./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_capacity_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 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_capacity_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 b8e2b19500a9ff32f182f41fca1db48d6268985503aaacd0cb9efdaafa7d6419 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 13:27:32,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 13:27:32,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 13:27:32,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 13:27:32,507 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 13:27:32,508 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 13:27:32,509 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 13:27:32,510 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 13:27:32,511 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 13:27:32,512 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 13:27:32,512 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 13:27:32,513 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 13:27:32,513 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 13:27:32,514 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 13:27:32,514 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 13:27:32,515 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 13:27:32,516 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 13:27:32,516 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 13:27:32,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 13:27:32,518 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 13:27:32,519 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 13:27:32,520 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 13:27:32,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 13:27:32,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 13:27:32,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 13:27:32,529 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 13:27:32,529 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 13:27:32,530 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 13:27:32,532 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 13:27:32,532 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 13:27:32,533 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 13:27:32,533 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 13:27:32,534 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 13:27:32,535 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 13:27:32,535 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 13:27:32,536 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 13:27:32,536 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 13:27:32,537 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 13:27:32,537 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 13:27:32,537 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 13:27:32,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 13:27:32,539 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 13:27:32,558 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 13:27:32,558 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 13:27:32,559 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 13:27:32,559 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 13:27:32,560 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 13:27:32,560 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 13:27:32,560 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 13:27:32,561 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 13:27:32,561 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 13:27:32,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 13:27:32,561 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 13:27:32,562 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 13:27:32,562 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 13:27:32,562 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 13:27:32,562 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 13:27:32,562 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 13:27:32,562 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 13:27:32,562 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 13:27:32,563 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 13:27:32,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 13:27:32,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 13:27:32,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 13:27:32,563 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 13:27:32,563 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 13:27:32,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 13:27:32,568 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 13:27:32,568 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 13:27:32,568 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 13:27:32,568 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 13:27:32,568 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8e2b19500a9ff32f182f41fca1db48d6268985503aaacd0cb9efdaafa7d6419 [2021-11-05 13:27:32,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 13:27:32,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 13:27:32,866 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 13:27:32,867 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 13:27:32,868 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 13:27:32,869 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_capacity_harness.i [2021-11-05 13:27:32,920 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f3c9053c/f5ede9743502416f9429e0b5db078837/FLAG891d24da8 [2021-11-05 13:27:33,488 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 13:27:33,488 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_capacity_harness.i [2021-11-05 13:27:33,520 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f3c9053c/f5ede9743502416f9429e0b5db078837/FLAG891d24da8 [2021-11-05 13:27:33,949 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f3c9053c/f5ede9743502416f9429e0b5db078837 [2021-11-05 13:27:33,951 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 13:27:33,952 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 13:27:33,953 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 13:27:33,953 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 13:27:33,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 13:27:33,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 01:27:33" (1/1) ... [2021-11-05 13:27:33,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@169e77b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:27:33, skipping insertion in model container [2021-11-05 13:27:33,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 01:27:33" (1/1) ... [2021-11-05 13:27:33,960 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 13:27:34,026 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 13:27:34,184 WARN L228 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_capacity_harness.i[4501,4514] [2021-11-05 13:27:34,188 WARN L228 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_capacity_harness.i[4561,4574] [2021-11-05 13:27:34,202 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 13:27:34,204 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 13:27:34,536 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 13:27:34,595 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:27:34,599 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:27:34,601 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:27:34,602 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:27:34,603 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:27:34,617 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:27:34,617 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:27:34,618 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:27:34,619 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:27:34,798 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 13:27:34,799 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 13:27:34,799 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 13:27:34,800 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 13:27:34,801 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 13:27:34,801 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 13:27:34,801 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 13:27:34,802 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 13:27:34,802 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 13:27:34,802 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 13:27:34,906 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:27:34,907 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:27:34,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 13:27:34,975 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 13:27:34,990 WARN L228 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_capacity_harness.i[4501,4514] [2021-11-05 13:27:34,995 WARN L228 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_capacity_harness.i[4561,4574] [2021-11-05 13:27:34,996 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 13:27:34,998 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 13:27:35,045 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 13:27:35,058 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:27:35,066 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:27:35,066 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:27:35,067 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:27:35,068 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:27:35,074 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:27:35,074 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:27:35,075 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:27:35,075 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:27:35,104 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 13:27:35,105 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 13:27:35,105 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 13:27:35,106 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 13:27:35,106 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 13:27:35,107 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 13:27:35,107 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 13:27:35,107 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 13:27:35,108 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 13:27:35,109 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 13:27:35,135 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:27:35,142 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:27:35,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 13:27:35,334 INFO L208 MainTranslator]: Completed translation [2021-11-05 13:27:35,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:27:35 WrapperNode [2021-11-05 13:27:35,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 13:27:35,336 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 13:27:35,336 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 13:27:35,336 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 13:27:35,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:27:35" (1/1) ... [2021-11-05 13:27:35,438 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:27:35" (1/1) ... [2021-11-05 13:27:35,508 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 13:27:35,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 13:27:35,509 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 13:27:35,509 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 13:27:35,515 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:27:35" (1/1) ... [2021-11-05 13:27:35,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:27:35" (1/1) ... [2021-11-05 13:27:35,526 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:27:35" (1/1) ... [2021-11-05 13:27:35,526 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:27:35" (1/1) ... [2021-11-05 13:27:35,565 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:27:35" (1/1) ... [2021-11-05 13:27:35,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:27:35" (1/1) ... [2021-11-05 13:27:35,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:27:35" (1/1) ... [2021-11-05 13:27:35,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 13:27:35,607 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 13:27:35,607 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 13:27:35,607 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 13:27:35,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:27:35" (1/1) ... [2021-11-05 13:27:35,612 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 13:27:35,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:27:35,627 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-05 13:27:35,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-05 13:27:35,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 13:27:35,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 13:27:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 13:27:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 13:27:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 13:27:35,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 13:27:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 13:27:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-05 13:27:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 13:27:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 13:27:35,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 13:27:35,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 13:27:43,200 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 13:27:43,200 INFO L299 CfgBuilder]: Removed 192 assume(true) statements. [2021-11-05 13:27:43,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 01:27:43 BoogieIcfgContainer [2021-11-05 13:27:43,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 13:27:43,205 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 13:27:43,206 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 13:27:43,208 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 13:27:43,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 01:27:33" (1/3) ... [2021-11-05 13:27:43,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1c0d7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 01:27:43, skipping insertion in model container [2021-11-05 13:27:43,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:27:35" (2/3) ... [2021-11-05 13:27:43,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1c0d7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 01:27:43, skipping insertion in model container [2021-11-05 13:27:43,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 01:27:43" (3/3) ... [2021-11-05 13:27:43,209 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_capacity_harness.i [2021-11-05 13:27:43,213 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 13:27:43,213 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2021-11-05 13:27:43,254 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 13:27:43,263 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-05 13:27:43,264 INFO L340 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2021-11-05 13:27:43,282 INFO L276 IsEmpty]: Start isEmpty. Operand has 250 states, 234 states have (on average 1.4487179487179487) internal successors, (339), 249 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:43,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-05 13:27:43,288 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:27:43,289 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:27:43,289 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-05 13:27:43,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:27:43,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1889202216, now seen corresponding path program 1 times [2021-11-05 13:27:43,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:27:43,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013304298] [2021-11-05 13:27:43,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:27:43,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:27:43,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:27:43,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:27:43,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:27:43,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013304298] [2021-11-05 13:27:43,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013304298] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:27:43,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:27:43,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 13:27:43,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439748761] [2021-11-05 13:27:43,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:27:43,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 13:27:43,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:27:43,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 13:27:43,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 13:27:43,821 INFO L87 Difference]: Start difference. First operand has 250 states, 234 states have (on average 1.4487179487179487) internal successors, (339), 249 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:43,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:27:43,871 INFO L93 Difference]: Finished difference Result 494 states and 671 transitions. [2021-11-05 13:27:43,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 13:27:43,872 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-05 13:27:43,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:27:43,878 INFO L225 Difference]: With dead ends: 494 [2021-11-05 13:27:43,878 INFO L226 Difference]: Without dead ends: 243 [2021-11-05 13:27:43,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 13:27:43,883 INFO L933 BasicCegarLoop]: 311 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.30ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 13:27:43,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 4.30ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 13:27:43,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-11-05 13:27:43,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2021-11-05 13:27:43,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 228 states have (on average 1.3201754385964912) internal successors, (301), 242 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:43,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 301 transitions. [2021-11-05 13:27:43,915 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 301 transitions. Word has length 40 [2021-11-05 13:27:43,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:27:43,916 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 301 transitions. [2021-11-05 13:27:43,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:43,916 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 301 transitions. [2021-11-05 13:27:43,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-05 13:27:43,917 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:27:43,917 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:27:43,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 13:27:43,918 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-05 13:27:43,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:27:43,918 INFO L85 PathProgramCache]: Analyzing trace with hash -947073706, now seen corresponding path program 1 times [2021-11-05 13:27:43,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:27:43,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103632542] [2021-11-05 13:27:43,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:27:43,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:27:43,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:27:44,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:27:44,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:27:44,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103632542] [2021-11-05 13:27:44,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103632542] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:27:44,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:27:44,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:27:44,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723202303] [2021-11-05 13:27:44,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:27:44,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:27:44,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:27:44,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:27:44,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:27:44,152 INFO L87 Difference]: Start difference. First operand 243 states and 301 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:44,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:27:44,284 INFO L93 Difference]: Finished difference Result 406 states and 497 transitions. [2021-11-05 13:27:44,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 13:27:44,286 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-05 13:27:44,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:27:44,287 INFO L225 Difference]: With dead ends: 406 [2021-11-05 13:27:44,287 INFO L226 Difference]: Without dead ends: 243 [2021-11-05 13:27:44,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.78ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:27:44,288 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 537 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.52ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 85.17ms IncrementalHoareTripleChecker+Time [2021-11-05 13:27:44,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [537 Valid, 324 Invalid, 18 Unknown, 0 Unchecked, 3.52ms Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 85.17ms Time] [2021-11-05 13:27:44,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-11-05 13:27:44,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2021-11-05 13:27:44,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 228 states have (on average 1.3114035087719298) internal successors, (299), 242 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:44,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 299 transitions. [2021-11-05 13:27:44,298 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 299 transitions. Word has length 40 [2021-11-05 13:27:44,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:27:44,300 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 299 transitions. [2021-11-05 13:27:44,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:44,300 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 299 transitions. [2021-11-05 13:27:44,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-05 13:27:44,305 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:27:44,305 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:27:44,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 13:27:44,306 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-05 13:27:44,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:27:44,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1776399483, now seen corresponding path program 1 times [2021-11-05 13:27:44,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:27:44,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206992227] [2021-11-05 13:27:44,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:27:44,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:27:44,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:27:44,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:27:44,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:27:44,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206992227] [2021-11-05 13:27:44,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206992227] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:27:44,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:27:44,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 13:27:44,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76366501] [2021-11-05 13:27:44,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:27:44,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 13:27:44,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:27:44,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 13:27:44,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:27:44,585 INFO L87 Difference]: Start difference. First operand 243 states and 299 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:44,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:27:44,925 INFO L93 Difference]: Finished difference Result 521 states and 626 transitions. [2021-11-05 13:27:44,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 13:27:44,926 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-05 13:27:44,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:27:44,927 INFO L225 Difference]: With dead ends: 521 [2021-11-05 13:27:44,927 INFO L226 Difference]: Without dead ends: 326 [2021-11-05 13:27:44,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 110.39ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:27:44,928 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 706 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 229.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.76ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 258.89ms IncrementalHoareTripleChecker+Time [2021-11-05 13:27:44,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [706 Valid, 525 Invalid, 73 Unknown, 0 Unchecked, 3.76ms Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 258.89ms Time] [2021-11-05 13:27:44,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-11-05 13:27:44,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 243. [2021-11-05 13:27:44,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 228 states have (on average 1.3026315789473684) internal successors, (297), 242 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:44,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 297 transitions. [2021-11-05 13:27:44,947 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 297 transitions. Word has length 44 [2021-11-05 13:27:44,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:27:44,948 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 297 transitions. [2021-11-05 13:27:44,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:44,948 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 297 transitions. [2021-11-05 13:27:44,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-05 13:27:44,950 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:27:44,950 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:27:44,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 13:27:44,950 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-05 13:27:44,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:27:44,951 INFO L85 PathProgramCache]: Analyzing trace with hash 421587873, now seen corresponding path program 1 times [2021-11-05 13:27:44,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:27:44,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616423856] [2021-11-05 13:27:44,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:27:44,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:27:45,035 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:27:45,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1887771085] [2021-11-05 13:27:45,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:27:45,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:27:45,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:27:45,038 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:27:45,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 13:27:45,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:27:45,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 2577 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-05 13:27:45,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:27:46,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:27:46,103 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:27:46,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:27:46,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616423856] [2021-11-05 13:27:46,103 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:27:46,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887771085] [2021-11-05 13:27:46,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887771085] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:27:46,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:27:46,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 13:27:46,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087638893] [2021-11-05 13:27:46,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:27:46,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 13:27:46,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:27:46,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 13:27:46,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 13:27:46,134 INFO L87 Difference]: Start difference. First operand 243 states and 297 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:46,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:27:46,386 INFO L93 Difference]: Finished difference Result 407 states and 492 transitions. [2021-11-05 13:27:46,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 13:27:46,389 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-05 13:27:46,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:27:46,390 INFO L225 Difference]: With dead ends: 407 [2021-11-05 13:27:46,390 INFO L226 Difference]: Without dead ends: 243 [2021-11-05 13:27:46,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 148.37ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-05 13:27:46,391 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 1043 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 140.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1043 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.40ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 154.84ms IncrementalHoareTripleChecker+Time [2021-11-05 13:27:46,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1043 Valid, 345 Invalid, 57 Unknown, 0 Unchecked, 2.40ms Time], IncrementalHoareTripleChecker [9 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 154.84ms Time] [2021-11-05 13:27:46,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-11-05 13:27:46,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2021-11-05 13:27:46,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 228 states have (on average 1.293859649122807) internal successors, (295), 242 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:46,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 295 transitions. [2021-11-05 13:27:46,399 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 295 transitions. Word has length 52 [2021-11-05 13:27:46,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:27:46,399 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 295 transitions. [2021-11-05 13:27:46,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:46,400 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 295 transitions. [2021-11-05 13:27:46,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-05 13:27:46,403 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:27:46,403 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:27:46,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-05 13:27:46,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:27:46,604 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-05 13:27:46,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:27:46,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1861026450, now seen corresponding path program 1 times [2021-11-05 13:27:46,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:27:46,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25364096] [2021-11-05 13:27:46,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:27:46,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:27:46,669 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:27:46,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1718634190] [2021-11-05 13:27:46,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:27:46,670 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:27:46,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:27:46,671 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:27:46,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-05 13:27:47,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:27:47,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 2627 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-05 13:27:47,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:27:47,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:27:47,760 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:27:47,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:27:47,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25364096] [2021-11-05 13:27:47,760 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:27:47,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718634190] [2021-11-05 13:27:47,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718634190] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:27:47,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:27:47,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 13:27:47,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474332768] [2021-11-05 13:27:47,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:27:47,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 13:27:47,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:27:47,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 13:27:47,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:27:47,763 INFO L87 Difference]: Start difference. First operand 243 states and 295 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:48,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:27:48,311 INFO L93 Difference]: Finished difference Result 423 states and 512 transitions. [2021-11-05 13:27:48,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 13:27:48,324 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-05 13:27:48,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:27:48,325 INFO L225 Difference]: With dead ends: 423 [2021-11-05 13:27:48,325 INFO L226 Difference]: Without dead ends: 243 [2021-11-05 13:27:48,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 251.02ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-11-05 13:27:48,327 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 1228 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 296.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1228 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.30ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 362.59ms IncrementalHoareTripleChecker+Time [2021-11-05 13:27:48,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1228 Valid, 383 Invalid, 116 Unknown, 0 Unchecked, 3.30ms Time], IncrementalHoareTripleChecker [21 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 362.59ms Time] [2021-11-05 13:27:48,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-11-05 13:27:48,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2021-11-05 13:27:48,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 228 states have (on average 1.2850877192982457) internal successors, (293), 242 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:48,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 293 transitions. [2021-11-05 13:27:48,336 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 293 transitions. Word has length 64 [2021-11-05 13:27:48,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:27:48,339 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 293 transitions. [2021-11-05 13:27:48,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:48,339 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 293 transitions. [2021-11-05 13:27:48,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-05 13:27:48,340 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:27:48,341 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:27:48,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-05 13:27:48,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:27:48,555 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-05 13:27:48,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:27:48,556 INFO L85 PathProgramCache]: Analyzing trace with hash 219242486, now seen corresponding path program 1 times [2021-11-05 13:27:48,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:27:48,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602926037] [2021-11-05 13:27:48,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:27:48,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:27:48,615 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:27:48,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [357197283] [2021-11-05 13:27:48,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:27:48,616 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:27:48,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:27:48,617 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:27:48,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-05 13:27:49,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:27:49,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 2722 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-05 13:27:49,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:27:49,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:27:49,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:27:49,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:27:49,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602926037] [2021-11-05 13:27:49,741 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:27:49,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357197283] [2021-11-05 13:27:49,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357197283] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:27:49,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:27:49,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 13:27:49,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338007589] [2021-11-05 13:27:49,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:27:49,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 13:27:49,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:27:49,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 13:27:49,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:27:49,743 INFO L87 Difference]: Start difference. First operand 243 states and 293 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:50,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:27:50,019 INFO L93 Difference]: Finished difference Result 376 states and 448 transitions. [2021-11-05 13:27:50,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 13:27:50,019 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-05 13:27:50,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:27:50,021 INFO L225 Difference]: With dead ends: 376 [2021-11-05 13:27:50,021 INFO L226 Difference]: Without dead ends: 243 [2021-11-05 13:27:50,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 84.01ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:27:50,021 INFO L933 BasicCegarLoop]: 267 mSDtfsCounter, 443 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 195.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.10ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 213.58ms IncrementalHoareTripleChecker+Time [2021-11-05 13:27:50,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 589 Invalid, 70 Unknown, 0 Unchecked, 2.10ms Time], IncrementalHoareTripleChecker [4 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 213.58ms Time] [2021-11-05 13:27:50,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-11-05 13:27:50,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2021-11-05 13:27:50,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 228 states have (on average 1.2763157894736843) internal successors, (291), 242 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:50,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 291 transitions. [2021-11-05 13:27:50,030 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 291 transitions. Word has length 72 [2021-11-05 13:27:50,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:27:50,032 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 291 transitions. [2021-11-05 13:27:50,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:50,033 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 291 transitions. [2021-11-05 13:27:50,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-05 13:27:50,034 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:27:50,034 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:27:50,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-05 13:27:50,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:27:50,255 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-05 13:27:50,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:27:50,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1338123328, now seen corresponding path program 1 times [2021-11-05 13:27:50,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:27:50,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069252292] [2021-11-05 13:27:50,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:27:50,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:27:50,319 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:27:50,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1118023201] [2021-11-05 13:27:50,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:27:50,320 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:27:50,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:27:50,321 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:27:50,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-05 13:27:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:27:50,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 2907 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 13:27:50,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:27:51,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:27:51,131 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:27:51,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:27:51,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069252292] [2021-11-05 13:27:51,131 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:27:51,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118023201] [2021-11-05 13:27:51,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118023201] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:27:51,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:27:51,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:27:51,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779802055] [2021-11-05 13:27:51,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:27:51,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:27:51,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:27:51,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:27:51,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:27:51,134 INFO L87 Difference]: Start difference. First operand 243 states and 291 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:51,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:27:51,466 INFO L93 Difference]: Finished difference Result 469 states and 567 transitions. [2021-11-05 13:27:51,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 13:27:51,467 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-05 13:27:51,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:27:51,468 INFO L225 Difference]: With dead ends: 469 [2021-11-05 13:27:51,468 INFO L226 Difference]: Without dead ends: 273 [2021-11-05 13:27:51,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.81ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:27:51,469 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 45 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 271.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.07ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 295.51ms IncrementalHoareTripleChecker+Time [2021-11-05 13:27:51,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 808 Invalid, 110 Unknown, 0 Unchecked, 2.07ms Time], IncrementalHoareTripleChecker [21 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 295.51ms Time] [2021-11-05 13:27:51,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-11-05 13:27:51,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 255. [2021-11-05 13:27:51,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 240 states have (on average 1.2625) internal successors, (303), 254 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:51,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 303 transitions. [2021-11-05 13:27:51,475 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 303 transitions. Word has length 88 [2021-11-05 13:27:51,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:27:51,475 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 303 transitions. [2021-11-05 13:27:51,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:51,476 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 303 transitions. [2021-11-05 13:27:51,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-05 13:27:51,476 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:27:51,476 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:27:51,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-05 13:27:51,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:27:51,691 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-05 13:27:51,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:27:51,692 INFO L85 PathProgramCache]: Analyzing trace with hash -436884034, now seen corresponding path program 1 times [2021-11-05 13:27:51,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:27:51,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365329470] [2021-11-05 13:27:51,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:27:51,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:27:51,753 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:27:51,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [938979898] [2021-11-05 13:27:51,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:27:51,754 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:27:51,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:27:51,755 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:27:51,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-05 13:27:52,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:27:52,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 2912 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-05 13:27:52,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:27:52,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:27:52,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:27:52,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:27:52,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365329470] [2021-11-05 13:27:52,711 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:27:52,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938979898] [2021-11-05 13:27:52,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938979898] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:27:52,711 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:27:52,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 13:27:52,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532429078] [2021-11-05 13:27:52,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:27:52,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 13:27:52,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:27:52,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 13:27:52,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:27:52,712 INFO L87 Difference]: Start difference. First operand 255 states and 303 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:52,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:27:52,890 INFO L93 Difference]: Finished difference Result 592 states and 693 transitions. [2021-11-05 13:27:52,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 13:27:52,890 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-05 13:27:52,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:27:52,892 INFO L225 Difference]: With dead ends: 592 [2021-11-05 13:27:52,892 INFO L226 Difference]: Without dead ends: 419 [2021-11-05 13:27:52,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 63.74ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-05 13:27:52,893 INFO L933 BasicCegarLoop]: 452 mSDtfsCounter, 195 mSDsluCounter, 1147 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 123.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 1599 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.40ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 135.02ms IncrementalHoareTripleChecker+Time [2021-11-05 13:27:52,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 1599 Invalid, 49 Unknown, 0 Unchecked, 2.40ms Time], IncrementalHoareTripleChecker [6 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 135.02ms Time] [2021-11-05 13:27:52,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2021-11-05 13:27:52,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 267. [2021-11-05 13:27:52,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 252 states have (on average 1.2658730158730158) internal successors, (319), 266 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:52,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 319 transitions. [2021-11-05 13:27:52,901 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 319 transitions. Word has length 88 [2021-11-05 13:27:52,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:27:52,902 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 319 transitions. [2021-11-05 13:27:52,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:52,902 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 319 transitions. [2021-11-05 13:27:52,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-05 13:27:52,903 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:27:52,903 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:27:52,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-05 13:27:53,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:27:53,116 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-05 13:27:53,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:27:53,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1612503808, now seen corresponding path program 1 times [2021-11-05 13:27:53,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:27:53,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663653219] [2021-11-05 13:27:53,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:27:53,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:27:53,179 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:27:53,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1710880853] [2021-11-05 13:27:53,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:27:53,180 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:27:53,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:27:53,181 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:27:53,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-05 13:27:53,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:27:53,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 2917 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-05 13:27:53,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:27:54,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:27:54,280 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:27:54,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:27:54,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663653219] [2021-11-05 13:27:54,280 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:27:54,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710880853] [2021-11-05 13:27:54,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710880853] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:27:54,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:27:54,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 13:27:54,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386881874] [2021-11-05 13:27:54,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:27:54,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 13:27:54,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:27:54,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 13:27:54,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 13:27:54,282 INFO L87 Difference]: Start difference. First operand 267 states and 319 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:27:56,340 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:27:58,441 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:28:00,605 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:28:02,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:28:02,362 INFO L93 Difference]: Finished difference Result 633 states and 750 transitions. [2021-11-05 13:28:02,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 13:28:02,365 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-05 13:28:02,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:28:02,366 INFO L225 Difference]: With dead ends: 633 [2021-11-05 13:28:02,366 INFO L226 Difference]: Without dead ends: 445 [2021-11-05 13:28:02,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 344.19ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-05 13:28:02,367 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 186 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 11 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7284.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.94ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7822.34ms IncrementalHoareTripleChecker+Time [2021-11-05 13:28:02,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 1324 Invalid, 444 Unknown, 0 Unchecked, 6.94ms Time], IncrementalHoareTripleChecker [11 Valid, 430 Invalid, 3 Unknown, 0 Unchecked, 7822.34ms Time] [2021-11-05 13:28:02,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2021-11-05 13:28:02,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 275. [2021-11-05 13:28:02,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 260 states have (on average 1.2653846153846153) internal successors, (329), 274 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:28:02,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 329 transitions. [2021-11-05 13:28:02,376 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 329 transitions. Word has length 88 [2021-11-05 13:28:02,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:28:02,376 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 329 transitions. [2021-11-05 13:28:02,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:28:02,376 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 329 transitions. [2021-11-05 13:28:02,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-05 13:28:02,376 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:28:02,377 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:28:02,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-05 13:28:02,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:28:02,577 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-05 13:28:02,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:28:02,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1860650302, now seen corresponding path program 1 times [2021-11-05 13:28:02,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:28:02,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793723780] [2021-11-05 13:28:02,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:28:02,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:28:02,661 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:28:02,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [916327841] [2021-11-05 13:28:02,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:28:02,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:28:02,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:28:02,662 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:28:02,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-05 13:28:03,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:28:03,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 2914 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 13:28:03,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:28:03,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:28:03,509 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:28:03,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:28:03,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793723780] [2021-11-05 13:28:03,510 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:28:03,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916327841] [2021-11-05 13:28:03,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916327841] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:28:03,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:28:03,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:28:03,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983767680] [2021-11-05 13:28:03,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:28:03,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:28:03,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:28:03,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:28:03,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:28:03,511 INFO L87 Difference]: Start difference. First operand 275 states and 329 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:28:03,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:28:03,643 INFO L93 Difference]: Finished difference Result 483 states and 574 transitions. [2021-11-05 13:28:03,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 13:28:03,644 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-05 13:28:03,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:28:03,645 INFO L225 Difference]: With dead ends: 483 [2021-11-05 13:28:03,645 INFO L226 Difference]: Without dead ends: 291 [2021-11-05 13:28:03,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.08ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:28:03,645 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 5 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 97.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.97ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 104.65ms IncrementalHoareTripleChecker+Time [2021-11-05 13:28:03,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 848 Invalid, 34 Unknown, 0 Unchecked, 0.97ms Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 104.65ms Time] [2021-11-05 13:28:03,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-11-05 13:28:03,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 283. [2021-11-05 13:28:03,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 268 states have (on average 1.257462686567164) internal successors, (337), 282 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:28:03,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 337 transitions. [2021-11-05 13:28:03,653 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 337 transitions. Word has length 88 [2021-11-05 13:28:03,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:28:03,654 INFO L470 AbstractCegarLoop]: Abstraction has 283 states and 337 transitions. [2021-11-05 13:28:03,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:28:03,654 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 337 transitions. [2021-11-05 13:28:03,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-05 13:28:03,654 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:28:03,654 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:28:03,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-05 13:28:03,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:28:03,855 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-05 13:28:03,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:28:03,856 INFO L85 PathProgramCache]: Analyzing trace with hash 488843004, now seen corresponding path program 1 times [2021-11-05 13:28:03,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:28:03,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676166505] [2021-11-05 13:28:03,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:28:03,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:28:03,914 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:28:03,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [627294159] [2021-11-05 13:28:03,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:28:03,915 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:28:03,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:28:03,916 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:28:03,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-05 13:28:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:28:04,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 2909 conjuncts, 94 conjunts are in the unsatisfiable core [2021-11-05 13:28:04,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:28:06,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-05 13:28:06,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:28:06,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:28:06,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:28:06,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676166505] [2021-11-05 13:28:06,505 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:28:06,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627294159] [2021-11-05 13:28:06,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627294159] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:28:06,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:28:06,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-05 13:28:06,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885508937] [2021-11-05 13:28:06,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:28:06,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-05 13:28:06,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:28:06,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-05 13:28:06,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-05 13:28:06,507 INFO L87 Difference]: Start difference. First operand 283 states and 337 transitions. Second operand has 13 states, 13 states have (on average 6.769230769230769) internal successors, (88), 13 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:28:08,542 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:28:13,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:28:13,184 INFO L93 Difference]: Finished difference Result 697 states and 823 transitions. [2021-11-05 13:28:13,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-05 13:28:13,185 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.769230769230769) internal successors, (88), 13 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-05 13:28:13,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:28:13,187 INFO L225 Difference]: With dead ends: 697 [2021-11-05 13:28:13,187 INFO L226 Difference]: Without dead ends: 510 [2021-11-05 13:28:13,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 2394.99ms TimeCoverageRelationStatistics Valid=191, Invalid=511, Unknown=0, NotChecked=0, Total=702 [2021-11-05 13:28:13,188 INFO L933 BasicCegarLoop]: 373 mSDtfsCounter, 1280 mSDsluCounter, 2149 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 58 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4560.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1280 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.48ms SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4847.33ms IncrementalHoareTripleChecker+Time [2021-11-05 13:28:13,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1280 Valid, 2522 Invalid, 979 Unknown, 0 Unchecked, 13.48ms Time], IncrementalHoareTripleChecker [58 Valid, 920 Invalid, 1 Unknown, 0 Unchecked, 4847.33ms Time] [2021-11-05 13:28:13,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2021-11-05 13:28:13,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 397. [2021-11-05 13:28:13,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 382 states have (on average 1.2539267015706805) internal successors, (479), 396 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:28:13,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 479 transitions. [2021-11-05 13:28:13,202 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 479 transitions. Word has length 88 [2021-11-05 13:28:13,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:28:13,202 INFO L470 AbstractCegarLoop]: Abstraction has 397 states and 479 transitions. [2021-11-05 13:28:13,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.769230769230769) internal successors, (88), 13 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:28:13,203 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 479 transitions. [2021-11-05 13:28:13,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-05 13:28:13,203 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:28:13,203 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:28:13,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-05 13:28:13,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-05 13:28:13,417 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-05 13:28:13,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:28:13,418 INFO L85 PathProgramCache]: Analyzing trace with hash -2128931166, now seen corresponding path program 1 times [2021-11-05 13:28:13,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:28:13,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977457582] [2021-11-05 13:28:13,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:28:13,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:28:13,481 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:28:13,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [327918688] [2021-11-05 13:28:13,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:28:13,482 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:28:13,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:28:13,483 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:28:13,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-05 13:28:14,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:28:14,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 2914 conjuncts, 151 conjunts are in the unsatisfiable core [2021-11-05 13:28:14,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:28:14,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-05 13:28:15,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:15,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-05 13:28:15,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:15,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-05 13:28:16,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:16,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:16,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:16,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2021-11-05 13:28:16,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:16,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:16,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:16,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2021-11-05 13:28:16,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:16,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:16,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:16,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-05 13:28:16,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:16,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:16,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:16,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-05 13:28:16,906 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-05 13:28:16,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-05 13:28:17,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:17,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:17,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:17,259 INFO L354 Elim1Store]: treesize reduction 96, result has 21.3 percent of original size [2021-11-05 13:28:17,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 79 [2021-11-05 13:28:17,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:17,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:17,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:17,367 INFO L354 Elim1Store]: treesize reduction 96, result has 21.3 percent of original size [2021-11-05 13:28:17,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 64 [2021-11-05 13:28:19,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:19,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:19,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:19,062 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-05 13:28:19,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 79 [2021-11-05 13:28:19,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:19,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:19,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:19,111 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-05 13:28:19,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 68 [2021-11-05 13:28:19,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:28:19,762 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:28:19,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:28:19,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977457582] [2021-11-05 13:28:19,762 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:28:19,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327918688] [2021-11-05 13:28:19,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327918688] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:28:19,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:28:19,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-11-05 13:28:19,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082710371] [2021-11-05 13:28:19,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:28:19,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-05 13:28:19,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:28:19,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-05 13:28:19,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2021-11-05 13:28:19,764 INFO L87 Difference]: Start difference. First operand 397 states and 479 transitions. Second operand has 25 states, 25 states have (on average 3.6) internal successors, (90), 25 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:28:21,800 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:28:23,972 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:28:26,119 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:28:28,231 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:28:30,381 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:28:32,535 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:28:34,688 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:28:43,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:28:43,306 INFO L93 Difference]: Finished difference Result 1350 states and 1630 transitions. [2021-11-05 13:28:43,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-05 13:28:43,307 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.6) internal successors, (90), 25 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-05 13:28:43,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:28:43,311 INFO L225 Difference]: With dead ends: 1350 [2021-11-05 13:28:43,311 INFO L226 Difference]: Without dead ends: 1000 [2021-11-05 13:28:43,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 5177.05ms TimeCoverageRelationStatistics Valid=305, Invalid=1675, Unknown=0, NotChecked=0, Total=1980 [2021-11-05 13:28:43,313 INFO L933 BasicCegarLoop]: 486 mSDtfsCounter, 1030 mSDsluCounter, 4059 mSDsCounter, 0 mSdLazyCounter, 1840 mSolverCounterSat, 99 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18876.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1030 SdHoareTripleChecker+Valid, 4545 SdHoareTripleChecker+Invalid, 1946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.99ms SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1840 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20284.71ms IncrementalHoareTripleChecker+Time [2021-11-05 13:28:43,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1030 Valid, 4545 Invalid, 1946 Unknown, 0 Unchecked, 17.99ms Time], IncrementalHoareTripleChecker [99 Valid, 1840 Invalid, 7 Unknown, 0 Unchecked, 20284.71ms Time] [2021-11-05 13:28:43,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2021-11-05 13:28:43,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 643. [2021-11-05 13:28:43,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 628 states have (on average 1.2452229299363058) internal successors, (782), 642 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:28:43,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 782 transitions. [2021-11-05 13:28:43,333 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 782 transitions. Word has length 90 [2021-11-05 13:28:43,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:28:43,333 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 782 transitions. [2021-11-05 13:28:43,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.6) internal successors, (90), 25 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:28:43,334 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 782 transitions. [2021-11-05 13:28:43,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-05 13:28:43,334 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:28:43,335 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:28:43,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-05 13:28:43,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:28:43,547 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-05 13:28:43,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:28:43,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1685030492, now seen corresponding path program 1 times [2021-11-05 13:28:43,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:28:43,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518641950] [2021-11-05 13:28:43,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:28:43,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:28:43,603 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:28:43,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1125924647] [2021-11-05 13:28:43,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:28:43,604 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:28:43,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:28:43,605 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:28:43,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-05 13:28:44,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:28:44,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 2909 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-05 13:28:44,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:28:44,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:28:44,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:28:44,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:28:44,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518641950] [2021-11-05 13:28:44,636 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:28:44,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125924647] [2021-11-05 13:28:44,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125924647] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:28:44,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:28:44,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 13:28:44,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117238651] [2021-11-05 13:28:44,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:28:44,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 13:28:44,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:28:44,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 13:28:44,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:28:44,637 INFO L87 Difference]: Start difference. First operand 643 states and 782 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:28:46,674 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:28:48,847 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:28:50,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:28:50,391 INFO L93 Difference]: Finished difference Result 1456 states and 1762 transitions. [2021-11-05 13:28:50,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 13:28:50,391 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-05 13:28:50,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:28:50,394 INFO L225 Difference]: With dead ends: 1456 [2021-11-05 13:28:50,394 INFO L226 Difference]: Without dead ends: 883 [2021-11-05 13:28:50,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 206.08ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:28:50,395 INFO L933 BasicCegarLoop]: 375 mSDtfsCounter, 178 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 38 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5107.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.22ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5565.44ms IncrementalHoareTripleChecker+Time [2021-11-05 13:28:50,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 1199 Invalid, 410 Unknown, 0 Unchecked, 4.22ms Time], IncrementalHoareTripleChecker [38 Valid, 370 Invalid, 2 Unknown, 0 Unchecked, 5565.44ms Time] [2021-11-05 13:28:50,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2021-11-05 13:28:50,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 656. [2021-11-05 13:28:50,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 641 states have (on average 1.2324492979719188) internal successors, (790), 655 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:28:50,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 790 transitions. [2021-11-05 13:28:50,416 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 790 transitions. Word has length 90 [2021-11-05 13:28:50,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:28:50,416 INFO L470 AbstractCegarLoop]: Abstraction has 656 states and 790 transitions. [2021-11-05 13:28:50,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:28:50,416 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 790 transitions. [2021-11-05 13:28:50,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-05 13:28:50,417 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:28:50,417 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:28:50,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-11-05 13:28:50,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-05 13:28:50,630 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-05 13:28:50,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:28:50,631 INFO L85 PathProgramCache]: Analyzing trace with hash 2128856546, now seen corresponding path program 1 times [2021-11-05 13:28:50,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:28:50,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233216712] [2021-11-05 13:28:50,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:28:50,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:28:50,689 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:28:50,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [777003544] [2021-11-05 13:28:50,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:28:50,690 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:28:50,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:28:50,691 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:28:50,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-05 13:28:52,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:28:52,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 2914 conjuncts, 158 conjunts are in the unsatisfiable core [2021-11-05 13:28:52,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:28:52,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-05 13:28:52,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:52,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-05 13:28:52,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:52,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-05 13:28:53,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:53,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:53,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:53,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2021-11-05 13:28:53,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:53,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:53,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:53,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2021-11-05 13:28:53,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:53,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:54,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:54,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-05 13:28:54,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:54,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:54,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:54,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-05 13:28:54,634 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-05 13:28:54,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-05 13:28:54,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:55,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:55,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:55,110 INFO L354 Elim1Store]: treesize reduction 96, result has 21.3 percent of original size [2021-11-05 13:28:55,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 79 [2021-11-05 13:28:55,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:55,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:55,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:55,234 INFO L354 Elim1Store]: treesize reduction 96, result has 21.3 percent of original size [2021-11-05 13:28:55,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 64 [2021-11-05 13:28:57,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:57,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:57,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:57,325 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-05 13:28:57,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 79 [2021-11-05 13:28:57,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:57,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:57,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:28:57,407 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-05 13:28:57,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 68 [2021-11-05 13:28:58,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:28:58,889 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:28:58,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:28:58,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233216712] [2021-11-05 13:28:58,889 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:28:58,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777003544] [2021-11-05 13:28:58,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777003544] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:28:58,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:28:58,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-11-05 13:28:58,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614053277] [2021-11-05 13:28:58,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:28:58,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-05 13:28:58,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:28:58,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-05 13:28:58,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=616, Unknown=0, NotChecked=0, Total=702 [2021-11-05 13:28:58,891 INFO L87 Difference]: Start difference. First operand 656 states and 790 transitions. Second operand has 27 states, 27 states have (on average 3.3333333333333335) internal successors, (90), 27 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:29:00,929 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:29:03,099 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:29:05,285 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:29:07,483 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:29:09,625 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:29:11,826 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:29:14,009 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:29:16,194 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:29:18,439 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:29:20,670 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:29:33,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:29:33,190 INFO L93 Difference]: Finished difference Result 1495 states and 1756 transitions. [2021-11-05 13:29:33,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-05 13:29:33,191 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.3333333333333335) internal successors, (90), 27 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-05 13:29:33,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:29:33,194 INFO L225 Difference]: With dead ends: 1495 [2021-11-05 13:29:33,194 INFO L226 Difference]: Without dead ends: 1172 [2021-11-05 13:29:33,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1135 ImplicationChecksByTransitivity, 7907.44ms TimeCoverageRelationStatistics Valid=473, Invalid=3433, Unknown=0, NotChecked=0, Total=3906 [2021-11-05 13:29:33,196 INFO L933 BasicCegarLoop]: 541 mSDtfsCounter, 1640 mSDsluCounter, 5749 mSDsCounter, 0 mSdLazyCounter, 2747 mSolverCounterSat, 136 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26824.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1640 SdHoareTripleChecker+Valid, 6290 SdHoareTripleChecker+Invalid, 2893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.64ms SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 2747 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29212.72ms IncrementalHoareTripleChecker+Time [2021-11-05 13:29:33,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1640 Valid, 6290 Invalid, 2893 Unknown, 0 Unchecked, 23.64ms Time], IncrementalHoareTripleChecker [136 Valid, 2747 Invalid, 10 Unknown, 0 Unchecked, 29212.72ms Time] [2021-11-05 13:29:33,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2021-11-05 13:29:33,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 678. [2021-11-05 13:29:33,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 663 states have (on average 1.2232277526395174) internal successors, (811), 677 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:29:33,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 811 transitions. [2021-11-05 13:29:33,218 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 811 transitions. Word has length 90 [2021-11-05 13:29:33,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:29:33,218 INFO L470 AbstractCegarLoop]: Abstraction has 678 states and 811 transitions. [2021-11-05 13:29:33,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.3333333333333335) internal successors, (90), 27 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:29:33,218 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 811 transitions. [2021-11-05 13:29:33,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-05 13:29:33,219 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:29:33,219 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:29:33,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-05 13:29:33,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-05 13:29:33,435 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-05 13:29:33,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:29:33,436 INFO L85 PathProgramCache]: Analyzing trace with hash 885822756, now seen corresponding path program 1 times [2021-11-05 13:29:33,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:29:33,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621772887] [2021-11-05 13:29:33,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:29:33,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:29:33,491 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:29:33,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [542085609] [2021-11-05 13:29:33,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:29:33,491 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:29:33,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:29:33,492 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:29:33,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-05 13:29:34,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:29:34,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 2919 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 13:29:34,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:29:34,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:29:34,328 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:29:34,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:29:34,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621772887] [2021-11-05 13:29:34,328 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:29:34,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542085609] [2021-11-05 13:29:34,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542085609] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:29:34,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:29:34,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:29:34,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347828460] [2021-11-05 13:29:34,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:29:34,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:29:34,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:29:34,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:29:34,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:29:34,330 INFO L87 Difference]: Start difference. First operand 678 states and 811 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:29:34,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:29:34,444 INFO L93 Difference]: Finished difference Result 1176 states and 1400 transitions. [2021-11-05 13:29:34,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 13:29:34,445 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-05 13:29:34,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:29:34,446 INFO L225 Difference]: With dead ends: 1176 [2021-11-05 13:29:34,447 INFO L226 Difference]: Without dead ends: 666 [2021-11-05 13:29:34,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.43ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:29:34,448 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 4 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 74.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.59ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 80.51ms IncrementalHoareTripleChecker+Time [2021-11-05 13:29:34,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 850 Invalid, 37 Unknown, 0 Unchecked, 0.59ms Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 80.51ms Time] [2021-11-05 13:29:34,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2021-11-05 13:29:34,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 559. [2021-11-05 13:29:34,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 544 states have (on average 1.213235294117647) internal successors, (660), 558 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:29:34,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 660 transitions. [2021-11-05 13:29:34,465 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 660 transitions. Word has length 90 [2021-11-05 13:29:34,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:29:34,465 INFO L470 AbstractCegarLoop]: Abstraction has 559 states and 660 transitions. [2021-11-05 13:29:34,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:29:34,466 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 660 transitions. [2021-11-05 13:29:34,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-05 13:29:34,466 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:29:34,466 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:29:34,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-05 13:29:34,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-05 13:29:34,682 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-05 13:29:34,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:29:34,683 INFO L85 PathProgramCache]: Analyzing trace with hash 408231422, now seen corresponding path program 1 times [2021-11-05 13:29:34,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:29:34,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240531509] [2021-11-05 13:29:34,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:29:34,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:29:34,730 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:29:34,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [165328305] [2021-11-05 13:29:34,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:29:34,731 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:29:34,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:29:34,732 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:29:34,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-05 13:33:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:33:20,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 2936 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-05 13:33:20,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:33:29,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:33:29,158 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:33:29,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:33:29,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240531509] [2021-11-05 13:33:29,158 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:33:29,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165328305] [2021-11-05 13:33:29,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165328305] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:33:29,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:33:29,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-05 13:33:29,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560758993] [2021-11-05 13:33:29,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:33:29,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 13:33:29,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:33:29,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 13:33:29,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-05 13:33:29,160 INFO L87 Difference]: Start difference. First operand 559 states and 660 transitions. Second operand has 10 states, 10 states have (on average 9.1) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:33:29,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:33:29,234 INFO L93 Difference]: Finished difference Result 1310 states and 1539 transitions. [2021-11-05 13:33:29,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 13:33:29,235 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-05 13:33:29,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:33:29,237 INFO L225 Difference]: With dead ends: 1310 [2021-11-05 13:33:29,237 INFO L226 Difference]: Without dead ends: 938 [2021-11-05 13:33:29,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 6644.14ms TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-05 13:33:29,239 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 194 mSDsluCounter, 1067 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.34ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 552 IncrementalHoareTripleChecker+Unchecked, 42.29ms IncrementalHoareTripleChecker+Time [2021-11-05 13:33:29,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 1344 Invalid, 565 Unknown, 0 Unchecked, 1.34ms Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 552 Unchecked, 42.29ms Time] [2021-11-05 13:33:29,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2021-11-05 13:33:29,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 563. [2021-11-05 13:33:29,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 548 states have (on average 1.2116788321167884) internal successors, (664), 562 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:33:29,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 664 transitions. [2021-11-05 13:33:29,261 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 664 transitions. Word has length 91 [2021-11-05 13:33:29,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:33:29,261 INFO L470 AbstractCegarLoop]: Abstraction has 563 states and 664 transitions. [2021-11-05 13:33:29,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:33:29,261 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 664 transitions. [2021-11-05 13:33:29,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-05 13:33:29,262 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:33:29,262 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:33:29,487 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forcibly destroying the process [2021-11-05 13:33:29,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-05 13:33:29,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-05 13:33:29,516 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-05 13:33:29,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:33:29,516 INFO L85 PathProgramCache]: Analyzing trace with hash 2122925492, now seen corresponding path program 1 times [2021-11-05 13:33:29,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:33:29,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951095038] [2021-11-05 13:33:29,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:33:29,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:33:29,592 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:33:29,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [700156083] [2021-11-05 13:33:29,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:33:29,593 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:33:29,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:33:29,594 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:33:29,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-05 13:33:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:33:30,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 2939 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-05 13:33:30,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:33:30,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:33:30,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:33:30,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:33:30,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951095038] [2021-11-05 13:33:30,636 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:33:30,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700156083] [2021-11-05 13:33:30,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700156083] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:33:30,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:33:30,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 13:33:30,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60573169] [2021-11-05 13:33:30,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:33:30,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 13:33:30,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:33:30,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 13:33:30,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:33:30,637 INFO L87 Difference]: Start difference. First operand 563 states and 664 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:33:31,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:33:31,077 INFO L93 Difference]: Finished difference Result 1000 states and 1164 transitions. [2021-11-05 13:33:31,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 13:33:31,078 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-05 13:33:31,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:33:31,080 INFO L225 Difference]: With dead ends: 1000 [2021-11-05 13:33:31,080 INFO L226 Difference]: Without dead ends: 630 [2021-11-05 13:33:31,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 251.79ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-05 13:33:31,081 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 217 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 247.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 1859 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.32ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 268.68ms IncrementalHoareTripleChecker+Time [2021-11-05 13:33:31,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 1859 Invalid, 86 Unknown, 0 Unchecked, 2.32ms Time], IncrementalHoareTripleChecker [10 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 268.68ms Time] [2021-11-05 13:33:31,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2021-11-05 13:33:31,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 563. [2021-11-05 13:33:31,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 548 states have (on average 1.2062043795620438) internal successors, (661), 562 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:33:31,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 661 transitions. [2021-11-05 13:33:31,102 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 661 transitions. Word has length 91 [2021-11-05 13:33:31,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:33:31,102 INFO L470 AbstractCegarLoop]: Abstraction has 563 states and 661 transitions. [2021-11-05 13:33:31,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:33:31,103 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 661 transitions. [2021-11-05 13:33:31,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-05 13:33:31,103 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:33:31,103 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:33:31,129 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-11-05 13:33:31,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:33:31,313 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-05 13:33:31,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:33:31,313 INFO L85 PathProgramCache]: Analyzing trace with hash -937071218, now seen corresponding path program 1 times [2021-11-05 13:33:31,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:33:31,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504159969] [2021-11-05 13:33:31,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:33:31,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:33:31,366 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:33:31,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2029341807] [2021-11-05 13:33:31,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:33:31,367 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:33:31,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:33:31,368 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:33:31,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-05 13:33:32,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:33:32,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 2931 conjuncts, 65 conjunts are in the unsatisfiable core [2021-11-05 13:33:32,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:33:32,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-05 13:33:32,640 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-05 13:33:32,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-05 13:33:32,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-11-05 13:33:33,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:33:33,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 32 [2021-11-05 13:33:33,682 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-05 13:33:33,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 35 [2021-11-05 13:33:33,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:33:33,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 30 [2021-11-05 13:33:34,160 INFO L354 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2021-11-05 13:33:34,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2021-11-05 13:33:34,402 INFO L354 Elim1Store]: treesize reduction 56, result has 21.1 percent of original size [2021-11-05 13:33:34,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 34 [2021-11-05 13:33:34,608 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-05 13:33:34,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2021-11-05 13:33:34,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:33:34,979 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:33:34,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:33:34,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504159969] [2021-11-05 13:33:34,979 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:33:34,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029341807] [2021-11-05 13:33:34,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029341807] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:33:34,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:33:34,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-05 13:33:34,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673817412] [2021-11-05 13:33:34,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:33:34,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-05 13:33:34,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:33:34,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-05 13:33:34,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-11-05 13:33:34,981 INFO L87 Difference]: Start difference. First operand 563 states and 661 transitions. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:33:37,035 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:33:39,307 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:33:41,538 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:33:43,777 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:33:49,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:33:49,461 INFO L93 Difference]: Finished difference Result 976 states and 1143 transitions. [2021-11-05 13:33:49,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-05 13:33:49,462 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-05 13:33:49,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:33:49,463 INFO L225 Difference]: With dead ends: 976 [2021-11-05 13:33:49,463 INFO L226 Difference]: Without dead ends: 627 [2021-11-05 13:33:49,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 3492.23ms TimeCoverageRelationStatistics Valid=176, Invalid=636, Unknown=0, NotChecked=0, Total=812 [2021-11-05 13:33:49,464 INFO L933 BasicCegarLoop]: 305 mSDtfsCounter, 196 mSDsluCounter, 1838 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 41 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10580.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 2143 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.57ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11783.93ms IncrementalHoareTripleChecker+Time [2021-11-05 13:33:49,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 2143 Invalid, 816 Unknown, 0 Unchecked, 10.57ms Time], IncrementalHoareTripleChecker [41 Valid, 771 Invalid, 4 Unknown, 0 Unchecked, 11783.93ms Time] [2021-11-05 13:33:49,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2021-11-05 13:33:49,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 583. [2021-11-05 13:33:49,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 568 states have (on average 1.204225352112676) internal successors, (684), 582 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:33:49,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 684 transitions. [2021-11-05 13:33:49,502 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 684 transitions. Word has length 93 [2021-11-05 13:33:49,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:33:49,502 INFO L470 AbstractCegarLoop]: Abstraction has 583 states and 684 transitions. [2021-11-05 13:33:49,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:33:49,502 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 684 transitions. [2021-11-05 13:33:49,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-05 13:33:49,506 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:33:49,506 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:33:49,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-05 13:33:49,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-05 13:33:49,723 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-05 13:33:49,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:33:49,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1964366244, now seen corresponding path program 1 times [2021-11-05 13:33:49,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:33:49,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171718701] [2021-11-05 13:33:49,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:33:49,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:33:49,785 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:33:49,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1260664652] [2021-11-05 13:33:49,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:33:49,786 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:33:49,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:33:49,787 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:33:49,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-05 13:33:50,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:33:50,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 2931 conjuncts, 137 conjunts are in the unsatisfiable core [2021-11-05 13:33:50,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:33:50,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-05 13:33:51,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:33:51,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-11-05 13:33:52,554 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-05 13:33:52,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 17 [2021-11-05 13:33:52,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:33:52,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:33:52,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:33:52,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:33:52,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:33:52,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:33:52,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 44 [2021-11-05 13:33:53,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:33:53,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:33:53,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:33:53,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:33:53,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:33:53,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:33:53,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 44 [2021-11-05 13:33:53,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:33:53,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:33:53,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:33:53,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:33:53,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:33:53,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:33:53,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 44 [2021-11-05 13:33:53,896 INFO L354 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2021-11-05 13:33:53,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 19 [2021-11-05 13:33:54,185 INFO L354 Elim1Store]: treesize reduction 78, result has 22.0 percent of original size [2021-11-05 13:33:54,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 51 [2021-11-05 13:34:08,038 INFO L354 Elim1Store]: treesize reduction 55, result has 21.4 percent of original size [2021-11-05 13:34:08,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 71 [2021-11-05 13:34:20,513 INFO L354 Elim1Store]: treesize reduction 37, result has 24.5 percent of original size [2021-11-05 13:34:20,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 95 treesize of output 71 [2021-11-05 13:34:21,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:34:21,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:34:21,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:34:21,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171718701] [2021-11-05 13:34:21,136 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:34:21,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260664652] [2021-11-05 13:34:21,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260664652] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:34:21,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:34:21,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-11-05 13:34:21,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851117062] [2021-11-05 13:34:21,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:34:21,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-05 13:34:21,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:34:21,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-05 13:34:21,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=473, Unknown=5, NotChecked=0, Total=552 [2021-11-05 13:34:21,138 INFO L87 Difference]: Start difference. First operand 583 states and 684 transitions. Second operand has 24 states, 24 states have (on average 3.875) internal successors, (93), 24 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:34:23,188 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:34:25,427 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:34:27,717 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:34:29,993 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:34:32,276 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:34:53,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:34:53,300 INFO L93 Difference]: Finished difference Result 1056 states and 1242 transitions. [2021-11-05 13:34:53,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-05 13:34:53,301 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.875) internal successors, (93), 24 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-05 13:34:53,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:34:53,303 INFO L225 Difference]: With dead ends: 1056 [2021-11-05 13:34:53,303 INFO L226 Difference]: Without dead ends: 861 [2021-11-05 13:34:53,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 40838.72ms TimeCoverageRelationStatistics Valid=110, Invalid=810, Unknown=10, NotChecked=0, Total=930 [2021-11-05 13:34:53,304 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 210 mSDsluCounter, 3767 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 26 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12508.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 4155 SdHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.12ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 782 IncrementalHoareTripleChecker+Unchecked, 14036.50ms IncrementalHoareTripleChecker+Time [2021-11-05 13:34:53,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 4155 Invalid, 1450 Unknown, 0 Unchecked, 13.12ms Time], IncrementalHoareTripleChecker [26 Valid, 637 Invalid, 5 Unknown, 782 Unchecked, 14036.50ms Time] [2021-11-05 13:34:53,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2021-11-05 13:34:53,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 638. [2021-11-05 13:34:53,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 623 states have (on average 1.2086677367576244) internal successors, (753), 637 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:34:53,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 753 transitions. [2021-11-05 13:34:53,327 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 753 transitions. Word has length 93 [2021-11-05 13:34:53,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:34:53,328 INFO L470 AbstractCegarLoop]: Abstraction has 638 states and 753 transitions. [2021-11-05 13:34:53,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.875) internal successors, (93), 24 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:34:53,328 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 753 transitions. [2021-11-05 13:34:53,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-05 13:34:53,329 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:34:53,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:34:53,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-05 13:34:53,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:34:53,539 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-05 13:34:53,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:34:53,540 INFO L85 PathProgramCache]: Analyzing trace with hash 821863778, now seen corresponding path program 1 times [2021-11-05 13:34:53,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:34:53,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162625374] [2021-11-05 13:34:53,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:34:53,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:34:53,599 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:34:53,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1161378597] [2021-11-05 13:34:53,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:34:53,600 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:34:53,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:34:53,601 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:34:53,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-05 13:37:31,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:37:31,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 2928 conjuncts, 319 conjunts are in the unsatisfiable core [2021-11-05 13:37:31,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:37:31,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-05 13:37:32,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:37:32,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-05 13:37:32,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:37:32,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-05 13:37:32,937 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-05 13:37:32,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-05 13:37:33,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:37:33,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-05 13:37:33,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:37:33,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 34 [2021-11-05 13:37:33,649 INFO L354 Elim1Store]: treesize reduction 56, result has 25.3 percent of original size [2021-11-05 13:37:33,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 76 treesize of output 66 [2021-11-05 13:37:33,699 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-05 13:37:33,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 64 [2021-11-05 13:37:35,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-05 13:37:35,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:37:35,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-05 13:37:35,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:37:36,018 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-05 13:37:36,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 46 [2021-11-05 13:37:36,957 INFO L354 Elim1Store]: treesize reduction 168, result has 17.6 percent of original size [2021-11-05 13:37:36,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 66 treesize of output 83 [2021-11-05 13:37:37,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:37:37,763 INFO L354 Elim1Store]: treesize reduction 22, result has 4.3 percent of original size [2021-11-05 13:37:37,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 84 treesize of output 60 [2021-11-05 13:37:37,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:37:37,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:37:37,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 28 [2021-11-05 13:37:38,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:37:38,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2021-11-05 13:37:40,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:37:40,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 108 [2021-11-05 13:37:40,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:37:40,871 INFO L354 Elim1Store]: treesize reduction 22, result has 4.3 percent of original size [2021-11-05 13:37:40,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 94 treesize of output 48 [2021-11-05 13:37:45,025 INFO L354 Elim1Store]: treesize reduction 86, result has 18.9 percent of original size [2021-11-05 13:37:45,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 162 treesize of output 172 [2021-11-05 13:37:51,947 INFO L354 Elim1Store]: treesize reduction 238, result has 15.0 percent of original size [2021-11-05 13:37:51,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 103 treesize of output 128 [2021-11-05 13:38:01,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:38:01,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:38:01,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:38:01,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:38:01,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:38:01,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:38:01,164 INFO L354 Elim1Store]: treesize reduction 19, result has 44.1 percent of original size [2021-11-05 13:38:01,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 111 treesize of output 117 [2021-11-05 13:38:28,162 INFO L354 Elim1Store]: treesize reduction 112, result has 28.7 percent of original size [2021-11-05 13:38:28,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 99 treesize of output 132 [2021-11-05 13:39:08,128 INFO L354 Elim1Store]: treesize reduction 235, result has 25.4 percent of original size [2021-11-05 13:39:08,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 95 treesize of output 158 [2021-11-05 13:41:29,605 INFO L354 Elim1Store]: treesize reduction 459, result has 17.0 percent of original size [2021-11-05 13:41:29,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 163 treesize of output 234 Killed by 15