./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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_init_dynamic_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash fd704c0997d5526a33ae946f9f6b6d8e05b412ad44e87cb653981b428eeb987a --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 03:21:55,009 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 03:21:55,014 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 03:21:55,035 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 03:21:55,038 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 03:21:55,040 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 03:21:55,048 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 03:21:55,052 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 03:21:55,054 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 03:21:55,057 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 03:21:55,058 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 03:21:55,059 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 03:21:55,059 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 03:21:55,061 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 03:21:55,062 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 03:21:55,066 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 03:21:55,067 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 03:21:55,068 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 03:21:55,070 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 03:21:55,074 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 03:21:55,075 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 03:21:55,076 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 03:21:55,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 03:21:55,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 03:21:55,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 03:21:55,090 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 03:21:55,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 03:21:55,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 03:21:55,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 03:21:55,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 03:21:55,092 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 03:21:55,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 03:21:55,094 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 03:21:55,095 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 03:21:55,095 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 03:21:55,096 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 03:21:55,096 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 03:21:55,096 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 03:21:55,096 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 03:21:55,097 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 03:21:55,097 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 03:21:55,099 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-16 03:21:55,125 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 03:21:55,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 03:21:55,127 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 03:21:55,127 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 03:21:55,128 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 03:21:55,128 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 03:21:55,128 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 03:21:55,128 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 03:21:55,128 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 03:21:55,129 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 03:21:55,129 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 03:21:55,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 03:21:55,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 03:21:55,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 03:21:55,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 03:21:55,130 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 03:21:55,130 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 03:21:55,130 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 03:21:55,130 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 03:21:55,131 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 03:21:55,131 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 03:21:55,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:21:55,131 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 03:21:55,131 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 03:21:55,131 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 03:21:55,131 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 03:21:55,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 03:21:55,132 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 03:21:55,132 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 03:21:55,132 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 03:21:55,132 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 03:21:55,132 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd704c0997d5526a33ae946f9f6b6d8e05b412ad44e87cb653981b428eeb987a [2021-12-16 03:21:55,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 03:21:55,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 03:21:55,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 03:21:55,389 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 03:21:55,389 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 03:21:55,390 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i [2021-12-16 03:21:55,435 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e807da34e/ced1205ef81f480787247f3a272a88bc/FLAG85719dfa0 [2021-12-16 03:21:56,044 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 03:21:56,045 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i [2021-12-16 03:21:56,068 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e807da34e/ced1205ef81f480787247f3a272a88bc/FLAG85719dfa0 [2021-12-16 03:21:56,461 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e807da34e/ced1205ef81f480787247f3a272a88bc [2021-12-16 03:21:56,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 03:21:56,463 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 03:21:56,464 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 03:21:56,465 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 03:21:56,470 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 03:21:56,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:21:56" (1/1) ... [2021-12-16 03:21:56,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@532fba14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:21:56, skipping insertion in model container [2021-12-16 03:21:56,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:21:56" (1/1) ... [2021-12-16 03:21:56,475 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 03:21:56,569 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 03:21:56,753 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_init_dynamic_harness.i[4505,4518] [2021-12-16 03:21:56,759 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_init_dynamic_harness.i[4565,4578] [2021-12-16 03:21:57,445 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-16 03:21:57,509 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:21:57,510 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:21:57,510 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:21:57,511 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:21:57,512 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:21:57,525 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:21:57,525 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:21:57,527 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:21:57,527 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:21:57,709 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-16 03:21:57,710 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-16 03:21:57,710 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-16 03:21:57,714 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-16 03:21:57,715 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-16 03:21:57,716 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-16 03:21:57,716 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-16 03:21:57,716 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-16 03:21:57,717 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-16 03:21:57,717 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-16 03:21:57,812 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:21:57,813 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:21:57,858 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:21:57,877 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 03:21:57,885 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_init_dynamic_harness.i[4505,4518] [2021-12-16 03:21:57,886 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_init_dynamic_harness.i[4565,4578] [2021-12-16 03:21:57,922 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-16 03:21:57,928 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:21:57,928 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:21:57,928 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:21:57,929 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:21:57,929 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:21:57,945 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:21:57,945 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:21:57,946 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:21:57,946 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:21:57,979 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-16 03:21:57,980 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-16 03:21:57,980 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-16 03:21:57,981 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-16 03:21:57,981 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-16 03:21:57,982 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-16 03:21:57,982 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-16 03:21:57,982 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-16 03:21:57,983 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-16 03:21:57,984 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-16 03:21:57,998 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:21:58,002 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:21:58,027 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:21:58,178 INFO L208 MainTranslator]: Completed translation [2021-12-16 03:21:58,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:21:58 WrapperNode [2021-12-16 03:21:58,179 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 03:21:58,180 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 03:21:58,180 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 03:21:58,180 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 03:21:58,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:21:58" (1/1) ... [2021-12-16 03:21:58,268 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:21:58" (1/1) ... [2021-12-16 03:21:58,321 INFO L137 Inliner]: procedures = 689, calls = 1514, calls flagged for inlining = 53, calls inlined = 9, statements flattened = 736 [2021-12-16 03:21:58,322 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 03:21:58,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 03:21:58,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 03:21:58,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 03:21:58,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:21:58" (1/1) ... [2021-12-16 03:21:58,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:21:58" (1/1) ... [2021-12-16 03:21:58,341 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:21:58" (1/1) ... [2021-12-16 03:21:58,342 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:21:58" (1/1) ... [2021-12-16 03:21:58,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:21:58" (1/1) ... [2021-12-16 03:21:58,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:21:58" (1/1) ... [2021-12-16 03:21:58,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:21:58" (1/1) ... [2021-12-16 03:21:58,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 03:21:58,391 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 03:21:58,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 03:21:58,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 03:21:58,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:21:58" (1/1) ... [2021-12-16 03:21:58,407 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:21:58,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:21:58,435 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) [2021-12-16 03:21:58,437 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 [2021-12-16 03:21:58,462 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-12-16 03:21:58,462 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-12-16 03:21:58,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 03:21:58,462 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-12-16 03:21:58,462 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-12-16 03:21:58,463 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-16 03:21:58,463 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-16 03:21:58,463 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-12-16 03:21:58,463 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-12-16 03:21:58,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 03:21:58,463 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-16 03:21:58,463 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-16 03:21:58,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-16 03:21:58,464 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-16 03:21:58,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 03:21:58,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 03:21:58,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 03:21:58,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 03:21:58,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 03:21:58,465 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-16 03:21:58,465 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-16 03:21:58,465 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-16 03:21:58,465 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-16 03:21:58,465 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-12-16 03:21:58,465 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-12-16 03:21:58,465 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-12-16 03:21:58,465 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-12-16 03:21:58,466 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-16 03:21:58,466 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-16 03:21:58,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 03:21:58,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 03:21:58,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-16 03:21:58,466 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-16 03:21:58,466 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-16 03:21:58,467 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-16 03:21:58,467 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-16 03:21:58,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 03:21:58,467 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2021-12-16 03:21:58,467 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2021-12-16 03:21:58,467 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2021-12-16 03:21:58,467 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2021-12-16 03:21:58,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 03:21:58,736 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 03:21:58,737 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 03:21:59,227 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 03:21:59,235 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 03:21:59,236 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-12-16 03:21:59,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:21:59 BoogieIcfgContainer [2021-12-16 03:21:59,237 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 03:21:59,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 03:21:59,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 03:21:59,241 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 03:21:59,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:21:56" (1/3) ... [2021-12-16 03:21:59,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2108e5bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:21:59, skipping insertion in model container [2021-12-16 03:21:59,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:21:58" (2/3) ... [2021-12-16 03:21:59,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2108e5bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:21:59, skipping insertion in model container [2021-12-16 03:21:59,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:21:59" (3/3) ... [2021-12-16 03:21:59,244 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_init_dynamic_harness.i [2021-12-16 03:21:59,251 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 03:21:59,251 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 03:21:59,294 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 03:21:59,308 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 [2021-12-16 03:21:59,309 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 03:21:59,346 INFO L276 IsEmpty]: Start isEmpty. Operand has 197 states, 129 states have (on average 1.2635658914728682) internal successors, (163), 129 states have internal predecessors, (163), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2021-12-16 03:21:59,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-16 03:21:59,369 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:21:59,369 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:21:59,370 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:21:59,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:21:59,374 INFO L85 PathProgramCache]: Analyzing trace with hash -657799819, now seen corresponding path program 1 times [2021-12-16 03:21:59,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:21:59,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968793124] [2021-12-16 03:21:59,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:21:59,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:21:59,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:21:59,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:21:59,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:21:59,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 03:21:59,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:21:59,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 03:21:59,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:21:59,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 03:21:59,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:21:59,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968793124] [2021-12-16 03:21:59,800 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-12-16 03:21:59,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136573104] [2021-12-16 03:21:59,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:21:59,800 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:21:59,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:21:59,802 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) [2021-12-16 03:21:59,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 03:22:00,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:00,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 2206 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-16 03:22:00,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:22:00,445 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-12-16 03:22:00,445 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:22:00,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136573104] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:22:00,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:22:00,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 03:22:00,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085458119] [2021-12-16 03:22:00,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:22:00,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-16 03:22:00,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:22:00,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-16 03:22:00,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:22:00,475 INFO L87 Difference]: Start difference. First operand has 197 states, 129 states have (on average 1.2635658914728682) internal successors, (163), 129 states have internal predecessors, (163), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-16 03:22:00,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:22:00,537 INFO L93 Difference]: Finished difference Result 389 states and 571 transitions. [2021-12-16 03:22:00,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-16 03:22:00,539 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 99 [2021-12-16 03:22:00,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:22:00,550 INFO L225 Difference]: With dead ends: 389 [2021-12-16 03:22:00,550 INFO L226 Difference]: Without dead ends: 190 [2021-12-16 03:22:00,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:22:00,556 INFO L933 BasicCegarLoop]: 261 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, 261 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 [2021-12-16 03:22:00,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:22:00,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-12-16 03:22:00,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2021-12-16 03:22:00,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 121 states have (on average 1.2314049586776858) internal successors, (149), 123 states have internal predecessors, (149), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2021-12-16 03:22:00,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 253 transitions. [2021-12-16 03:22:00,600 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 253 transitions. Word has length 99 [2021-12-16 03:22:00,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:22:00,602 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 253 transitions. [2021-12-16 03:22:00,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-16 03:22:00,602 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 253 transitions. [2021-12-16 03:22:00,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-16 03:22:00,605 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:22:00,607 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:22:00,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-16 03:22:00,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-16 03:22:00,820 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:22:00,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:22:00,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1585195372, now seen corresponding path program 1 times [2021-12-16 03:22:00,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:22:00,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658905153] [2021-12-16 03:22:00,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:22:00,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:22:00,901 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:22:00,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2067451868] [2021-12-16 03:22:00,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:22:00,902 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:22:00,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:22:00,903 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) [2021-12-16 03:22:00,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 03:22:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:01,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 2360 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-16 03:22:01,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:22:01,614 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2021-12-16 03:22:01,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:22:01,947 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2021-12-16 03:22:01,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:22:01,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658905153] [2021-12-16 03:22:01,948 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:22:01,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067451868] [2021-12-16 03:22:01,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067451868] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-16 03:22:01,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:22:01,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 12 [2021-12-16 03:22:01,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233647996] [2021-12-16 03:22:01,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:22:01,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:22:01,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:22:01,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:22:01,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-16 03:22:01,950 INFO L87 Difference]: Start difference. First operand 190 states and 253 transitions. Second operand has 5 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2021-12-16 03:22:02,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:22:02,007 INFO L93 Difference]: Finished difference Result 198 states and 261 transitions. [2021-12-16 03:22:02,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 03:22:02,007 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 133 [2021-12-16 03:22:02,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:22:02,010 INFO L225 Difference]: With dead ends: 198 [2021-12-16 03:22:02,011 INFO L226 Difference]: Without dead ends: 196 [2021-12-16 03:22:02,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-16 03:22:02,012 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 6 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:22:02,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 985 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:22:02,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-12-16 03:22:02,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 195. [2021-12-16 03:22:02,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 124 states have (on average 1.2258064516129032) internal successors, (152), 127 states have internal predecessors, (152), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2021-12-16 03:22:02,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 258 transitions. [2021-12-16 03:22:02,025 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 258 transitions. Word has length 133 [2021-12-16 03:22:02,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:22:02,025 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 258 transitions. [2021-12-16 03:22:02,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2021-12-16 03:22:02,026 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 258 transitions. [2021-12-16 03:22:02,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-16 03:22:02,028 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:22:02,028 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:22:02,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-16 03:22:02,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-12-16 03:22:02,242 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:22:02,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:22:02,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1587042414, now seen corresponding path program 1 times [2021-12-16 03:22:02,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:22:02,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651225286] [2021-12-16 03:22:02,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:22:02,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:22:02,291 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:22:02,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [639305577] [2021-12-16 03:22:02,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:22:02,296 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:22:02,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:22:02,297 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) [2021-12-16 03:22:02,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-16 03:22:02,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:02,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 2365 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-16 03:22:02,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:22:02,959 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-16 03:22:02,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:22:02,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:22:02,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651225286] [2021-12-16 03:22:02,960 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:22:02,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639305577] [2021-12-16 03:22:02,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639305577] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:22:02,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:22:02,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 03:22:02,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028839473] [2021-12-16 03:22:02,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:22:02,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 03:22:02,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:22:02,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 03:22:02,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:22:02,963 INFO L87 Difference]: Start difference. First operand 195 states and 258 transitions. Second operand has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-12-16 03:22:03,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:22:03,016 INFO L93 Difference]: Finished difference Result 379 states and 496 transitions. [2021-12-16 03:22:03,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 03:22:03,016 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 133 [2021-12-16 03:22:03,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:22:03,019 INFO L225 Difference]: With dead ends: 379 [2021-12-16 03:22:03,019 INFO L226 Difference]: Without dead ends: 195 [2021-12-16 03:22:03,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-16 03:22:03,021 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 13 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:22:03,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 1213 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:22:03,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-12-16 03:22:03,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2021-12-16 03:22:03,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 124 states have (on average 1.217741935483871) internal successors, (151), 127 states have internal predecessors, (151), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2021-12-16 03:22:03,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 257 transitions. [2021-12-16 03:22:03,031 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 257 transitions. Word has length 133 [2021-12-16 03:22:03,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:22:03,032 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 257 transitions. [2021-12-16 03:22:03,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-12-16 03:22:03,032 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 257 transitions. [2021-12-16 03:22:03,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-16 03:22:03,034 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:22:03,034 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:22:03,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-16 03:22:03,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:22:03,256 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:22:03,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:22:03,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1650813770, now seen corresponding path program 1 times [2021-12-16 03:22:03,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:22:03,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96273382] [2021-12-16 03:22:03,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:22:03,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:22:03,295 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:22:03,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1042663274] [2021-12-16 03:22:03,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:22:03,296 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:22:03,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:22:03,297 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) [2021-12-16 03:22:03,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-16 03:22:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:03,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 2379 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-16 03:22:03,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:22:03,902 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2021-12-16 03:22:03,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:22:03,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:22:03,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96273382] [2021-12-16 03:22:03,904 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:22:03,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042663274] [2021-12-16 03:22:03,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042663274] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:22:03,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:22:03,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:22:03,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894297118] [2021-12-16 03:22:03,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:22:03,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:22:03,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:22:03,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:22:03,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:22:03,908 INFO L87 Difference]: Start difference. First operand 195 states and 257 transitions. Second operand has 5 states, 4 states have (on average 14.0) internal successors, (56), 5 states have internal predecessors, (56), 4 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2021-12-16 03:22:03,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:22:03,947 INFO L93 Difference]: Finished difference Result 375 states and 493 transitions. [2021-12-16 03:22:03,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:22:03,948 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.0) internal successors, (56), 5 states have internal predecessors, (56), 4 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) Word has length 135 [2021-12-16 03:22:03,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:22:03,950 INFO L225 Difference]: With dead ends: 375 [2021-12-16 03:22:03,950 INFO L226 Difference]: Without dead ends: 197 [2021-12-16 03:22:03,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:22:03,953 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 10 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:22:03,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 727 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:22:03,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-12-16 03:22:03,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 196. [2021-12-16 03:22:03,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 125 states have (on average 1.216) internal successors, (152), 128 states have internal predecessors, (152), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2021-12-16 03:22:03,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 258 transitions. [2021-12-16 03:22:03,963 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 258 transitions. Word has length 135 [2021-12-16 03:22:03,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:22:03,963 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 258 transitions. [2021-12-16 03:22:03,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.0) internal successors, (56), 5 states have internal predecessors, (56), 4 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2021-12-16 03:22:03,963 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 258 transitions. [2021-12-16 03:22:03,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-16 03:22:03,965 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:22:03,965 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:22:03,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-16 03:22:04,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:22:04,179 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:22:04,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:22:04,180 INFO L85 PathProgramCache]: Analyzing trace with hash 574277750, now seen corresponding path program 1 times [2021-12-16 03:22:04,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:22:04,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102978555] [2021-12-16 03:22:04,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:22:04,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:22:04,220 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:22:04,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1651934675] [2021-12-16 03:22:04,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:22:04,221 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:22:04,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:22:04,226 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) [2021-12-16 03:22:04,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-16 03:22:04,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:04,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 2417 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-16 03:22:04,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:22:04,876 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2021-12-16 03:22:04,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:22:05,308 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-12-16 03:22:05,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:22:05,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102978555] [2021-12-16 03:22:05,308 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:22:05,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651934675] [2021-12-16 03:22:05,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651934675] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 03:22:05,309 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 03:22:05,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 15 [2021-12-16 03:22:05,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465165946] [2021-12-16 03:22:05,309 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 03:22:05,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-16 03:22:05,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:22:05,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-16 03:22:05,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-12-16 03:22:05,311 INFO L87 Difference]: Start difference. First operand 196 states and 258 transitions. Second operand has 15 states, 13 states have (on average 5.923076923076923) internal successors, (77), 15 states have internal predecessors, (77), 6 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (28), 7 states have call predecessors, (28), 6 states have call successors, (28) [2021-12-16 03:22:05,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:22:05,459 INFO L93 Difference]: Finished difference Result 384 states and 500 transitions. [2021-12-16 03:22:05,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 03:22:05,461 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 5.923076923076923) internal successors, (77), 15 states have internal predecessors, (77), 6 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (28), 7 states have call predecessors, (28), 6 states have call successors, (28) Word has length 139 [2021-12-16 03:22:05,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:22:05,462 INFO L225 Difference]: With dead ends: 384 [2021-12-16 03:22:05,462 INFO L226 Difference]: Without dead ends: 199 [2021-12-16 03:22:05,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2021-12-16 03:22:05,464 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 41 mSDsluCounter, 1922 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 2165 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:22:05,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 2165 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:22:05,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-12-16 03:22:05,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 198. [2021-12-16 03:22:05,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 127 states have (on average 1.2125984251968505) internal successors, (154), 130 states have internal predecessors, (154), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2021-12-16 03:22:05,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 260 transitions. [2021-12-16 03:22:05,479 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 260 transitions. Word has length 139 [2021-12-16 03:22:05,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:22:05,479 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 260 transitions. [2021-12-16 03:22:05,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 5.923076923076923) internal successors, (77), 15 states have internal predecessors, (77), 6 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (28), 7 states have call predecessors, (28), 6 states have call successors, (28) [2021-12-16 03:22:05,480 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 260 transitions. [2021-12-16 03:22:05,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-16 03:22:05,483 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:22:05,483 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:22:05,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-16 03:22:05,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:22:05,704 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:22:05,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:22:05,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1733366986, now seen corresponding path program 2 times [2021-12-16 03:22:05,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:22:05,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608593264] [2021-12-16 03:22:05,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:22:05,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:22:05,750 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:22:05,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [257202303] [2021-12-16 03:22:05,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 03:22:05,751 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:22:05,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:22:05,752 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) [2021-12-16 03:22:05,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-16 03:22:06,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 03:22:06,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 03:22:06,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 2455 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-16 03:22:06,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:22:06,957 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 24 proven. 14 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2021-12-16 03:22:06,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:22:07,469 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 22 proven. 4 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2021-12-16 03:22:07,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:22:07,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608593264] [2021-12-16 03:22:07,470 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:22:07,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257202303] [2021-12-16 03:22:07,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257202303] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 03:22:07,470 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 03:22:07,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-12-16 03:22:07,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291759946] [2021-12-16 03:22:07,470 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 03:22:07,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-16 03:22:07,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:22:07,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-16 03:22:07,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-12-16 03:22:07,472 INFO L87 Difference]: Start difference. First operand 198 states and 260 transitions. Second operand has 17 states, 15 states have (on average 5.2) internal successors, (78), 17 states have internal predecessors, (78), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (27), 6 states have call predecessors, (27), 6 states have call successors, (27) [2021-12-16 03:22:07,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:22:07,620 INFO L93 Difference]: Finished difference Result 388 states and 504 transitions. [2021-12-16 03:22:07,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 03:22:07,623 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 5.2) internal successors, (78), 17 states have internal predecessors, (78), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (27), 6 states have call predecessors, (27), 6 states have call successors, (27) Word has length 143 [2021-12-16 03:22:07,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:22:07,625 INFO L225 Difference]: With dead ends: 388 [2021-12-16 03:22:07,625 INFO L226 Difference]: Without dead ends: 201 [2021-12-16 03:22:07,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2021-12-16 03:22:07,627 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 40 mSDsluCounter, 1700 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 1945 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:22:07,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 1945 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:22:07,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-12-16 03:22:07,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 200. [2021-12-16 03:22:07,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 129 states have (on average 1.2093023255813953) internal successors, (156), 132 states have internal predecessors, (156), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2021-12-16 03:22:07,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 262 transitions. [2021-12-16 03:22:07,640 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 262 transitions. Word has length 143 [2021-12-16 03:22:07,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:22:07,641 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 262 transitions. [2021-12-16 03:22:07,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 5.2) internal successors, (78), 17 states have internal predecessors, (78), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (27), 6 states have call predecessors, (27), 6 states have call successors, (27) [2021-12-16 03:22:07,642 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 262 transitions. [2021-12-16 03:22:07,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-16 03:22:07,643 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:22:07,643 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:22:07,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-16 03:22:07,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:22:07,851 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:22:07,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:22:07,852 INFO L85 PathProgramCache]: Analyzing trace with hash 833600758, now seen corresponding path program 3 times [2021-12-16 03:22:07,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:22:07,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862147424] [2021-12-16 03:22:07,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:22:07,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:22:07,904 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:22:07,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1613135362] [2021-12-16 03:22:07,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-16 03:22:07,905 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:22:07,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:22:07,906 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) [2021-12-16 03:22:07,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-16 03:22:09,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-16 03:22:09,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 03:22:09,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 2081 conjuncts, 29 conjunts are in the unsatisfiable core [2021-12-16 03:22:09,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:22:09,911 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 43 proven. 9 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2021-12-16 03:22:09,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:22:10,504 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 34 proven. 9 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2021-12-16 03:22:10,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:22:10,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862147424] [2021-12-16 03:22:10,504 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:22:10,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613135362] [2021-12-16 03:22:10,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613135362] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 03:22:10,504 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 03:22:10,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-12-16 03:22:10,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383375594] [2021-12-16 03:22:10,505 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 03:22:10,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-16 03:22:10,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:22:10,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-16 03:22:10,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-12-16 03:22:10,506 INFO L87 Difference]: Start difference. First operand 200 states and 262 transitions. Second operand has 19 states, 17 states have (on average 4.529411764705882) internal successors, (77), 19 states have internal predecessors, (77), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2021-12-16 03:22:10,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:22:10,862 INFO L93 Difference]: Finished difference Result 392 states and 508 transitions. [2021-12-16 03:22:10,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 03:22:10,863 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 4.529411764705882) internal successors, (77), 19 states have internal predecessors, (77), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) Word has length 147 [2021-12-16 03:22:10,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:22:10,865 INFO L225 Difference]: With dead ends: 392 [2021-12-16 03:22:10,865 INFO L226 Difference]: Without dead ends: 203 [2021-12-16 03:22:10,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2021-12-16 03:22:10,866 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 31 mSDsluCounter, 2170 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 2414 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 03:22:10,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 2414 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 03:22:10,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-12-16 03:22:10,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 202. [2021-12-16 03:22:10,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 131 states have (on average 1.2061068702290076) internal successors, (158), 134 states have internal predecessors, (158), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2021-12-16 03:22:10,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 264 transitions. [2021-12-16 03:22:10,872 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 264 transitions. Word has length 147 [2021-12-16 03:22:10,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:22:10,873 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 264 transitions. [2021-12-16 03:22:10,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 4.529411764705882) internal successors, (77), 19 states have internal predecessors, (77), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2021-12-16 03:22:10,873 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 264 transitions. [2021-12-16 03:22:10,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-16 03:22:10,874 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:22:10,874 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:22:10,897 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-16 03:22:11,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:22:11,092 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:22:11,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:22:11,092 INFO L85 PathProgramCache]: Analyzing trace with hash 579206582, now seen corresponding path program 4 times [2021-12-16 03:22:11,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:22:11,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171646137] [2021-12-16 03:22:11,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:22:11,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:22:11,138 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:22:11,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1721924371] [2021-12-16 03:22:11,139 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-16 03:22:11,139 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:22:11,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:22:11,140 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) [2021-12-16 03:22:11,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-16 03:22:11,808 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-16 03:22:11,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 03:22:11,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 2531 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-16 03:22:11,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:22:12,095 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 9 proven. 63 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-12-16 03:22:12,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:22:12,596 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 50 proven. 16 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2021-12-16 03:22:12,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:22:12,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171646137] [2021-12-16 03:22:12,596 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:22:12,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721924371] [2021-12-16 03:22:12,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721924371] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 03:22:12,596 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 03:22:12,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 21 [2021-12-16 03:22:12,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557578964] [2021-12-16 03:22:12,597 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 03:22:12,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-16 03:22:12,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:22:12,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-16 03:22:12,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2021-12-16 03:22:12,598 INFO L87 Difference]: Start difference. First operand 202 states and 264 transitions. Second operand has 21 states, 19 states have (on average 4.684210526315789) internal successors, (89), 21 states have internal predecessors, (89), 6 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (28), 7 states have call predecessors, (28), 6 states have call successors, (28) [2021-12-16 03:22:12,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:22:12,888 INFO L93 Difference]: Finished difference Result 396 states and 512 transitions. [2021-12-16 03:22:12,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 03:22:12,889 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 4.684210526315789) internal successors, (89), 21 states have internal predecessors, (89), 6 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (28), 7 states have call predecessors, (28), 6 states have call successors, (28) Word has length 151 [2021-12-16 03:22:12,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:22:12,890 INFO L225 Difference]: With dead ends: 396 [2021-12-16 03:22:12,890 INFO L226 Difference]: Without dead ends: 205 [2021-12-16 03:22:12,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=760, Unknown=0, NotChecked=0, Total=930 [2021-12-16 03:22:12,891 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 43 mSDsluCounter, 2412 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 2655 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:22:12,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 2655 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:22:12,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-12-16 03:22:12,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 204. [2021-12-16 03:22:12,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 133 states have (on average 1.2030075187969924) internal successors, (160), 136 states have internal predecessors, (160), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2021-12-16 03:22:12,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 266 transitions. [2021-12-16 03:22:12,898 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 266 transitions. Word has length 151 [2021-12-16 03:22:12,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:22:12,898 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 266 transitions. [2021-12-16 03:22:12,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 4.684210526315789) internal successors, (89), 21 states have internal predecessors, (89), 6 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (28), 7 states have call predecessors, (28), 6 states have call successors, (28) [2021-12-16 03:22:12,898 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 266 transitions. [2021-12-16 03:22:12,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-16 03:22:12,899 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:22:12,899 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:22:12,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-16 03:22:13,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-12-16 03:22:13,120 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:22:13,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:22:13,120 INFO L85 PathProgramCache]: Analyzing trace with hash -519410314, now seen corresponding path program 5 times [2021-12-16 03:22:13,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:22:13,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674581955] [2021-12-16 03:22:13,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:22:13,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:22:13,176 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:22:13,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [986610317] [2021-12-16 03:22:13,176 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-16 03:22:13,176 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:22:13,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:22:13,178 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) [2021-12-16 03:22:13,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-16 03:22:13,844 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-12-16 03:22:13,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 03:22:13,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-16 03:22:13,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:22:14,183 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 209 proven. 25 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2021-12-16 03:22:14,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:22:15,005 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-12-16 03:22:15,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:22:15,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674581955] [2021-12-16 03:22:15,005 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:22:15,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986610317] [2021-12-16 03:22:15,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986610317] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 03:22:15,006 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 03:22:15,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2021-12-16 03:22:15,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042311196] [2021-12-16 03:22:15,006 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 03:22:15,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-16 03:22:15,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:22:15,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-16 03:22:15,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2021-12-16 03:22:15,008 INFO L87 Difference]: Start difference. First operand 204 states and 266 transitions. Second operand has 25 states, 23 states have (on average 4.260869565217392) internal successors, (98), 25 states have internal predecessors, (98), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2021-12-16 03:22:15,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:22:15,540 INFO L93 Difference]: Finished difference Result 400 states and 516 transitions. [2021-12-16 03:22:15,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-16 03:22:15,543 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 4.260869565217392) internal successors, (98), 25 states have internal predecessors, (98), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) Word has length 155 [2021-12-16 03:22:15,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:22:15,544 INFO L225 Difference]: With dead ends: 400 [2021-12-16 03:22:15,544 INFO L226 Difference]: Without dead ends: 207 [2021-12-16 03:22:15,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=154, Invalid=838, Unknown=0, NotChecked=0, Total=992 [2021-12-16 03:22:15,546 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 40 mSDsluCounter, 3392 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 3637 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 03:22:15,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 3637 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 03:22:15,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-12-16 03:22:15,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 206. [2021-12-16 03:22:15,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 135 states have (on average 1.2) internal successors, (162), 138 states have internal predecessors, (162), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2021-12-16 03:22:15,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 268 transitions. [2021-12-16 03:22:15,552 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 268 transitions. Word has length 155 [2021-12-16 03:22:15,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:22:15,552 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 268 transitions. [2021-12-16 03:22:15,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 4.260869565217392) internal successors, (98), 25 states have internal predecessors, (98), 6 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (32), 6 states have call predecessors, (32), 6 states have call successors, (32) [2021-12-16 03:22:15,552 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 268 transitions. [2021-12-16 03:22:15,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-12-16 03:22:15,553 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:22:15,554 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:22:15,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-16 03:22:15,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:22:15,760 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:22:15,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:22:15,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1604701238, now seen corresponding path program 6 times [2021-12-16 03:22:15,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:22:15,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600891972] [2021-12-16 03:22:15,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:22:15,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:22:15,803 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:22:15,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [388765584] [2021-12-16 03:22:15,804 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-16 03:22:15,804 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:22:15,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:22:15,805 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) [2021-12-16 03:22:15,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process