./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 839c364b 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 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:07:57,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:07:57,658 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:07:57,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:07:57,695 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:07:57,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:07:57,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:07:57,701 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:07:57,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:07:57,706 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:07:57,706 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:07:57,707 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:07:57,708 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:07:57,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:07:57,711 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:07:57,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:07:57,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:07:57,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:07:57,718 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:07:57,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:07:57,723 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:07:57,724 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:07:57,725 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:07:57,725 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:07:57,730 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:07:57,730 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:07:57,730 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:07:57,732 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:07:57,732 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:07:57,733 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:07:57,733 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:07:57,734 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:07:57,736 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:07:57,737 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:07:57,739 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:07:57,739 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:07:57,740 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:07:57,740 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:07:57,740 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:07:57,740 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:07:57,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:07:57,742 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:07:57,770 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:07:57,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:07:57,771 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:07:57,771 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:07:57,772 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:07:57,772 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:07:57,772 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:07:57,773 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:07:57,773 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:07:57,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:07:57,774 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:07:57,774 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:07:57,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:07:57,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:07:57,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:07:57,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:07:57,774 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:07:57,775 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:07:57,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:07:57,775 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:07:57,775 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:07:57,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:07:57,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:07:57,776 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:07:57,776 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:07:57,776 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:07:57,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:07:57,776 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:07:57,776 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:07:57,776 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:07:57,777 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:07:57,777 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd704c0997d5526a33ae946f9f6b6d8e05b412ad44e87cb653981b428eeb987a [2021-12-14 17:07:57,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:07:57,975 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:07:57,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:07:57,978 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:07:57,979 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:07:57,980 INFO L432 ainManager$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 [2021-12-14 17:07:58,027 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b3cb3d9b/c582e866f71b448d970de08bddc1ca6c/FLAG923c1ce62 [2021-12-14 17:07:58,659 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:07:58,660 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i [2021-12-14 17:07:58,687 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b3cb3d9b/c582e866f71b448d970de08bddc1ca6c/FLAG923c1ce62 [2021-12-14 17:07:59,054 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b3cb3d9b/c582e866f71b448d970de08bddc1ca6c [2021-12-14 17:07:59,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:07:59,056 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:07:59,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:07:59,059 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:07:59,062 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:07:59,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:07:59" (1/1) ... [2021-12-14 17:07:59,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@98f77df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:07:59, skipping insertion in model container [2021-12-14 17:07:59,064 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:07:59" (1/1) ... [2021-12-14 17:07:59,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:07:59,147 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:07:59,334 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] [2021-12-14 17:07:59,339 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] [2021-12-14 17:07:59,837 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-14 17:07:59,906 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:07:59,906 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:07:59,907 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:07:59,907 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:07:59,909 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:07:59,922 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:07:59,923 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:07:59,924 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:07:59,924 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:00,110 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-14 17:08:00,111 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-14 17:08:00,112 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-14 17:08:00,113 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-14 17:08:00,114 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-14 17:08:00,114 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-14 17:08:00,115 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-14 17:08:00,115 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-14 17:08:00,115 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-14 17:08:00,116 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-14 17:08:00,214 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:00,219 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:00,249 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:08:00,272 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:08:00,334 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] [2021-12-14 17:08:00,335 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] [2021-12-14 17:08:00,353 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-14 17:08:00,361 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:00,361 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:00,361 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:00,362 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:00,362 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:00,366 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:00,366 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:00,367 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:00,367 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:00,393 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-14 17:08:00,393 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-14 17:08:00,394 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-14 17:08:00,394 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-14 17:08:00,395 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-14 17:08:00,395 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-14 17:08:00,395 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-14 17:08:00,396 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-14 17:08:00,398 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-14 17:08:00,398 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-14 17:08:00,415 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:00,416 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:00,428 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:08:00,562 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:08:00,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:00 WrapperNode [2021-12-14 17:08:00,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:08:00,564 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:08:00,564 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:08:00,564 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:08:00,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:00" (1/1) ... [2021-12-14 17:08:00,639 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:00" (1/1) ... [2021-12-14 17:08:00,697 INFO L137 Inliner]: procedures = 689, calls = 1514, calls flagged for inlining = 53, calls inlined = 9, statements flattened = 736 [2021-12-14 17:08:00,698 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:08:00,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:08:00,699 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:08:00,699 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:08:00,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:00" (1/1) ... [2021-12-14 17:08:00,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:00" (1/1) ... [2021-12-14 17:08:00,714 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:00" (1/1) ... [2021-12-14 17:08:00,715 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:00" (1/1) ... [2021-12-14 17:08:00,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:00" (1/1) ... [2021-12-14 17:08:00,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:00" (1/1) ... [2021-12-14 17:08:00,753 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:00" (1/1) ... [2021-12-14 17:08:00,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:08:00,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:08:00,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:08:00,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:08:00,769 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:00" (1/1) ... [2021-12-14 17:08:00,773 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:08:00,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:08:00,805 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) [2021-12-14 17:08:00,818 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 [2021-12-14 17:08:00,839 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-12-14 17:08:00,840 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-12-14 17:08:00,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:08:00,840 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-12-14 17:08:00,840 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-12-14 17:08:00,841 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-14 17:08:00,841 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-14 17:08:00,842 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-12-14 17:08:00,842 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-12-14 17:08:00,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:08:00,843 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-14 17:08:00,843 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-14 17:08:00,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-14 17:08:00,844 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-14 17:08:00,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:08:00,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:08:00,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:08:00,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:08:00,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:08:00,845 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-14 17:08:00,845 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-14 17:08:00,845 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-14 17:08:00,845 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-14 17:08:00,845 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-12-14 17:08:00,846 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-12-14 17:08:00,846 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-12-14 17:08:00,846 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-12-14 17:08:00,846 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 17:08:00,846 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 17:08:00,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:08:00,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:08:00,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:08:00,847 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-14 17:08:00,847 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-14 17:08:00,847 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-14 17:08:00,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-14 17:08:00,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:08:00,848 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2021-12-14 17:08:00,848 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2021-12-14 17:08:00,848 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2021-12-14 17:08:00,848 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2021-12-14 17:08:00,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:08:01,086 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:08:01,087 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:08:01,602 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:08:01,611 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:08:01,612 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-12-14 17:08:01,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:08:01 BoogieIcfgContainer [2021-12-14 17:08:01,614 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:08:01,615 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:08:01,615 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:08:01,617 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:08:01,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:07:59" (1/3) ... [2021-12-14 17:08:01,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@682ce775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:08:01, skipping insertion in model container [2021-12-14 17:08:01,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:00" (2/3) ... [2021-12-14 17:08:01,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@682ce775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:08:01, skipping insertion in model container [2021-12-14 17:08:01,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:08:01" (3/3) ... [2021-12-14 17:08:01,620 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_init_dynamic_harness.i [2021-12-14 17:08:01,623 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:08:01,623 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:08:01,669 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:08:01,673 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 [2021-12-14 17:08:01,674 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:08:01,701 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) [2021-12-14 17:08:01,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-14 17:08:01,708 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:08:01,708 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] [2021-12-14 17:08:01,709 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:08:01,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:08:01,713 INFO L85 PathProgramCache]: Analyzing trace with hash -657799819, now seen corresponding path program 1 times [2021-12-14 17:08:01,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:08:01,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606038312] [2021-12-14 17:08:01,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:08:01,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:08:02,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:02,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:08:02,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:02,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:08:02,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:02,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:08:02,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:02,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 17:08:02,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:08:02,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606038312] [2021-12-14 17:08:02,181 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-12-14 17:08:02,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017960760] [2021-12-14 17:08:02,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:08:02,182 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:08:02,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:08:02,184 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) [2021-12-14 17:08:02,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 17:08:02,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:02,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 2206 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-14 17:08:02,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:08:02,730 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-12-14 17:08:02,730 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:08:02,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017960760] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:08:02,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:08:02,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 17:08:02,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549905067] [2021-12-14 17:08:02,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:08:02,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 17:08:02,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:08:02,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 17:08:02,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:08:02,755 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) [2021-12-14 17:08:02,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:08:02,784 INFO L93 Difference]: Finished difference Result 389 states and 571 transitions. [2021-12-14 17:08:02,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 17:08:02,786 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 [2021-12-14 17:08:02,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:08:02,792 INFO L225 Difference]: With dead ends: 389 [2021-12-14 17:08:02,792 INFO L226 Difference]: Without dead ends: 190 [2021-12-14 17:08:02,795 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 [2021-12-14 17:08:02,797 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 [2021-12-14 17:08:02,798 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] [2021-12-14 17:08:02,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-12-14 17:08:02,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2021-12-14 17:08:02,829 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) [2021-12-14 17:08:02,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 253 transitions. [2021-12-14 17:08:02,832 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 253 transitions. Word has length 99 [2021-12-14 17:08:02,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:08:02,833 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 253 transitions. [2021-12-14 17:08:02,833 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) [2021-12-14 17:08:02,834 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 253 transitions. [2021-12-14 17:08:02,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-14 17:08:02,836 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:08:02,837 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] [2021-12-14 17:08:02,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-14 17:08:03,055 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 [2021-12-14 17:08:03,056 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:08:03,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:08:03,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1585195372, now seen corresponding path program 1 times [2021-12-14 17:08:03,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:08:03,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303183816] [2021-12-14 17:08:03,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:08:03,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:08:03,111 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 17:08:03,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1407265121] [2021-12-14 17:08:03,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:08:03,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:08:03,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:08:03,128 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) [2021-12-14 17:08:03,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-14 17:08:03,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:03,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 2360 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-14 17:08:03,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:08:03,725 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2021-12-14 17:08:03,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:08:03,999 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2021-12-14 17:08:03,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:08:03,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303183816] [2021-12-14 17:08:03,999 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 17:08:03,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407265121] [2021-12-14 17:08:03,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407265121] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-14 17:08:03,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:08:04,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 12 [2021-12-14 17:08:04,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785011915] [2021-12-14 17:08:04,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:08:04,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:08:04,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:08:04,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:08:04,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-14 17:08:04,001 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) [2021-12-14 17:08:04,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:08:04,076 INFO L93 Difference]: Finished difference Result 198 states and 261 transitions. [2021-12-14 17:08:04,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 17:08:04,077 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 [2021-12-14 17:08:04,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:08:04,079 INFO L225 Difference]: With dead ends: 198 [2021-12-14 17:08:04,079 INFO L226 Difference]: Without dead ends: 196 [2021-12-14 17:08:04,079 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 [2021-12-14 17:08:04,080 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 [2021-12-14 17:08:04,081 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] [2021-12-14 17:08:04,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-12-14 17:08:04,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 195. [2021-12-14 17:08:04,091 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) [2021-12-14 17:08:04,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 258 transitions. [2021-12-14 17:08:04,092 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 258 transitions. Word has length 133 [2021-12-14 17:08:04,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:08:04,093 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 258 transitions. [2021-12-14 17:08:04,093 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) [2021-12-14 17:08:04,093 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 258 transitions. [2021-12-14 17:08:04,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-14 17:08:04,094 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:08:04,094 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] [2021-12-14 17:08:04,129 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-14 17:08:04,330 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 [2021-12-14 17:08:04,331 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:08:04,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:08:04,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1587042414, now seen corresponding path program 1 times [2021-12-14 17:08:04,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:08:04,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772516637] [2021-12-14 17:08:04,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:08:04,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:08:04,369 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 17:08:04,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1332441813] [2021-12-14 17:08:04,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:08:04,369 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:08:04,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:08:04,371 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) [2021-12-14 17:08:04,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-14 17:08:04,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:04,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 2365 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-14 17:08:04,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:08:04,863 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-14 17:08:04,863 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:08:04,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:08:04,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772516637] [2021-12-14 17:08:04,864 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 17:08:04,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332441813] [2021-12-14 17:08:04,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332441813] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:08:04,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:08:04,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 17:08:04,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399435864] [2021-12-14 17:08:04,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:08:04,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:08:04,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:08:04,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:08:04,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:08:04,866 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) [2021-12-14 17:08:04,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:08:04,910 INFO L93 Difference]: Finished difference Result 379 states and 496 transitions. [2021-12-14 17:08:04,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 17:08:04,910 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 [2021-12-14 17:08:04,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:08:04,913 INFO L225 Difference]: With dead ends: 379 [2021-12-14 17:08:04,913 INFO L226 Difference]: Without dead ends: 195 [2021-12-14 17:08:04,914 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 [2021-12-14 17:08:04,915 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 [2021-12-14 17:08:04,915 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] [2021-12-14 17:08:04,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-12-14 17:08:04,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2021-12-14 17:08:04,943 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) [2021-12-14 17:08:04,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 257 transitions. [2021-12-14 17:08:04,945 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 257 transitions. Word has length 133 [2021-12-14 17:08:04,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:08:04,945 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 257 transitions. [2021-12-14 17:08:04,946 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) [2021-12-14 17:08:04,946 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 257 transitions. [2021-12-14 17:08:04,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-14 17:08:04,947 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:08:04,947 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] [2021-12-14 17:08:04,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-14 17:08:05,163 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 [2021-12-14 17:08:05,164 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:08:05,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:08:05,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1650813770, now seen corresponding path program 1 times [2021-12-14 17:08:05,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:08:05,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300208493] [2021-12-14 17:08:05,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:08:05,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:08:05,213 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 17:08:05,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1175297324] [2021-12-14 17:08:05,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:08:05,214 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:08:05,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:08:05,215 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) [2021-12-14 17:08:05,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-14 17:08:05,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:05,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 2379 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-14 17:08:05,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:08:05,740 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-14 17:08:05,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:08:05,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:08:05,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300208493] [2021-12-14 17:08:05,741 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 17:08:05,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175297324] [2021-12-14 17:08:05,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175297324] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:08:05,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:08:05,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 17:08:05,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136159544] [2021-12-14 17:08:05,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:08:05,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 17:08:05,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:08:05,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 17:08:05,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:08:05,744 INFO L87 Difference]: Start difference. First operand 195 states and 257 transitions. Second operand has 7 states, 6 states have (on average 10.0) internal successors, (60), 7 states have internal predecessors, (60), 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) [2021-12-14 17:08:05,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:08:05,797 INFO L93 Difference]: Finished difference Result 381 states and 497 transitions. [2021-12-14 17:08:05,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:08:05,797 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.0) internal successors, (60), 7 states have internal predecessors, (60), 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 135 [2021-12-14 17:08:05,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:08:05,799 INFO L225 Difference]: With dead ends: 381 [2021-12-14 17:08:05,799 INFO L226 Difference]: Without dead ends: 197 [2021-12-14 17:08:05,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-14 17:08:05,800 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 18 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:08:05,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 1211 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:08:05,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-12-14 17:08:05,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 196. [2021-12-14 17:08:05,807 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) [2021-12-14 17:08:05,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 258 transitions. [2021-12-14 17:08:05,808 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 258 transitions. Word has length 135 [2021-12-14 17:08:05,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:08:05,808 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 258 transitions. [2021-12-14 17:08:05,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.0) internal successors, (60), 7 states have internal predecessors, (60), 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) [2021-12-14 17:08:05,809 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 258 transitions. [2021-12-14 17:08:05,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-14 17:08:05,810 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:08:05,810 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] [2021-12-14 17:08:05,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-14 17:08:06,031 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 [2021-12-14 17:08:06,031 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:08:06,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:08:06,032 INFO L85 PathProgramCache]: Analyzing trace with hash 574277750, now seen corresponding path program 1 times [2021-12-14 17:08:06,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:08:06,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596274112] [2021-12-14 17:08:06,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:08:06,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:08:06,071 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 17:08:06,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [599430550] [2021-12-14 17:08:06,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:08:06,087 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:08:06,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:08:06,088 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) [2021-12-14 17:08:06,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-14 17:08:06,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:06,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 2417 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-14 17:08:06,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:08:06,722 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 153 proven. 1 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2021-12-14 17:08:06,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:08:07,203 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-12-14 17:08:07,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:08:07,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596274112] [2021-12-14 17:08:07,204 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 17:08:07,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599430550] [2021-12-14 17:08:07,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599430550] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 17:08:07,205 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-14 17:08:07,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-12-14 17:08:07,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671272115] [2021-12-14 17:08:07,205 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-14 17:08:07,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-14 17:08:07,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:08:07,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-14 17:08:07,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-12-14 17:08:07,207 INFO L87 Difference]: Start difference. First operand 196 states and 258 transitions. Second operand has 13 states, 11 states have (on average 7.454545454545454) internal successors, (82), 13 states have internal predecessors, (82), 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) [2021-12-14 17:08:07,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:08:07,331 INFO L93 Difference]: Finished difference Result 384 states and 500 transitions. [2021-12-14 17:08:07,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 17:08:07,332 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 7.454545454545454) internal successors, (82), 13 states have internal predecessors, (82), 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 139 [2021-12-14 17:08:07,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:08:07,333 INFO L225 Difference]: With dead ends: 384 [2021-12-14 17:08:07,333 INFO L226 Difference]: Without dead ends: 199 [2021-12-14 17:08:07,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-12-14 17:08:07,334 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 35 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:08:07,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 1219 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 17:08:07,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-12-14 17:08:07,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 198. [2021-12-14 17:08:07,340 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) [2021-12-14 17:08:07,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 260 transitions. [2021-12-14 17:08:07,341 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 260 transitions. Word has length 139 [2021-12-14 17:08:07,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:08:07,342 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 260 transitions. [2021-12-14 17:08:07,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 7.454545454545454) internal successors, (82), 13 states have internal predecessors, (82), 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) [2021-12-14 17:08:07,342 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 260 transitions. [2021-12-14 17:08:07,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-14 17:08:07,343 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:08:07,343 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] [2021-12-14 17:08:07,367 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-14 17:08:07,559 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 [2021-12-14 17:08:07,559 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:08:07,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:08:07,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1733366986, now seen corresponding path program 2 times [2021-12-14 17:08:07,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:08:07,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40220751] [2021-12-14 17:08:07,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:08:07,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:08:07,613 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 17:08:07,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2134227345] [2021-12-14 17:08:07,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-14 17:08:07,614 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:08:07,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:08:07,615 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) [2021-12-14 17:08:07,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-14 17:08:08,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-14 17:08:08,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 17:08:08,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 2455 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-14 17:08:08,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:08:08,656 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2021-12-14 17:08:08,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:08:09,092 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 22 proven. 4 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2021-12-14 17:08:09,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:08:09,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40220751] [2021-12-14 17:08:09,093 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 17:08:09,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134227345] [2021-12-14 17:08:09,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134227345] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 17:08:09,093 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-14 17:08:09,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-12-14 17:08:09,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630919236] [2021-12-14 17:08:09,094 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-14 17:08:09,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-14 17:08:09,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:08:09,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-14 17:08:09,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-12-14 17:08:09,095 INFO L87 Difference]: Start difference. First operand 198 states and 260 transitions. Second operand has 17 states, 15 states have (on average 5.333333333333333) internal successors, (80), 17 states have internal predecessors, (80), 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) [2021-12-14 17:08:09,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:08:09,281 INFO L93 Difference]: Finished difference Result 388 states and 504 transitions. [2021-12-14 17:08:09,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 17:08:09,282 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 5.333333333333333) internal successors, (80), 17 states have internal predecessors, (80), 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 143 [2021-12-14 17:08:09,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:08:09,283 INFO L225 Difference]: With dead ends: 388 [2021-12-14 17:08:09,284 INFO L226 Difference]: Without dead ends: 201 [2021-12-14 17:08:09,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2021-12-14 17:08:09,285 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 35 mSDsluCounter, 2643 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2886 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:08:09,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 2886 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 17:08:09,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-12-14 17:08:09,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 200. [2021-12-14 17:08:09,295 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) [2021-12-14 17:08:09,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 262 transitions. [2021-12-14 17:08:09,297 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 262 transitions. Word has length 143 [2021-12-14 17:08:09,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:08:09,298 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 262 transitions. [2021-12-14 17:08:09,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 5.333333333333333) internal successors, (80), 17 states have internal predecessors, (80), 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) [2021-12-14 17:08:09,299 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 262 transitions. [2021-12-14 17:08:09,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-14 17:08:09,300 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:08:09,300 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] [2021-12-14 17:08:09,324 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-14 17:08:09,500 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 [2021-12-14 17:08:09,501 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:08:09,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:08:09,501 INFO L85 PathProgramCache]: Analyzing trace with hash 833600758, now seen corresponding path program 3 times [2021-12-14 17:08:09,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:08:09,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732583104] [2021-12-14 17:08:09,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:08:09,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:08:09,554 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 17:08:09,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1783339708] [2021-12-14 17:08:09,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-14 17:08:09,554 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:08:09,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:08:09,560 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) [2021-12-14 17:08:09,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-14 17:08:11,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-14 17:08:11,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 17:08:11,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 2081 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-14 17:08:11,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:08:12,169 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 43 proven. 9 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2021-12-14 17:08:12,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:08:12,658 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 34 proven. 9 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2021-12-14 17:08:12,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:08:12,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732583104] [2021-12-14 17:08:12,659 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 17:08:12,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783339708] [2021-12-14 17:08:12,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783339708] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 17:08:12,659 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-14 17:08:12,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-12-14 17:08:12,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411556486] [2021-12-14 17:08:12,659 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-14 17:08:12,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-14 17:08:12,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:08:12,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-14 17:08:12,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-12-14 17:08:12,661 INFO L87 Difference]: Start difference. First operand 200 states and 262 transitions. Second operand has 17 states, 15 states have (on average 5.133333333333334) internal successors, (77), 17 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) [2021-12-14 17:08:12,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:08:12,838 INFO L93 Difference]: Finished difference Result 392 states and 508 transitions. [2021-12-14 17:08:12,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 17:08:12,839 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 5.133333333333334) internal successors, (77), 17 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 [2021-12-14 17:08:12,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:08:12,841 INFO L225 Difference]: With dead ends: 392 [2021-12-14 17:08:12,841 INFO L226 Difference]: Without dead ends: 203 [2021-12-14 17:08:12,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2021-12-14 17:08:12,844 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 37 mSDsluCounter, 1938 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 2183 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:08:12,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 2183 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 17:08:12,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-12-14 17:08:12,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 202. [2021-12-14 17:08:12,854 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) [2021-12-14 17:08:12,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 264 transitions. [2021-12-14 17:08:12,855 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 264 transitions. Word has length 147 [2021-12-14 17:08:12,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:08:12,856 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 264 transitions. [2021-12-14 17:08:12,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 5.133333333333334) internal successors, (77), 17 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) [2021-12-14 17:08:12,856 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 264 transitions. [2021-12-14 17:08:12,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-14 17:08:12,857 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:08:12,857 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] [2021-12-14 17:08:12,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-14 17:08:13,066 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 [2021-12-14 17:08:13,066 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:08:13,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:08:13,067 INFO L85 PathProgramCache]: Analyzing trace with hash 579206582, now seen corresponding path program 4 times [2021-12-14 17:08:13,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:08:13,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101001890] [2021-12-14 17:08:13,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:08:13,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:08:13,135 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 17:08:13,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [523109264] [2021-12-14 17:08:13,135 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-14 17:08:13,135 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:08:13,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:08:13,136 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) [2021-12-14 17:08:13,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-14 17:08:13,672 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-14 17:08:13,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 17:08:13,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 2531 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-14 17:08:13,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:08:13,987 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 189 proven. 16 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-12-14 17:08:13,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:08:14,481 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2021-12-14 17:08:14,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:08:14,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101001890] [2021-12-14 17:08:14,481 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 17:08:14,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523109264] [2021-12-14 17:08:14,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523109264] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 17:08:14,482 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-14 17:08:14,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-12-14 17:08:14,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767635768] [2021-12-14 17:08:14,482 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-14 17:08:14,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-14 17:08:14,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:08:14,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-14 17:08:14,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2021-12-14 17:08:14,483 INFO L87 Difference]: Start difference. First operand 202 states and 264 transitions. Second operand has 19 states, 17 states have (on average 5.529411764705882) internal successors, (94), 19 states have internal predecessors, (94), 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) [2021-12-14 17:08:14,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:08:14,659 INFO L93 Difference]: Finished difference Result 396 states and 512 transitions. [2021-12-14 17:08:14,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 17:08:14,660 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 5.529411764705882) internal successors, (94), 19 states have internal predecessors, (94), 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 151 [2021-12-14 17:08:14,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:08:14,661 INFO L225 Difference]: With dead ends: 396 [2021-12-14 17:08:14,661 INFO L226 Difference]: Without dead ends: 205 [2021-12-14 17:08:14,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-12-14 17:08:14,662 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 46 mSDsluCounter, 1702 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 1947 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:08:14,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 1947 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 17:08:14,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-12-14 17:08:14,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 204. [2021-12-14 17:08:14,668 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) [2021-12-14 17:08:14,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 266 transitions. [2021-12-14 17:08:14,669 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 266 transitions. Word has length 151 [2021-12-14 17:08:14,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:08:14,669 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 266 transitions. [2021-12-14 17:08:14,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 5.529411764705882) internal successors, (94), 19 states have internal predecessors, (94), 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) [2021-12-14 17:08:14,670 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 266 transitions. [2021-12-14 17:08:14,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-14 17:08:14,671 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:08:14,671 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] [2021-12-14 17:08:14,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-14 17:08:14,887 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 [2021-12-14 17:08:14,887 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:08:14,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:08:14,888 INFO L85 PathProgramCache]: Analyzing trace with hash -519410314, now seen corresponding path program 5 times [2021-12-14 17:08:14,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:08:14,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644609298] [2021-12-14 17:08:14,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:08:14,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:08:14,926 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 17:08:14,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [838140123] [2021-12-14 17:08:14,927 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-14 17:08:14,927 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:08:14,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:08:14,928 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) [2021-12-14 17:08:14,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-14 17:08:16,083 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-12-14 17:08:16,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 17:08:16,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-14 17:08:16,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:08:16,406 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 209 proven. 25 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2021-12-14 17:08:16,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:08:16,929 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-12-14 17:08:16,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:08:16,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644609298] [2021-12-14 17:08:16,929 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 17:08:16,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838140123] [2021-12-14 17:08:16,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838140123] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 17:08:16,930 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-14 17:08:16,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-12-14 17:08:16,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219220911] [2021-12-14 17:08:16,930 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-14 17:08:16,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-14 17:08:16,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:08:16,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-14 17:08:16,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2021-12-14 17:08:16,932 INFO L87 Difference]: Start difference. First operand 204 states and 266 transitions. Second operand has 21 states, 19 states have (on average 5.157894736842105) internal successors, (98), 21 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) [2021-12-14 17:08:17,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:08:17,123 INFO L93 Difference]: Finished difference Result 400 states and 516 transitions. [2021-12-14 17:08:17,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-14 17:08:17,124 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 5.157894736842105) internal successors, (98), 21 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 [2021-12-14 17:08:17,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:08:17,125 INFO L225 Difference]: With dead ends: 400 [2021-12-14 17:08:17,125 INFO L226 Difference]: Without dead ends: 207 [2021-12-14 17:08:17,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2021-12-14 17:08:17,126 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 45 mSDsluCounter, 2184 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 2429 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:08:17,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 2429 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 17:08:17,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-12-14 17:08:17,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 206. [2021-12-14 17:08:17,131 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) [2021-12-14 17:08:17,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 268 transitions. [2021-12-14 17:08:17,132 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 268 transitions. Word has length 155 [2021-12-14 17:08:17,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:08:17,133 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 268 transitions. [2021-12-14 17:08:17,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 5.157894736842105) internal successors, (98), 21 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) [2021-12-14 17:08:17,133 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 268 transitions. [2021-12-14 17:08:17,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-12-14 17:08:17,134 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:08:17,134 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] [2021-12-14 17:08:17,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-14 17:08:17,334 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 [2021-12-14 17:08:17,334 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:08:17,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:08:17,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1604701238, now seen corresponding path program 6 times [2021-12-14 17:08:17,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:08:17,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255204774] [2021-12-14 17:08:17,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:08:17,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:08:17,372 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 17:08:17,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2031811843] [2021-12-14 17:08:17,373 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-14 17:08:17,373 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:08:17,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:08:17,374 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) [2021-12-14 17:08:17,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process