1497 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-22 20:35:39,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3423 states. [2021-11-22 20:35:40,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3423 to 3354. [2021-11-22 20:35:40,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3354 states, 3267 states have (on average 1.3220079583715947) internal successors, (4319), 3353 states have internal predecessors, (4319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:35:40,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3354 states to 3354 states and 4319 transitions. [2021-11-22 20:35:40,018 INFO L78 Accepts]: Start accepts. Automaton has 3354 states and 4319 transitions. Word has length 127 [2021-11-22 20:35:40,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:35:40,019 INFO L470 AbstractCegarLoop]: Abstraction has 3354 states and 4319 transitions. [2021-11-22 20:35:40,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:35:40,019 INFO L276 IsEmpty]: Start isEmpty. Operand 3354 states and 4319 transitions. [2021-11-22 20:35:40,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-22 20:35:40,021 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:35:40,021 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:35:40,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-22 20:35:40,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:35:40,239 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-22 20:35:40,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:35:40,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1862402935, now seen corresponding path program 1 times [2021-11-22 20:35:40,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:35:40,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656500814] [2021-11-22 20:35:40,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:35:40,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:35:40,339 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:35:40,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [925693493] [2021-11-22 20:35:40,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:35:40,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:35:40,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:35:40,341 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) [2021-11-22 20:35:40,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-22 20:35:40,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:35:40,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 3144 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-22 20:35:40,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:35:41,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:35:41,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:35:41,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:35:41,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656500814] [2021-11-22 20:35:41,331 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:35:41,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925693493] [2021-11-22 20:35:41,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925693493] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:35:41,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:35:41,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 20:35:41,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544715026] [2021-11-22 20:35:41,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:35:41,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 20:35:41,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:35:41,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 20:35:41,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 20:35:41,334 INFO L87 Difference]: Start difference. First operand 3354 states and 4319 transitions. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:35:49,982 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:35:52,989 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:35:55,574 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:35:57,917 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:35:58,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:35:58,151 INFO L93 Difference]: Finished difference Result 9444 states and 12126 transitions. [2021-11-22 20:35:58,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 20:35:58,152 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2021-11-22 20:35:58,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:35:58,166 INFO L225 Difference]: With dead ends: 9444 [2021-11-22 20:35:58,166 INFO L226 Difference]: Without dead ends: 6159 [2021-11-22 20:35:58,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-22 20:35:58,174 INFO L933 BasicCegarLoop]: 6700 mSDtfsCounter, 3416 mSDsluCounter, 21412 mSDsCounter, 0 mSdLazyCounter, 6365 mSolverCounterSat, 148 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3416 SdHoareTripleChecker+Valid, 28112 SdHoareTripleChecker+Invalid, 6515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 6365 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2021-11-22 20:35:58,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3416 Valid, 28112 Invalid, 6515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 6365 Invalid, 2 Unknown, 0 Unchecked, 16.3s Time] [2021-11-22 20:35:58,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6159 states. [2021-11-22 20:35:58,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6159 to 3430. [2021-11-22 20:35:58,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3430 states, 3343 states have (on average 1.3203709243194734) internal successors, (4414), 3429 states have internal predecessors, (4414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:35:58,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3430 states to 3430 states and 4414 transitions. [2021-11-22 20:35:58,337 INFO L78 Accepts]: Start accepts. Automaton has 3430 states and 4414 transitions. Word has length 143 [2021-11-22 20:35:58,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:35:58,338 INFO L470 AbstractCegarLoop]: Abstraction has 3430 states and 4414 transitions. [2021-11-22 20:35:58,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:35:58,339 INFO L276 IsEmpty]: Start isEmpty. Operand 3430 states and 4414 transitions. [2021-11-22 20:35:58,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-22 20:35:58,341 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:35:58,341 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:35:58,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-22 20:35:58,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:35:58,567 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-22 20:35:58,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:35:58,568 INFO L85 PathProgramCache]: Analyzing trace with hash -968916597, now seen corresponding path program 1 times [2021-11-22 20:35:58,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:35:58,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400086923] [2021-11-22 20:35:58,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:35:58,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:35:58,673 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:35:58,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1331819666] [2021-11-22 20:35:58,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:35:58,673 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:35:58,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:35:58,675 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) [2021-11-22 20:35:58,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-22 20:35:59,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:35:59,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 3141 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 20:35:59,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:35:59,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:35:59,459 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:35:59,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:35:59,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400086923] [2021-11-22 20:35:59,459 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:35:59,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331819666] [2021-11-22 20:35:59,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331819666] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:35:59,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:35:59,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 20:35:59,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429204788] [2021-11-22 20:35:59,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:35:59,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 20:35:59,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:35:59,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 20:35:59,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 20:35:59,461 INFO L87 Difference]: Start difference. First operand 3430 states and 4414 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:35:59,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:35:59,969 INFO L93 Difference]: Finished difference Result 6861 states and 8829 transitions. [2021-11-22 20:35:59,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 20:35:59,970 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2021-11-22 20:35:59,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:35:59,978 INFO L225 Difference]: With dead ends: 6861 [2021-11-22 20:35:59,978 INFO L226 Difference]: Without dead ends: 3506 [2021-11-22 20:35:59,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 20:35:59,984 INFO L933 BasicCegarLoop]: 4277 mSDtfsCounter, 52 mSDsluCounter, 8429 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 12706 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 20:35:59,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 12706 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 20:35:59,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3506 states. [2021-11-22 20:36:00,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3506 to 3468. [2021-11-22 20:36:00,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3468 states, 3381 states have (on average 1.3167701863354038) internal successors, (4452), 3467 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:36:00,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3468 states to 3468 states and 4452 transitions. [2021-11-22 20:36:00,115 INFO L78 Accepts]: Start accepts. Automaton has 3468 states and 4452 transitions. Word has length 143 [2021-11-22 20:36:00,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:36:00,116 INFO L470 AbstractCegarLoop]: Abstraction has 3468 states and 4452 transitions. [2021-11-22 20:36:00,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:36:00,116 INFO L276 IsEmpty]: Start isEmpty. Operand 3468 states and 4452 transitions. [2021-11-22 20:36:00,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-22 20:36:00,117 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:36:00,118 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:36:00,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-22 20:36:00,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:36:00,343 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-22 20:36:00,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:36:00,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1866309875, now seen corresponding path program 1 times [2021-11-22 20:36:00,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:36:00,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238809153] [2021-11-22 20:36:00,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:36:00,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:36:00,423 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:36:00,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1220280409] [2021-11-22 20:36:00,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:36:00,424 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:36:00,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:36:00,425 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) [2021-11-22 20:36:00,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-22 20:36:01,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:36:01,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 3136 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-22 20:36:01,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:36:01,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:36:01,427 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:36:01,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:36:01,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238809153] [2021-11-22 20:36:01,431 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:36:01,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220280409] [2021-11-22 20:36:01,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220280409] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:36:01,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:36:01,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 20:36:01,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374294399] [2021-11-22 20:36:01,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:36:01,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 20:36:01,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:36:01,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 20:36:01,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 20:36:01,434 INFO L87 Difference]: Start difference. First operand 3468 states and 4452 transitions. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:36:02,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:36:02,021 INFO L93 Difference]: Finished difference Result 10102 states and 12977 transitions. [2021-11-22 20:36:02,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 20:36:02,022 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2021-11-22 20:36:02,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:36:02,038 INFO L225 Difference]: With dead ends: 10102 [2021-11-22 20:36:02,038 INFO L226 Difference]: Without dead ends: 6817 [2021-11-22 20:36:02,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-22 20:36:02,047 INFO L933 BasicCegarLoop]: 4311 mSDtfsCounter, 8312 mSDsluCounter, 17243 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8312 SdHoareTripleChecker+Valid, 21554 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 20:36:02,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8312 Valid, 21554 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 20:36:02,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6817 states. [2021-11-22 20:36:02,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6817 to 3529. [2021-11-22 20:36:02,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3529 states, 3442 states have (on average 1.3158047646717026) internal successors, (4529), 3528 states have internal predecessors, (4529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:36:02,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3529 states to 3529 states and 4529 transitions. [2021-11-22 20:36:02,211 INFO L78 Accepts]: Start accepts. Automaton has 3529 states and 4529 transitions. Word has length 143 [2021-11-22 20:36:02,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:36:02,212 INFO L470 AbstractCegarLoop]: Abstraction has 3529 states and 4529 transitions. [2021-11-22 20:36:02,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:36:02,212 INFO L276 IsEmpty]: Start isEmpty. Operand 3529 states and 4529 transitions. [2021-11-22 20:36:02,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-22 20:36:02,214 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:36:02,214 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:36:02,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-22 20:36:02,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:36:02,428 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-22 20:36:02,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:36:02,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1584651919, now seen corresponding path program 1 times [2021-11-22 20:36:02,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:36:02,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079400008] [2021-11-22 20:36:02,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:36:02,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:36:02,549 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:36:02,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2146304080] [2021-11-22 20:36:02,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:36:02,549 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:36:02,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:36:02,552 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) [2021-11-22 20:36:02,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-22 20:36:03,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:36:03,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 3133 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-22 20:36:03,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:36:03,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:36:03,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:36:03,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:36:03,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079400008] [2021-11-22 20:36:03,490 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:36:03,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146304080] [2021-11-22 20:36:03,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146304080] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:36:03,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:36:03,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 20:36:03,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464288829] [2021-11-22 20:36:03,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:36:03,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 20:36:03,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:36:03,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 20:36:03,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 20:36:03,492 INFO L87 Difference]: Start difference. First operand 3529 states and 4529 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:36:04,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:36:04,482 INFO L93 Difference]: Finished difference Result 6814 states and 8751 transitions. [2021-11-22 20:36:04,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 20:36:04,483 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2021-11-22 20:36:04,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:36:04,491 INFO L225 Difference]: With dead ends: 6814 [2021-11-22 20:36:04,491 INFO L226 Difference]: Without dead ends: 3468 [2021-11-22 20:36:04,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 20:36:04,498 INFO L933 BasicCegarLoop]: 4318 mSDtfsCounter, 1 mSDsluCounter, 8266 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 12584 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-22 20:36:04,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 12584 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-22 20:36:04,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3468 states. [2021-11-22 20:36:04,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3468 to 3468. [2021-11-22 20:36:04,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3468 states, 3381 states have (on average 1.316474415853298) internal successors, (4451), 3467 states have internal predecessors, (4451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:36:04,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3468 states to 3468 states and 4451 transitions. [2021-11-22 20:36:04,634 INFO L78 Accepts]: Start accepts. Automaton has 3468 states and 4451 transitions. Word has length 143 [2021-11-22 20:36:04,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:36:04,634 INFO L470 AbstractCegarLoop]: Abstraction has 3468 states and 4451 transitions. [2021-11-22 20:36:04,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:36:04,635 INFO L276 IsEmpty]: Start isEmpty. Operand 3468 states and 4451 transitions. [2021-11-22 20:36:04,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-22 20:36:04,636 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:36:04,636 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:36:04,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-22 20:36:04,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:36:04,852 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-22 20:36:04,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:36:04,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1893375477, now seen corresponding path program 1 times [2021-11-22 20:36:04,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:36:04,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912217827] [2021-11-22 20:36:04,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:36:04,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:36:04,953 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:36:04,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1081290692] [2021-11-22 20:36:04,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:36:04,954 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:36:04,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:36:04,956 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) [2021-11-22 20:36:04,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-22 20:36:05,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:36:05,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 3139 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-22 20:36:05,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:36:05,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:36:05,876 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:36:05,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:36:05,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912217827] [2021-11-22 20:36:05,877 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:36:05,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081290692] [2021-11-22 20:36:05,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081290692] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:36:05,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:36:05,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 20:36:05,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862482802] [2021-11-22 20:36:05,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:36:05,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 20:36:05,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:36:05,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 20:36:05,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 20:36:05,879 INFO L87 Difference]: Start difference. First operand 3468 states and 4451 transitions. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:36:07,547 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 20:36:10,073 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 20:36:11,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:36:11,143 INFO L93 Difference]: Finished difference Result 10210 states and 13113 transitions. [2021-11-22 20:36:11,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 20:36:11,144 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2021-11-22 20:36:11,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:36:11,158 INFO L225 Difference]: With dead ends: 10210 [2021-11-22 20:36:11,158 INFO L226 Difference]: Without dead ends: 6825 [2021-11-22 20:36:11,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-22 20:36:11,166 INFO L933 BasicCegarLoop]: 4309 mSDtfsCounter, 4225 mSDsluCounter, 17215 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4225 SdHoareTripleChecker+Valid, 21524 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-22 20:36:11,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4225 Valid, 21524 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-11-22 20:36:11,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6825 states. [2021-11-22 20:36:11,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6825 to 3468. [2021-11-22 20:36:11,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3468 states, 3381 states have (on average 1.316178645371192) internal successors, (4450), 3467 states have internal predecessors, (4450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:36:11,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3468 states to 3468 states and 4450 transitions. [2021-11-22 20:36:11,326 INFO L78 Accepts]: Start accepts. Automaton has 3468 states and 4450 transitions. Word has length 143 [2021-11-22 20:36:11,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:36:11,326 INFO L470 AbstractCegarLoop]: Abstraction has 3468 states and 4450 transitions. [2021-11-22 20:36:11,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:36:11,326 INFO L276 IsEmpty]: Start isEmpty. Operand 3468 states and 4450 transitions. [2021-11-22 20:36:11,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-22 20:36:11,328 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:36:11,328 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:36:11,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-22 20:36:11,531 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,SelfDestructingSolverStorable10 [2021-11-22 20:36:11,532 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-22 20:36:11,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:36:11,532 INFO L85 PathProgramCache]: Analyzing trace with hash -49809485, now seen corresponding path program 1 times [2021-11-22 20:36:11,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:36:11,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053325410] [2021-11-22 20:36:11,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:36:11,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:36:11,602 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:36:11,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1327077424] [2021-11-22 20:36:11,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:36:11,603 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:36:11,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:36:11,604 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) [2021-11-22 20:36:11,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-22 20:36:12,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:36:12,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 3165 conjuncts, 44 conjunts are in the unsatisfiable core [2021-11-22 20:36:12,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:36:12,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:36:12,475 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:36:12,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:36:12,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053325410] [2021-11-22 20:36:12,475 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:36:12,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327077424] [2021-11-22 20:36:12,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327077424] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:36:12,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:36:12,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 20:36:12,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166038146] [2021-11-22 20:36:12,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:36:12,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 20:36:12,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:36:12,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 20:36:12,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 20:36:12,476 INFO L87 Difference]: Start difference. First operand 3468 states and 4450 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:36:13,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:36:13,093 INFO L93 Difference]: Finished difference Result 9853 states and 12602 transitions. [2021-11-22 20:36:13,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 20:36:13,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2021-11-22 20:36:13,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:36:13,105 INFO L225 Difference]: With dead ends: 9853 [2021-11-22 20:36:13,105 INFO L226 Difference]: Without dead ends: 6469 [2021-11-22 20:36:13,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-22 20:36:13,114 INFO L933 BasicCegarLoop]: 7938 mSDtfsCounter, 3846 mSDsluCounter, 19655 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3846 SdHoareTripleChecker+Valid, 27593 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 20:36:13,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3846 Valid, 27593 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 20:36:13,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6469 states. [2021-11-22 20:36:13,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6469 to 3620. [2021-11-22 20:36:13,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3620 states, 3533 states have (on average 1.3133314463628645) internal successors, (4640), 3619 states have internal predecessors, (4640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:36:13,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3620 states to 3620 states and 4640 transitions. [2021-11-22 20:36:13,345 INFO L78 Accepts]: Start accepts. Automaton has 3620 states and 4640 transitions. Word has length 146 [2021-11-22 20:36:13,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:36:13,345 INFO L470 AbstractCegarLoop]: Abstraction has 3620 states and 4640 transitions. [2021-11-22 20:36:13,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:36:13,345 INFO L276 IsEmpty]: Start isEmpty. Operand 3620 states and 4640 transitions. [2021-11-22 20:36:13,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-22 20:36:13,347 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:36:13,347 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:36:13,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-22 20:36:13,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:36:13,560 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-22 20:36:13,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:36:13,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1807992689, now seen corresponding path program 1 times [2021-11-22 20:36:13,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:36:13,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758528312] [2021-11-22 20:36:13,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:36:13,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:36:13,635 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:36:13,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [914990521] [2021-11-22 20:36:13,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:36:13,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:36:13,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:36:13,637 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) [2021-11-22 20:36:13,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-22 20:36:14,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:36:14,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 3162 conjuncts, 46 conjunts are in the unsatisfiable core [2021-11-22 20:36:14,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:36:14,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:36:14,733 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:36:14,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:36:14,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758528312] [2021-11-22 20:36:14,733 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:36:14,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914990521] [2021-11-22 20:36:14,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914990521] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:36:14,734 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:36:14,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-22 20:36:14,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245022807] [2021-11-22 20:36:14,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:36:14,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-22 20:36:14,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:36:14,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-22 20:36:14,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-22 20:36:14,735 INFO L87 Difference]: Start difference. First operand 3620 states and 4640 transitions. Second operand has 14 states, 14 states have (on average 10.428571428571429) internal successors, (146), 14 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:36:22,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:36:22,942 INFO L93 Difference]: Finished difference Result 10783 states and 13809 transitions. [2021-11-22 20:36:22,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-22 20:36:22,942 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.428571428571429) internal successors, (146), 14 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2021-11-22 20:36:22,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:36:22,949 INFO L225 Difference]: With dead ends: 10783 [2021-11-22 20:36:22,950 INFO L226 Difference]: Without dead ends: 7266 [2021-11-22 20:36:22,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=620, Unknown=0, NotChecked=0, Total=756 [2021-11-22 20:36:22,955 INFO L933 BasicCegarLoop]: 8520 mSDtfsCounter, 25223 mSDsluCounter, 66828 mSDsCounter, 0 mSdLazyCounter, 2209 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25223 SdHoareTripleChecker+Valid, 75348 SdHoareTripleChecker+Invalid, 2367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 2209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-11-22 20:36:22,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25223 Valid, 75348 Invalid, 2367 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [158 Valid, 2209 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2021-11-22 20:36:22,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7266 states. [2021-11-22 20:36:23,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7266 to 3620. [2021-11-22 20:36:23,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3620 states, 3533 states have (on average 1.3130484007925276) internal successors, (4639), 3619 states have internal predecessors, (4639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:36:23,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3620 states to 3620 states and 4639 transitions. [2021-11-22 20:36:23,187 INFO L78 Accepts]: Start accepts. Automaton has 3620 states and 4639 transitions. Word has length 146 [2021-11-22 20:36:23,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:36:23,187 INFO L470 AbstractCegarLoop]: Abstraction has 3620 states and 4639 transitions. [2021-11-22 20:36:23,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.428571428571429) internal successors, (146), 14 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:36:23,188 INFO L276 IsEmpty]: Start isEmpty. Operand 3620 states and 4639 transitions. [2021-11-22 20:36:23,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-22 20:36:23,189 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:36:23,189 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:36:23,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-22 20:36:23,403 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,SelfDestructingSolverStorable12 [2021-11-22 20:36:23,404 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-22 20:36:23,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:36:23,404 INFO L85 PathProgramCache]: Analyzing trace with hash 159175011, now seen corresponding path program 1 times [2021-11-22 20:36:23,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:36:23,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617426422] [2021-11-22 20:36:23,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:36:23,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:36:23,481 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:36:23,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [49782968] [2021-11-22 20:36:23,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:36:23,481 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:36:23,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:36:23,483 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) [2021-11-22 20:36:23,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-22 20:36:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:36:24,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 3188 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-22 20:36:24,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:36:24,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:36:24,675 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:36:24,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:36:24,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617426422] [2021-11-22 20:36:24,675 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:36:24,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49782968] [2021-11-22 20:36:24,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49782968] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:36:24,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:36:24,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-22 20:36:24,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496361969] [2021-11-22 20:36:24,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:36:24,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 20:36:24,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:36:24,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 20:36:24,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-22 20:36:24,677 INFO L87 Difference]: Start difference. First operand 3620 states and 4639 transitions. Second operand has 9 states, 9 states have (on average 16.555555555555557) internal successors, (149), 9 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:36:39,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:36:39,404 INFO L93 Difference]: Finished difference Result 16828 states and 21340 transitions. [2021-11-22 20:36:39,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-22 20:36:39,405 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.555555555555557) internal successors, (149), 9 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2021-11-22 20:36:39,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:36:39,423 INFO L225 Difference]: With dead ends: 16828 [2021-11-22 20:36:39,423 INFO L226 Difference]: Without dead ends: 13281 [2021-11-22 20:36:39,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-22 20:36:39,432 INFO L933 BasicCegarLoop]: 6684 mSDtfsCounter, 26582 mSDsluCounter, 29034 mSDsCounter, 0 mSdLazyCounter, 6824 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26582 SdHoareTripleChecker+Valid, 35718 SdHoareTripleChecker+Invalid, 6948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 6824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2021-11-22 20:36:39,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26582 Valid, 35718 Invalid, 6948 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [124 Valid, 6824 Invalid, 0 Unknown, 0 Unchecked, 13.7s Time] [2021-11-22 20:36:39,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13281 states. [2021-11-22 20:36:39,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13281 to 3665. [2021-11-22 20:36:39,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3665 states, 3578 states have (on average 1.3124650642817217) internal successors, (4696), 3664 states have internal predecessors, (4696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:36:39,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3665 states to 3665 states and 4696 transitions. [2021-11-22 20:36:39,669 INFO L78 Accepts]: Start accepts. Automaton has 3665 states and 4696 transitions. Word has length 149 [2021-11-22 20:36:39,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:36:39,669 INFO L470 AbstractCegarLoop]: Abstraction has 3665 states and 4696 transitions. [2021-11-22 20:36:39,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.555555555555557) internal successors, (149), 9 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:36:39,669 INFO L276 IsEmpty]: Start isEmpty. Operand 3665 states and 4696 transitions. [2021-11-22 20:36:39,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-22 20:36:39,671 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:36:39,671 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:36:39,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-22 20:36:39,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-22 20:36:39,888 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-22 20:36:39,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:36:39,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1346239199, now seen corresponding path program 1 times [2021-11-22 20:36:39,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:36:39,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732422917] [2021-11-22 20:36:39,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:36:39,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:36:39,984 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:36:39,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1636521634] [2021-11-22 20:36:39,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:36:39,985 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:36:39,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:36:39,986 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:36:39,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-22 20:36:40,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:36:40,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 3198 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 20:36:40,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:36:41,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:36:41,002 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:36:41,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:36:41,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732422917] [2021-11-22 20:36:41,002 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:36:41,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636521634] [2021-11-22 20:36:41,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636521634] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:36:41,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:36:41,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 20:36:41,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764644851] [2021-11-22 20:36:41,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:36:41,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 20:36:41,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:36:41,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 20:36:41,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 20:36:41,004 INFO L87 Difference]: Start difference. First operand 3665 states and 4696 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:36:41,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:36:41,422 INFO L93 Difference]: Finished difference Result 7178 states and 9179 transitions. [2021-11-22 20:36:41,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 20:36:41,423 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2021-11-22 20:36:41,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:36:41,428 INFO L225 Difference]: With dead ends: 7178 [2021-11-22 20:36:41,428 INFO L226 Difference]: Without dead ends: 3605 [2021-11-22 20:36:41,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 20:36:41,432 INFO L933 BasicCegarLoop]: 4306 mSDtfsCounter, 40 mSDsluCounter, 8423 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 12729 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 20:36:41,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 12729 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 20:36:41,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3605 states. [2021-11-22 20:36:41,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3605 to 3577. [2021-11-22 20:36:41,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3577 states, 3490 states have (on average 1.3031518624641834) internal successors, (4548), 3576 states have internal predecessors, (4548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:36:41,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3577 states to 3577 states and 4548 transitions. [2021-11-22 20:36:41,612 INFO L78 Accepts]: Start accepts. Automaton has 3577 states and 4548 transitions. Word has length 149 [2021-11-22 20:36:41,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:36:41,612 INFO L470 AbstractCegarLoop]: Abstraction has 3577 states and 4548 transitions. [2021-11-22 20:36:41,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:36:41,613 INFO L276 IsEmpty]: Start isEmpty. Operand 3577 states and 4548 transitions. [2021-11-22 20:36:41,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-22 20:36:41,614 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:36:41,614 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:36:41,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-22 20:36:41,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-22 20:36:41,828 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-22 20:36:41,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:36:41,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1506550367, now seen corresponding path program 1 times [2021-11-22 20:36:41,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:36:41,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814139109] [2021-11-22 20:36:41,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:36:41,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:36:41,905 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:36:41,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1333458245] [2021-11-22 20:36:41,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:36:41,906 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:36:41,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:36:41,907 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:36:41,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-22 20:36:42,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:36:42,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 3178 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 20:36:42,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:36:42,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:36:42,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:36:42,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:36:42,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814139109] [2021-11-22 20:36:42,838 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:36:42,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333458245] [2021-11-22 20:36:42,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333458245] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:36:42,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:36:42,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 20:36:42,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928248359] [2021-11-22 20:36:42,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:36:42,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 20:36:42,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:36:42,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 20:36:42,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 20:36:42,840 INFO L87 Difference]: Start difference. First operand 3577 states and 4548 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:36:45,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:36:45,498 INFO L93 Difference]: Finished difference Result 7752 states and 9942 transitions. [2021-11-22 20:36:45,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 20:36:45,499 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2021-11-22 20:36:45,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:36:45,503 INFO L225 Difference]: With dead ends: 7752 [2021-11-22 20:36:45,503 INFO L226 Difference]: Without dead ends: 4222 [2021-11-22 20:36:45,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 20:36:45,506 INFO L933 BasicCegarLoop]: 4769 mSDtfsCounter, 969 mSDsluCounter, 6784 mSDsCounter, 0 mSdLazyCounter, 1965 mSolverCounterSat, 525 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 11553 SdHoareTripleChecker+Invalid, 2490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 1965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-22 20:36:45,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [969 Valid, 11553 Invalid, 2490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [525 Valid, 1965 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-22 20:36:45,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4222 states. [2021-11-22 20:36:45,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4222 to 3835. [2021-11-22 20:36:45,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3835 states, 3748 states have (on average 1.2814834578441836) internal successors, (4803), 3834 states have internal predecessors, (4803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:36:45,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3835 states to 3835 states and 4803 transitions. [2021-11-22 20:36:45,649 INFO L78 Accepts]: Start accepts. Automaton has 3835 states and 4803 transitions. Word has length 149 [2021-11-22 20:36:45,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:36:45,650 INFO L470 AbstractCegarLoop]: Abstraction has 3835 states and 4803 transitions. [2021-11-22 20:36:45,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:36:45,650 INFO L276 IsEmpty]: Start isEmpty. Operand 3835 states and 4803 transitions. [2021-11-22 20:36:45,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-22 20:36:45,651 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:36:45,651 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:36:45,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-22 20:36:45,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-22 20:36:45,868 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-22 20:36:45,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:36:45,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1979973517, now seen corresponding path program 1 times [2021-11-22 20:36:45,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:36:45,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320732102] [2021-11-22 20:36:45,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:36:45,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:36:45,949 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:36:45,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1544772233] [2021-11-22 20:36:45,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:36:45,951 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:36:45,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:36:45,956 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:36:45,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-22 20:36:46,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:36:46,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 3188 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 20:36:46,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:36:46,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:36:46,914 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:36:46,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:36:46,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320732102] [2021-11-22 20:36:46,915 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:36:46,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544772233] [2021-11-22 20:36:46,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544772233] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:36:46,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:36:46,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 20:36:46,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299038716] [2021-11-22 20:36:46,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:36:46,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 20:36:46,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:36:46,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 20:36:46,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 20:36:46,917 INFO L87 Difference]: Start difference. First operand 3835 states and 4803 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:36:56,096 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:36:59,789 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:36:59,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:36:59,883 INFO L93 Difference]: Finished difference Result 9730 states and 12069 transitions. [2021-11-22 20:36:59,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 20:36:59,884 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2021-11-22 20:36:59,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:36:59,891 INFO L225 Difference]: With dead ends: 9730 [2021-11-22 20:36:59,891 INFO L226 Difference]: Without dead ends: 5943 [2021-11-22 20:36:59,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 20:36:59,897 INFO L933 BasicCegarLoop]: 5731 mSDtfsCounter, 2658 mSDsluCounter, 11750 mSDsCounter, 0 mSdLazyCounter, 6162 mSolverCounterSat, 921 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2658 SdHoareTripleChecker+Valid, 17481 SdHoareTripleChecker+Invalid, 7083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 921 IncrementalHoareTripleChecker+Valid, 6162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2021-11-22 20:36:59,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2658 Valid, 17481 Invalid, 7083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [921 Valid, 6162 Invalid, 0 Unknown, 0 Unchecked, 12.5s Time] [2021-11-22 20:36:59,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5943 states. [2021-11-22 20:37:00,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5943 to 3964. [2021-11-22 20:37:00,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3964 states, 3877 states have (on average 1.2713438225432034) internal successors, (4929), 3963 states have internal predecessors, (4929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:37:00,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3964 states to 3964 states and 4929 transitions. [2021-11-22 20:37:00,037 INFO L78 Accepts]: Start accepts. Automaton has 3964 states and 4929 transitions. Word has length 153 [2021-11-22 20:37:00,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:37:00,038 INFO L470 AbstractCegarLoop]: Abstraction has 3964 states and 4929 transitions. [2021-11-22 20:37:00,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:37:00,038 INFO L276 IsEmpty]: Start isEmpty. Operand 3964 states and 4929 transitions. [2021-11-22 20:37:00,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-22 20:37:00,039 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:37:00,039 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:37:00,062 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-11-22 20:37:00,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:37:00,240 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-22 20:37:00,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:37:00,240 INFO L85 PathProgramCache]: Analyzing trace with hash 191072119, now seen corresponding path program 1 times [2021-11-22 20:37:00,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:37:00,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767032737] [2021-11-22 20:37:00,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:37:00,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:37:00,310 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:37:00,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1163026259] [2021-11-22 20:37:00,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:37:00,310 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:37:00,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:37:00,312 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:37:00,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-22 20:37:01,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:37:01,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 3198 conjuncts, 166 conjunts are in the unsatisfiable core [2021-11-22 20:37:01,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:37:02,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 28 [2021-11-22 20:37:02,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-22 20:37:02,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:37:02,266 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:37:02,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:37:02,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767032737] [2021-11-22 20:37:02,266 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:37:02,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163026259] [2021-11-22 20:37:02,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163026259] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:37:02,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:37:02,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-22 20:37:02,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163234123] [2021-11-22 20:37:02,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:37:02,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-22 20:37:02,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:37:02,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-22 20:37:02,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2021-11-22 20:37:02,268 INFO L87 Difference]: Start difference. First operand 3964 states and 4929 transitions. Second operand has 20 states, 20 states have (on average 7.65) internal successors, (153), 20 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:37:30,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:37:30,894 INFO L93 Difference]: Finished difference Result 20301 states and 24760 transitions. [2021-11-22 20:37:30,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-11-22 20:37:30,895 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.65) internal successors, (153), 20 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2021-11-22 20:37:30,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:37:30,917 INFO L225 Difference]: With dead ends: 20301 [2021-11-22 20:37:30,917 INFO L226 Difference]: Without dead ends: 16475 [2021-11-22 20:37:30,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1181 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=789, Invalid=3371, Unknown=0, NotChecked=0, Total=4160 [2021-11-22 20:37:30,925 INFO L933 BasicCegarLoop]: 6752 mSDtfsCounter, 19594 mSDsluCounter, 65054 mSDsCounter, 0 mSdLazyCounter, 21851 mSolverCounterSat, 1860 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19594 SdHoareTripleChecker+Valid, 71806 SdHoareTripleChecker+Invalid, 23711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1860 IncrementalHoareTripleChecker+Valid, 21851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.5s IncrementalHoareTripleChecker+Time [2021-11-22 20:37:30,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19594 Valid, 71806 Invalid, 23711 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1860 Valid, 21851 Invalid, 0 Unknown, 0 Unchecked, 25.5s Time] [2021-11-22 20:37:30,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16475 states. [2021-11-22 20:37:31,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16475 to 4005. [2021-11-22 20:37:31,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4005 states, 3918 states have (on average 1.2697805002552323) internal successors, (4975), 4004 states have internal predecessors, (4975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:37:31,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4005 states to 4005 states and 4975 transitions. [2021-11-22 20:37:31,136 INFO L78 Accepts]: Start accepts. Automaton has 4005 states and 4975 transitions. Word has length 153 [2021-11-22 20:37:31,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:37:31,136 INFO L470 AbstractCegarLoop]: Abstraction has 4005 states and 4975 transitions. [2021-11-22 20:37:31,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.65) internal successors, (153), 20 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:37:31,136 INFO L276 IsEmpty]: Start isEmpty. Operand 4005 states and 4975 transitions. [2021-11-22 20:37:31,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 20:37:31,137 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:37:31,138 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:37:31,167 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-11-22 20:37:31,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-22 20:37:31,351 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-22 20:37:31,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:37:31,352 INFO L85 PathProgramCache]: Analyzing trace with hash 868457435, now seen corresponding path program 1 times [2021-11-22 20:37:31,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:37:31,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263132912] [2021-11-22 20:37:31,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:37:31,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:37:31,428 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:37:31,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1361759822] [2021-11-22 20:37:31,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:37:31,429 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:37:31,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:37:31,430 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:37:31,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-22 20:37:32,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:37:32,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 3220 conjuncts, 203 conjunts are in the unsatisfiable core [2021-11-22 20:37:32,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:37:32,847 INFO L354 Elim1Store]: treesize reduction 35, result has 35.2 percent of original size [2021-11-22 20:37:32,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 77 treesize of output 95 [2021-11-22 20:37:32,872 INFO L354 Elim1Store]: treesize reduction 35, result has 35.2 percent of original size [2021-11-22 20:37:32,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 115 treesize of output 133 [2021-11-22 20:37:32,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 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 133 treesize of output 131 [2021-11-22 20:37:32,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 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 131 treesize of output 129 [2021-11-22 20:37:32,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-22 20:37:32,971 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 20:37:33,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-22 20:37:33,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-22 20:37:33,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-22 20:37:33,125 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 20:37:33,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 34 [2021-11-22 20:37:33,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2021-11-22 20:37:33,476 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:37:33,476 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 27 treesize of output 33 [2021-11-22 20:37:33,488 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:37:33,488 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 28 treesize of output 34 [2021-11-22 20:37:33,867 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:37:33,868 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 31 treesize of output 37 [2021-11-22 20:37:33,881 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:37:33,881 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 32 treesize of output 38 [2021-11-22 20:37:33,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-22 20:37:33,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-22 20:37:34,940 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 20:37:34,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 59 [2021-11-22 20:37:34,946 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 20:37:34,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 48 [2021-11-22 20:37:34,990 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 20:37:34,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 41 [2021-11-22 20:37:34,994 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 20:37:34,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 29 [2021-11-22 20:37:35,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:37:35,069 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:37:35,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:37:35,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263132912] [2021-11-22 20:37:35,069 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:37:35,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361759822] [2021-11-22 20:37:35,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361759822] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:37:35,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:37:35,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2021-11-22 20:37:35,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083970377] [2021-11-22 20:37:35,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:37:35,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-11-22 20:37:35,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:37:35,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-11-22 20:37:35,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1526, Unknown=0, NotChecked=0, Total=1640 [2021-11-22 20:37:35,072 INFO L87 Difference]: Start difference. First operand 4005 states and 4975 transitions. Second operand has 41 states, 41 states have (on average 3.7560975609756095) internal successors, (154), 41 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:40:57,308 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:43:02,464 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:44:47,816 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:45:11,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:45:11,033 INFO L93 Difference]: Finished difference Result 84824 states and 102562 transitions. [2021-11-22 20:45:11,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 701 states. [2021-11-22 20:45:11,035 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.7560975609756095) internal successors, (154), 41 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2021-11-22 20:45:11,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:45:11,171 INFO L225 Difference]: With dead ends: 84824 [2021-11-22 20:45:11,171 INFO L226 Difference]: Without dead ends: 81043 [2021-11-22 20:45:11,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 848 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 734 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243431 ImplicationChecksByTransitivity, 60.3s TimeCoverageRelationStatistics Valid=35304, Invalid=505656, Unknown=0, NotChecked=0, Total=540960 [2021-11-22 20:45:11,223 INFO L933 BasicCegarLoop]: 26568 mSDtfsCounter, 120944 mSDsluCounter, 546528 mSDsCounter, 0 mSdLazyCounter, 238735 mSolverCounterSat, 5474 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 269.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120944 SdHoareTripleChecker+Valid, 573096 SdHoareTripleChecker+Invalid, 244211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.8s SdHoareTripleChecker+Time, 5474 IncrementalHoareTripleChecker+Valid, 238735 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 375.4s IncrementalHoareTripleChecker+Time [2021-11-22 20:45:11,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120944 Valid, 573096 Invalid, 244211 Unknown, 0 Unchecked, 1.8s Time], IncrementalHoareTripleChecker [5474 Valid, 238735 Invalid, 2 Unknown, 0 Unchecked, 375.4s Time] [2021-11-22 20:45:11,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81043 states. [2021-11-22 20:45:12,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81043 to 8988. [2021-11-22 20:45:12,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8988 states, 8901 states have (on average 1.2663745646556566) internal successors, (11272), 8987 states have internal predecessors, (11272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:45:12,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8988 states to 8988 states and 11272 transitions. [2021-11-22 20:45:12,314 INFO L78 Accepts]: Start accepts. Automaton has 8988 states and 11272 transitions. Word has length 154 [2021-11-22 20:45:12,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:45:12,315 INFO L470 AbstractCegarLoop]: Abstraction has 8988 states and 11272 transitions. [2021-11-22 20:45:12,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.7560975609756095) internal successors, (154), 41 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:45:12,315 INFO L276 IsEmpty]: Start isEmpty. Operand 8988 states and 11272 transitions. [2021-11-22 20:45:12,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 20:45:12,316 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:45:12,317 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:45:12,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-11-22 20:45:12,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:45:12,518 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-22 20:45:12,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:45:12,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1377930525, now seen corresponding path program 1 times [2021-11-22 20:45:12,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:45:12,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207578842] [2021-11-22 20:45:12,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:45:12,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:45:12,601 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:45:12,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2035747546] [2021-11-22 20:45:12,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:45:12,601 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:45:12,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:45:12,603 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:45:12,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-22 20:45:13,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:45:13,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 3215 conjuncts, 213 conjunts are in the unsatisfiable core [2021-11-22 20:45:13,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:45:15,177 INFO L354 Elim1Store]: treesize reduction 92, result has 17.1 percent of original size [2021-11-22 20:45:15,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 146 treesize of output 162 [2021-11-22 20:45:15,187 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 20:45:15,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 224 [2021-11-22 20:45:15,224 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:45:15,225 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 203 treesize of output 209 [2021-11-22 20:45:15,234 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 204 treesize of output 203 [2021-11-22 20:45:15,265 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:45:15,265 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 203 treesize of output 209 [2021-11-22 20:45:15,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-22 20:45:15,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-22 20:45:15,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:45:15,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:45:15,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:45:15,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 20 [2021-11-22 20:45:15,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 50 [2021-11-22 20:45:15,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 89 [2021-11-22 20:45:15,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 66 [2021-11-22 20:45:17,685 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 20:45:17,685 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 94 treesize of output 94 [2021-11-22 20:45:18,139 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-11-22 20:45:18,139 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 116 treesize of output 115 [2021-11-22 20:45:18,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 112 [2021-11-22 20:45:18,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 101 [2021-11-22 20:45:18,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2021-11-22 20:45:20,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 92 [2021-11-22 20:45:20,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 81 [2021-11-22 20:45:20,226 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:45:20,227 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 71 treesize of output 71 [2021-11-22 20:45:20,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 49 [2021-11-22 20:45:21,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 6 [2021-11-22 20:45:21,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2021-11-22 20:45:21,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:45:21,491 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:45:21,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:45:21,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207578842] [2021-11-22 20:45:21,491 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:45:21,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035747546] [2021-11-22 20:45:21,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035747546] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:45:21,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:45:21,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2021-11-22 20:45:21,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965431072] [2021-11-22 20:45:21,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:45:21,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-22 20:45:21,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:45:21,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-22 20:45:21,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2021-11-22 20:45:21,494 INFO L87 Difference]: Start difference. First operand 8988 states and 11272 transitions. Second operand has 33 states, 33 states have (on average 4.666666666666667) internal successors, (154), 33 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:46:09,279 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:46:51,609 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 20:46:58,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:46:58,756 INFO L93 Difference]: Finished difference Result 16128 states and 20139 transitions. [2021-11-22 20:46:58,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-22 20:46:58,756 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.666666666666667) internal successors, (154), 33 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2021-11-22 20:46:58,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:46:58,763 INFO L225 Difference]: With dead ends: 16128 [2021-11-22 20:46:58,763 INFO L226 Difference]: Without dead ends: 7657 [2021-11-22 20:46:58,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=307, Invalid=2663, Unknown=0, NotChecked=0, Total=2970 [2021-11-22 20:46:58,768 INFO L933 BasicCegarLoop]: 5553 mSDtfsCounter, 2106 mSDsluCounter, 93762 mSDsCounter, 0 mSdLazyCounter, 33286 mSolverCounterSat, 63 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 74.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2106 SdHoareTripleChecker+Valid, 99315 SdHoareTripleChecker+Invalid, 35257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 33286 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 1906 IncrementalHoareTripleChecker+Unchecked, 93.1s IncrementalHoareTripleChecker+Time [2021-11-22 20:46:58,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2106 Valid, 99315 Invalid, 35257 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [63 Valid, 33286 Invalid, 2 Unknown, 1906 Unchecked, 93.1s Time] [2021-11-22 20:46:58,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7657 states. [2021-11-22 20:46:59,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7657 to 5921. [2021-11-22 20:46:59,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5921 states, 5834 states have (on average 1.2603702434007542) internal successors, (7353), 5920 states have internal predecessors, (7353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:46:59,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5921 states to 5921 states and 7353 transitions. [2021-11-22 20:46:59,163 INFO L78 Accepts]: Start accepts. Automaton has 5921 states and 7353 transitions. Word has length 154 [2021-11-22 20:46:59,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:46:59,163 INFO L470 AbstractCegarLoop]: Abstraction has 5921 states and 7353 transitions. [2021-11-22 20:46:59,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.666666666666667) internal successors, (154), 33 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:46:59,164 INFO L276 IsEmpty]: Start isEmpty. Operand 5921 states and 7353 transitions. [2021-11-22 20:46:59,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-22 20:46:59,166 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:46:59,166 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:46:59,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-22 20:46:59,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:46:59,384 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-22 20:46:59,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:46:59,384 INFO L85 PathProgramCache]: Analyzing trace with hash -13389785, now seen corresponding path program 1 times [2021-11-22 20:46:59,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:46:59,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797987901] [2021-11-22 20:46:59,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:46:59,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:46:59,445 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:46:59,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1333823721] [2021-11-22 20:46:59,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:46:59,445 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:46:59,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:46:59,447 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:46:59,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-22 20:47:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:47:00,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 3204 conjuncts, 178 conjunts are in the unsatisfiable core [2021-11-22 20:47:00,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:47:00,375 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 [2021-11-22 20:47:00,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:47:01,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-22 20:47:01,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:47:01,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-11-22 20:47:01,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:47:01,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-22 20:47:01,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:47:01,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-22 20:47:01,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:47:01,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-22 20:47:01,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:47:01,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-22 20:47:01,279 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 20:47:01,279 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 [2021-11-22 20:47:01,393 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 20:47:01,394 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 52 treesize of output 54 [2021-11-22 20:47:01,413 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 20:47:01,414 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 46 treesize of output 48 [2021-11-22 20:47:01,436 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 20:47:01,437 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 40 treesize of output 42 [2021-11-22 20:47:02,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:47:02,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 57 [2021-11-22 20:47:02,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:47:02,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2021-11-22 20:47:02,025 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:47:02,025 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 36 treesize of output 42 [2021-11-22 20:47:02,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2021-11-22 20:47:02,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 6 [2021-11-22 20:47:02,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2021-11-22 20:47:02,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-22 20:47:02,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-22 20:47:02,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:47:02,795 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:47:02,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:47:02,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797987901] [2021-11-22 20:47:02,795 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:47:02,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333823721] [2021-11-22 20:47:02,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333823721] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:47:02,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:47:02,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-11-22 20:47:02,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769545644] [2021-11-22 20:47:02,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:47:02,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-22 20:47:02,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:47:02,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-22 20:47:02,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2021-11-22 20:47:02,798 INFO L87 Difference]: Start difference. First operand 5921 states and 7353 transitions. Second operand has 24 states, 24 states have (on average 6.416666666666667) internal successors, (154), 24 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:47:43,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:47:43,827 INFO L93 Difference]: Finished difference Result 14596 states and 18111 transitions. [2021-11-22 20:47:43,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-22 20:47:43,828 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.416666666666667) internal successors, (154), 24 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2021-11-22 20:47:43,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:47:43,838 INFO L225 Difference]: With dead ends: 14596 [2021-11-22 20:47:43,838 INFO L226 Difference]: Without dead ends: 10662 [2021-11-22 20:47:43,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=339, Invalid=1641, Unknown=0, NotChecked=0, Total=1980 [2021-11-22 20:47:43,842 INFO L933 BasicCegarLoop]: 7562 mSDtfsCounter, 12235 mSDsluCounter, 55286 mSDsCounter, 0 mSdLazyCounter, 13604 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12235 SdHoareTripleChecker+Valid, 62848 SdHoareTripleChecker+Invalid, 13786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 13604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.4s IncrementalHoareTripleChecker+Time [2021-11-22 20:47:43,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12235 Valid, 62848 Invalid, 13786 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [182 Valid, 13604 Invalid, 0 Unknown, 0 Unchecked, 38.4s Time] [2021-11-22 20:47:43,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10662 states. [2021-11-22 20:47:44,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10662 to 6043. [2021-11-22 20:47:44,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6043 states, 5956 states have (on average 1.2578912021490933) internal successors, (7492), 6042 states have internal predecessors, (7492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:47:44,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6043 states to 6043 states and 7492 transitions. [2021-11-22 20:47:44,232 INFO L78 Accepts]: Start accepts. Automaton has 6043 states and 7492 transitions. Word has length 154 [2021-11-22 20:47:44,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:47:44,232 INFO L470 AbstractCegarLoop]: Abstraction has 6043 states and 7492 transitions. [2021-11-22 20:47:44,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.416666666666667) internal successors, (154), 24 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:47:44,232 INFO L276 IsEmpty]: Start isEmpty. Operand 6043 states and 7492 transitions. [2021-11-22 20:47:44,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-22 20:47:44,234 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:47:44,234 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:47:44,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-22 20:47:44,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:47:44,459 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 84 more)] === [2021-11-22 20:47:44,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:47:44,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1470701334, now seen corresponding path program 1 times [2021-11-22 20:47:44,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:47:44,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470186879] [2021-11-22 20:47:44,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:47:44,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:47:44,517 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 20:47:44,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [708976225] [2021-11-22 20:47:44,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:47:44,518 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:47:44,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:47:44,519 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:47:44,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-22 20:47:45,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:47:45,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 3242 conjuncts, 214 conjunts are in the unsatisfiable core [2021-11-22 20:47:45,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:47:45,506 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 [2021-11-22 20:47:45,600 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 6 treesize of output 5 [2021-11-22 20:47:45,686 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 20:47:45,686 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 [2021-11-22 20:47:45,770 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 11 treesize of output 10 [2021-11-22 20:47:45,960 INFO L354 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2021-11-22 20:47:45,960 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 21 treesize of output 30 [2021-11-22 20:47:46,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:47:46,125 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 20:47:46,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 97 [2021-11-22 20:47:46,128 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 20:47:46,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 159 [2021-11-22 20:47:46,137 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 124 treesize of output 123 [2021-11-22 20:47:46,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 50 [2021-11-22 20:47:46,196 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 20:47:46,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 106 treesize of output 70 [2021-11-22 20:47:46,378 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 12 [2021-11-22 20:47:46,380 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 6 treesize of output 5 [2021-11-22 20:47:47,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 20:47:47,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 80 [2021-11-22 20:47:47,501 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:47:47,502 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 31 treesize of output 37 [2021-11-22 20:47:47,510 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:47:47,510 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 32 treesize of output 38 [2021-11-22 20:47:47,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-22 20:47:47,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-22 20:47:48,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 39 [2021-11-22 20:47:48,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-11-22 20:47:48,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2021-11-22 20:47:48,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2021-11-22 20:47:48,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:47:48,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:47:48,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:47:48,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470186879] [2021-11-22 20:47:48,515 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 20:47:48,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708976225] [2021-11-22 20:47:48,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708976225] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:47:48,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:47:48,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2021-11-22 20:47:48,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837040377] [2021-11-22 20:47:48,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:47:48,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-11-22 20:47:48,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:47:48,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-11-22 20:47:48,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1837, Unknown=0, NotChecked=0, Total=1980 [2021-11-22 20:47:48,517 INFO L87 Difference]: Start difference. First operand 6043 states and 7492 transitions. Second operand has 45 states, 45 states have (on average 3.4444444444444446) internal successors, (155), 45 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 20:48:10,919 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15