./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b 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_top_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 1b920ac3045decc1a5a84e4c4a6d200f349784425219a23e0b9ddb547b7159b4 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-03 23:45:27,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 23:45:27,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 23:45:27,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 23:45:27,690 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 23:45:27,691 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 23:45:27,691 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 23:45:27,693 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 23:45:27,694 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 23:45:27,694 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 23:45:27,695 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 23:45:27,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 23:45:27,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 23:45:27,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 23:45:27,697 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 23:45:27,698 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 23:45:27,699 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 23:45:27,699 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 23:45:27,700 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 23:45:27,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 23:45:27,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 23:45:27,706 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 23:45:27,707 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 23:45:27,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 23:45:27,711 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 23:45:27,712 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 23:45:27,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 23:45:27,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 23:45:27,713 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 23:45:27,713 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 23:45:27,714 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 23:45:27,714 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 23:45:27,715 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 23:45:27,715 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 23:45:27,716 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 23:45:27,716 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 23:45:27,717 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 23:45:27,717 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 23:45:27,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 23:45:27,718 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 23:45:27,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 23:45:27,719 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-03 23:45:27,732 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 23:45:27,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 23:45:27,738 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-03 23:45:27,739 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-03 23:45:27,740 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 23:45:27,740 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 23:45:27,740 INFO L138 SettingsManager]: * Use SBE=true [2021-11-03 23:45:27,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 23:45:27,740 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 23:45:27,740 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 23:45:27,741 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 23:45:27,741 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 23:45:27,741 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 23:45:27,741 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 23:45:27,742 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 23:45:27,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 23:45:27,742 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 23:45:27,742 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 23:45:27,742 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 23:45:27,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 23:45:27,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 23:45:27,743 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 23:45:27,743 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 23:45:27,743 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-03 23:45:27,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 23:45:27,743 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-03 23:45:27,743 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-03 23:45:27,743 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 23:45:27,744 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 23:45:27,744 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b920ac3045decc1a5a84e4c4a6d200f349784425219a23e0b9ddb547b7159b4 [2021-11-03 23:45:27,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 23:45:27,957 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 23:45:27,958 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 23:45:27,959 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 23:45:27,960 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 23:45:27,960 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i [2021-11-03 23:45:28,012 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f941dbf30/f68d05fc1c864c3b8dddb8a956c9335a/FLAGf6c8fb770 [2021-11-03 23:45:28,608 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 23:45:28,608 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i [2021-11-03 23:45:28,639 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f941dbf30/f68d05fc1c864c3b8dddb8a956c9335a/FLAGf6c8fb770 [2021-11-03 23:45:29,008 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f941dbf30/f68d05fc1c864c3b8dddb8a956c9335a [2021-11-03 23:45:29,010 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 23:45:29,011 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 23:45:29,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 23:45:29,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 23:45:29,015 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 23:45:29,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 11:45:29" (1/1) ... [2021-11-03 23:45:29,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@187060d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:45:29, skipping insertion in model container [2021-11-03 23:45:29,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 11:45:29" (1/1) ... [2021-11-03 23:45:29,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 23:45:29,106 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 23:45:29,315 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_top_harness.i[4496,4509] [2021-11-03 23:45:29,327 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_top_harness.i[4556,4569] [2021-11-03 23:45:29,340 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 23:45:29,344 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 23:45:29,737 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 23:45:29,779 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:45:29,780 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:45:29,780 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:45:29,780 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:45:29,781 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:45:29,787 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:45:29,789 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:45:29,790 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:45:29,791 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:45:29,949 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 23:45:29,950 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 23:45:29,950 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 23:45:29,956 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 23:45:29,958 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 23:45:29,960 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 23:45:29,960 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 23:45:29,963 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 23:45:29,963 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 23:45:29,964 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 23:45:30,060 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:45:30,060 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:45:30,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 23:45:30,145 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 23:45:30,164 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_top_harness.i[4496,4509] [2021-11-03 23:45:30,166 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_top_harness.i[4556,4569] [2021-11-03 23:45:30,167 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 23:45:30,168 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 23:45:30,205 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 23:45:30,216 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:45:30,222 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:45:30,223 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:45:30,224 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:45:30,224 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:45:30,230 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:45:30,230 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:45:30,231 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:45:30,231 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:45:30,264 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 23:45:30,265 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 23:45:30,266 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 23:45:30,267 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 23:45:30,268 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 23:45:30,269 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 23:45:30,269 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 23:45:30,269 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 23:45:30,270 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 23:45:30,270 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 23:45:30,302 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:45:30,303 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:45:30,325 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 23:45:30,488 INFO L208 MainTranslator]: Completed translation [2021-11-03 23:45:30,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:45:30 WrapperNode [2021-11-03 23:45:30,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 23:45:30,490 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 23:45:30,490 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 23:45:30,490 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 23:45:30,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:45:30" (1/1) ... [2021-11-03 23:45:30,567 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:45:30" (1/1) ... [2021-11-03 23:45:30,662 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 23:45:30,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 23:45:30,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 23:45:30,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 23:45:30,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:45:30" (1/1) ... [2021-11-03 23:45:30,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:45:30" (1/1) ... [2021-11-03 23:45:30,680 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:45:30" (1/1) ... [2021-11-03 23:45:30,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:45:30" (1/1) ... [2021-11-03 23:45:30,730 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:45:30" (1/1) ... [2021-11-03 23:45:30,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:45:30" (1/1) ... [2021-11-03 23:45:30,759 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:45:30" (1/1) ... [2021-11-03 23:45:30,770 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 23:45:30,771 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 23:45:30,771 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 23:45:30,771 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 23:45:30,772 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:45:30" (1/1) ... [2021-11-03 23:45:30,777 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 23:45:30,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:45:30,796 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) [2021-11-03 23:45:30,812 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 [2021-11-03 23:45:30,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 23:45:30,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 23:45:30,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 23:45:30,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 23:45:30,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 23:45:30,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 23:45:30,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 23:45:30,840 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-03 23:45:30,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 23:45:30,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 23:45:30,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 23:45:30,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 23:45:34,919 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 23:45:34,919 INFO L299 CfgBuilder]: Removed 280 assume(true) statements. [2021-11-03 23:45:34,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 11:45:34 BoogieIcfgContainer [2021-11-03 23:45:34,922 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 23:45:34,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 23:45:34,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 23:45:34,925 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 23:45:34,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 11:45:29" (1/3) ... [2021-11-03 23:45:34,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d1afb22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 11:45:34, skipping insertion in model container [2021-11-03 23:45:34,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:45:30" (2/3) ... [2021-11-03 23:45:34,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d1afb22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 11:45:34, skipping insertion in model container [2021-11-03 23:45:34,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 11:45:34" (3/3) ... [2021-11-03 23:45:34,927 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_top_harness.i [2021-11-03 23:45:34,931 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 23:45:34,932 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2021-11-03 23:45:34,969 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 23:45:34,977 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 [2021-11-03 23:45:34,977 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-11-03 23:45:34,997 INFO L276 IsEmpty]: Start isEmpty. Operand has 352 states, 334 states have (on average 1.4311377245508983) internal successors, (478), 351 states have internal predecessors, (478), 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) [2021-11-03 23:45:35,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 23:45:35,004 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:45:35,005 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] [2021-11-03 23:45:35,005 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 23:45:35,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:45:35,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1155465246, now seen corresponding path program 1 times [2021-11-03 23:45:35,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:45:35,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078312624] [2021-11-03 23:45:35,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:45:35,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:45:35,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:45:35,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:45:35,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:45:35,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078312624] [2021-11-03 23:45:35,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078312624] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:45:35,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:45:35,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 23:45:35,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331974449] [2021-11-03 23:45:35,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:45:35,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 23:45:35,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:45:35,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 23:45:35,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 23:45:35,538 INFO L87 Difference]: Start difference. First operand has 352 states, 334 states have (on average 1.4311377245508983) internal successors, (478), 351 states have internal predecessors, (478), 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 22.0) internal successors, (44), 2 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) [2021-11-03 23:45:37,606 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:45:39,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:45:39,437 INFO L93 Difference]: Finished difference Result 698 states and 949 transitions. [2021-11-03 23:45:39,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 23:45:39,443 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 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 [2021-11-03 23:45:39,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:45:39,450 INFO L225 Difference]: With dead ends: 698 [2021-11-03 23:45:39,450 INFO L226 Difference]: Without dead ends: 345 [2021-11-03 23:45:39,452 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 [2021-11-03 23:45:39,454 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3381.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.16ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3818.33ms IncrementalHoareTripleChecker+Time [2021-11-03 23:45:39,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 442 Unknown, 0 Unchecked, 5.16ms Time], IncrementalHoareTripleChecker [0 Valid, 441 Invalid, 1 Unknown, 0 Unchecked, 3818.33ms Time] [2021-11-03 23:45:39,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-11-03 23:45:39,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2021-11-03 23:45:39,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 328 states have (on average 1.3170731707317074) internal successors, (432), 344 states have internal predecessors, (432), 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) [2021-11-03 23:45:39,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 432 transitions. [2021-11-03 23:45:39,487 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 432 transitions. Word has length 44 [2021-11-03 23:45:39,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:45:39,487 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 432 transitions. [2021-11-03 23:45:39,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 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) [2021-11-03 23:45:39,487 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 432 transitions. [2021-11-03 23:45:39,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 23:45:39,488 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:45:39,488 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] [2021-11-03 23:45:39,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 23:45:39,489 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 23:45:39,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:45:39,489 INFO L85 PathProgramCache]: Analyzing trace with hash -892659362, now seen corresponding path program 1 times [2021-11-03 23:45:39,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:45:39,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531423468] [2021-11-03 23:45:39,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:45:39,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:45:39,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:45:39,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:45:39,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:45:39,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531423468] [2021-11-03 23:45:39,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531423468] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:45:39,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:45:39,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:45:39,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232665730] [2021-11-03 23:45:39,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:45:39,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:45:39,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:45:39,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:45:39,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:45:39,707 INFO L87 Difference]: Start difference. First operand 345 states and 432 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 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) [2021-11-03 23:45:41,744 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 [] [2021-11-03 23:45:43,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:45:43,660 INFO L93 Difference]: Finished difference Result 610 states and 759 transitions. [2021-11-03 23:45:43,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 23:45:43,661 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 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 [2021-11-03 23:45:43,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:45:43,663 INFO L225 Difference]: With dead ends: 610 [2021-11-03 23:45:43,664 INFO L226 Difference]: Without dead ends: 345 [2021-11-03 23:45:43,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.61ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:45:43,668 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 799 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3483.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 799 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.41ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3850.40ms IncrementalHoareTripleChecker+Time [2021-11-03 23:45:43,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [799 Valid, 0 Invalid, 471 Unknown, 0 Unchecked, 11.41ms Time], IncrementalHoareTripleChecker [3 Valid, 467 Invalid, 1 Unknown, 0 Unchecked, 3850.40ms Time] [2021-11-03 23:45:43,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-11-03 23:45:43,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2021-11-03 23:45:43,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 328 states have (on average 1.3109756097560976) internal successors, (430), 344 states have internal predecessors, (430), 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) [2021-11-03 23:45:43,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 430 transitions. [2021-11-03 23:45:43,691 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 430 transitions. Word has length 44 [2021-11-03 23:45:43,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:45:43,691 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 430 transitions. [2021-11-03 23:45:43,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 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) [2021-11-03 23:45:43,692 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 430 transitions. [2021-11-03 23:45:43,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-03 23:45:43,693 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:45:43,693 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] [2021-11-03 23:45:43,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 23:45:43,694 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 23:45:43,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:45:43,695 INFO L85 PathProgramCache]: Analyzing trace with hash -620500979, now seen corresponding path program 1 times [2021-11-03 23:45:43,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:45:43,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110817970] [2021-11-03 23:45:43,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:45:43,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:45:43,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:45:44,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:45:44,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:45:44,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110817970] [2021-11-03 23:45:44,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110817970] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:45:44,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:45:44,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 23:45:44,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739071932] [2021-11-03 23:45:44,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:45:44,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 23:45:44,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:45:44,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 23:45:44,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:45:44,068 INFO L87 Difference]: Start difference. First operand 345 states and 430 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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) [2021-11-03 23:45:46,115 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 [] [2021-11-03 23:45:49,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:45:49,019 INFO L93 Difference]: Finished difference Result 725 states and 889 transitions. [2021-11-03 23:45:49,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 23:45:49,020 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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 48 [2021-11-03 23:45:49,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:45:49,022 INFO L225 Difference]: With dead ends: 725 [2021-11-03 23:45:49,022 INFO L226 Difference]: Without dead ends: 428 [2021-11-03 23:45:49,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 115.78ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 23:45:49,023 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1096 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4410.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1096 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.05ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4816.43ms IncrementalHoareTripleChecker+Time [2021-11-03 23:45:49,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1096 Valid, 0 Invalid, 819 Unknown, 0 Unchecked, 17.05ms Time], IncrementalHoareTripleChecker [4 Valid, 814 Invalid, 1 Unknown, 0 Unchecked, 4816.43ms Time] [2021-11-03 23:45:49,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-11-03 23:45:49,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 345. [2021-11-03 23:45:49,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 328 states have (on average 1.3048780487804879) internal successors, (428), 344 states have internal predecessors, (428), 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) [2021-11-03 23:45:49,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 428 transitions. [2021-11-03 23:45:49,035 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 428 transitions. Word has length 48 [2021-11-03 23:45:49,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:45:49,035 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 428 transitions. [2021-11-03 23:45:49,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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) [2021-11-03 23:45:49,036 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 428 transitions. [2021-11-03 23:45:49,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-03 23:45:49,037 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:45:49,037 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] [2021-11-03 23:45:49,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 23:45:49,037 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 23:45:49,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:45:49,038 INFO L85 PathProgramCache]: Analyzing trace with hash -582936023, now seen corresponding path program 1 times [2021-11-03 23:45:49,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:45:49,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533727837] [2021-11-03 23:45:49,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:45:49,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:45:49,110 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:45:49,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [85979911] [2021-11-03 23:45:49,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:45:49,110 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:45:49,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:45:49,116 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) [2021-11-03 23:45:49,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 23:45:49,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:45:49,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 2611 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 23:45:49,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:45:50,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:45:50,227 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:45:50,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:45:50,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533727837] [2021-11-03 23:45:50,227 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:45:50,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85979911] [2021-11-03 23:45:50,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85979911] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:45:50,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:45:50,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 23:45:50,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909548060] [2021-11-03 23:45:50,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:45:50,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 23:45:50,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:45:50,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 23:45:50,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 23:45:50,229 INFO L87 Difference]: Start difference. First operand 345 states and 428 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 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) [2021-11-03 23:45:52,282 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 [] [2021-11-03 23:45:54,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:45:54,385 INFO L93 Difference]: Finished difference Result 611 states and 754 transitions. [2021-11-03 23:45:54,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 23:45:54,385 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 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 56 [2021-11-03 23:45:54,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:45:54,387 INFO L225 Difference]: With dead ends: 611 [2021-11-03 23:45:54,387 INFO L226 Difference]: Without dead ends: 345 [2021-11-03 23:45:54,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 174.86ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-03 23:45:54,388 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1567 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3666.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1567 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.33ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3983.78ms IncrementalHoareTripleChecker+Time [2021-11-03 23:45:54,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1567 Valid, 0 Invalid, 530 Unknown, 0 Unchecked, 11.33ms Time], IncrementalHoareTripleChecker [9 Valid, 520 Invalid, 1 Unknown, 0 Unchecked, 3983.78ms Time] [2021-11-03 23:45:54,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-11-03 23:45:54,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2021-11-03 23:45:54,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 328 states have (on average 1.298780487804878) internal successors, (426), 344 states have internal predecessors, (426), 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) [2021-11-03 23:45:54,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 426 transitions. [2021-11-03 23:45:54,404 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 426 transitions. Word has length 56 [2021-11-03 23:45:54,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:45:54,404 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 426 transitions. [2021-11-03 23:45:54,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 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) [2021-11-03 23:45:54,404 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 426 transitions. [2021-11-03 23:45:54,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-03 23:45:54,406 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:45:54,406 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] [2021-11-03 23:45:54,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-03 23:45:54,615 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 [2021-11-03 23:45:54,616 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 23:45:54,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:45:54,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1336520550, now seen corresponding path program 1 times [2021-11-03 23:45:54,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:45:54,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268824354] [2021-11-03 23:45:54,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:45:54,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:45:54,677 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:45:54,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1970914129] [2021-11-03 23:45:54,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:45:54,678 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:45:54,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:45:54,679 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) [2021-11-03 23:45:54,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-03 23:45:55,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:45:55,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 2661 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 23:45:55,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:45:55,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:45:55,833 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:45:55,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:45:55,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268824354] [2021-11-03 23:45:55,834 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:45:55,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970914129] [2021-11-03 23:45:55,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970914129] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:45:55,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:45:55,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 23:45:55,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036546639] [2021-11-03 23:45:55,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:45:55,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 23:45:55,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:45:55,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 23:45:55,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 23:45:55,835 INFO L87 Difference]: Start difference. First operand 345 states and 426 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 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) [2021-11-03 23:45:57,876 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 [] [2021-11-03 23:46:00,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:46:00,919 INFO L93 Difference]: Finished difference Result 627 states and 774 transitions. [2021-11-03 23:46:00,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 23:46:00,919 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 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 68 [2021-11-03 23:46:00,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:46:00,921 INFO L225 Difference]: With dead ends: 627 [2021-11-03 23:46:00,921 INFO L226 Difference]: Without dead ends: 345 [2021-11-03 23:46:00,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 311.39ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-11-03 23:46:00,924 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1753 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4331.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1753 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.55ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4789.64ms IncrementalHoareTripleChecker+Time [2021-11-03 23:46:00,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1753 Valid, 0 Invalid, 756 Unknown, 0 Unchecked, 15.55ms Time], IncrementalHoareTripleChecker [21 Valid, 734 Invalid, 1 Unknown, 0 Unchecked, 4789.64ms Time] [2021-11-03 23:46:00,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-11-03 23:46:00,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2021-11-03 23:46:00,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 328 states have (on average 1.2926829268292683) internal successors, (424), 344 states have internal predecessors, (424), 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) [2021-11-03 23:46:00,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 424 transitions. [2021-11-03 23:46:00,940 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 424 transitions. Word has length 68 [2021-11-03 23:46:00,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:46:00,941 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 424 transitions. [2021-11-03 23:46:00,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 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) [2021-11-03 23:46:00,941 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 424 transitions. [2021-11-03 23:46:00,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-03 23:46:00,946 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:46:00,946 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] [2021-11-03 23:46:00,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-03 23:46:01,152 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 [2021-11-03 23:46:01,153 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 23:46:01,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:46:01,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1065001986, now seen corresponding path program 1 times [2021-11-03 23:46:01,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:46:01,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820982180] [2021-11-03 23:46:01,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:46:01,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:46:01,228 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:46:01,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2030082425] [2021-11-03 23:46:01,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:46:01,229 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:46:01,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:46:01,230 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) [2021-11-03 23:46:01,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-03 23:46:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:46:01,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 2756 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 23:46:01,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:46:02,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:46:02,421 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:46:02,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:46:02,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820982180] [2021-11-03 23:46:02,421 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:46:02,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030082425] [2021-11-03 23:46:02,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030082425] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:46:02,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:46:02,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 23:46:02,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733250460] [2021-11-03 23:46:02,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:46:02,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 23:46:02,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:46:02,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 23:46:02,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 23:46:02,423 INFO L87 Difference]: Start difference. First operand 345 states and 424 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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) [2021-11-03 23:46:04,460 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 [] [2021-11-03 23:46:08,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:46:08,370 INFO L93 Difference]: Finished difference Result 683 states and 829 transitions. [2021-11-03 23:46:08,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 23:46:08,371 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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 76 [2021-11-03 23:46:08,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:46:08,373 INFO L225 Difference]: With dead ends: 683 [2021-11-03 23:46:08,373 INFO L226 Difference]: Without dead ends: 452 [2021-11-03 23:46:08,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 185.78ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-03 23:46:08,374 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1173 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5281.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.27ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5745.77ms IncrementalHoareTripleChecker+Time [2021-11-03 23:46:08,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1173 Valid, 0 Invalid, 1236 Unknown, 0 Unchecked, 13.27ms Time], IncrementalHoareTripleChecker [10 Valid, 1225 Invalid, 1 Unknown, 0 Unchecked, 5745.77ms Time] [2021-11-03 23:46:08,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-11-03 23:46:08,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 345. [2021-11-03 23:46:08,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 328 states have (on average 1.2835365853658536) internal successors, (421), 344 states have internal predecessors, (421), 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) [2021-11-03 23:46:08,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 421 transitions. [2021-11-03 23:46:08,411 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 421 transitions. Word has length 76 [2021-11-03 23:46:08,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:46:08,411 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 421 transitions. [2021-11-03 23:46:08,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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) [2021-11-03 23:46:08,412 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 421 transitions. [2021-11-03 23:46:08,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-03 23:46:08,412 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:46:08,413 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] [2021-11-03 23:46:08,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-03 23:46:08,615 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 [2021-11-03 23:46:08,616 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 23:46:08,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:46:08,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1734654266, now seen corresponding path program 1 times [2021-11-03 23:46:08,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:46:08,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214150691] [2021-11-03 23:46:08,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:46:08,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:46:08,675 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:46:08,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [600227998] [2021-11-03 23:46:08,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:46:08,676 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:46:08,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:46:08,677 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) [2021-11-03 23:46:08,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-03 23:46:09,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:46:09,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 2946 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-03 23:46:09,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:46:09,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:46:09,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:46:09,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:46:09,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214150691] [2021-11-03 23:46:09,681 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:46:09,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600227998] [2021-11-03 23:46:09,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600227998] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:46:09,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:46:09,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 23:46:09,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514637065] [2021-11-03 23:46:09,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:46:09,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 23:46:09,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:46:09,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 23:46:09,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:46:09,682 INFO L87 Difference]: Start difference. First operand 345 states and 421 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 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) [2021-11-03 23:46:11,778 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:46:20,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:46:20,196 INFO L93 Difference]: Finished difference Result 872 states and 1057 transitions. [2021-11-03 23:46:20,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 23:46:20,197 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 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 92 [2021-11-03 23:46:20,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:46:20,198 INFO L225 Difference]: With dead ends: 872 [2021-11-03 23:46:20,198 INFO L226 Difference]: Without dead ends: 605 [2021-11-03 23:46:20,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 85.29ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 23:46:20,199 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 325 mSDsluCounter, 1794 mSDsCounter, 0 mSdLazyCounter, 2548 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9587.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.88ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 2548 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10342.64ms IncrementalHoareTripleChecker+Time [2021-11-03 23:46:20,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 0 Invalid, 2555 Unknown, 0 Unchecked, 22.88ms Time], IncrementalHoareTripleChecker [6 Valid, 2548 Invalid, 1 Unknown, 0 Unchecked, 10342.64ms Time] [2021-11-03 23:46:20,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2021-11-03 23:46:20,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 357. [2021-11-03 23:46:20,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 340 states have (on average 1.285294117647059) internal successors, (437), 356 states have internal predecessors, (437), 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) [2021-11-03 23:46:20,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 437 transitions. [2021-11-03 23:46:20,211 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 437 transitions. Word has length 92 [2021-11-03 23:46:20,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:46:20,211 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 437 transitions. [2021-11-03 23:46:20,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 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) [2021-11-03 23:46:20,211 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 437 transitions. [2021-11-03 23:46:20,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-03 23:46:20,212 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:46:20,212 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] [2021-11-03 23:46:20,236 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-03 23:46:20,426 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 [2021-11-03 23:46:20,427 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 23:46:20,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:46:20,427 INFO L85 PathProgramCache]: Analyzing trace with hash 621150984, now seen corresponding path program 1 times [2021-11-03 23:46:20,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:46:20,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034072457] [2021-11-03 23:46:20,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:46:20,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:46:20,490 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:46:20,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [665580093] [2021-11-03 23:46:20,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:46:20,491 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:46:20,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:46:20,492 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) [2021-11-03 23:46:20,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-03 23:46:21,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:46:21,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 2951 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 23:46:21,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:46:21,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:46:21,839 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:46:21,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:46:21,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034072457] [2021-11-03 23:46:21,839 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:46:21,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665580093] [2021-11-03 23:46:21,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665580093] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:46:21,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:46:21,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 23:46:21,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111234155] [2021-11-03 23:46:21,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:46:21,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 23:46:21,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:46:21,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 23:46:21,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 23:46:21,840 INFO L87 Difference]: Start difference. First operand 357 states and 437 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 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) [2021-11-03 23:46:24,069 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 [] [2021-11-03 23:46:32,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:46:32,896 INFO L93 Difference]: Finished difference Result 895 states and 1091 transitions. [2021-11-03 23:46:32,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 23:46:32,896 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 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 92 [2021-11-03 23:46:32,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:46:32,899 INFO L225 Difference]: With dead ends: 895 [2021-11-03 23:46:32,899 INFO L226 Difference]: Without dead ends: 613 [2021-11-03 23:46:32,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 430.64ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-03 23:46:32,900 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 288 mSDsluCounter, 1699 mSDsCounter, 0 mSdLazyCounter, 2831 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9874.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.67ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2831 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10691.52ms IncrementalHoareTripleChecker+Time [2021-11-03 23:46:32,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 0 Invalid, 2843 Unknown, 0 Unchecked, 21.67ms Time], IncrementalHoareTripleChecker [11 Valid, 2831 Invalid, 1 Unknown, 0 Unchecked, 10691.52ms Time] [2021-11-03 23:46:32,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-11-03 23:46:32,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 365. [2021-11-03 23:46:32,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 348 states have (on average 1.2844827586206897) internal successors, (447), 364 states have internal predecessors, (447), 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) [2021-11-03 23:46:32,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 447 transitions. [2021-11-03 23:46:32,910 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 447 transitions. Word has length 92 [2021-11-03 23:46:32,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:46:32,910 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 447 transitions. [2021-11-03 23:46:32,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 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) [2021-11-03 23:46:32,911 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 447 transitions. [2021-11-03 23:46:32,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-03 23:46:32,911 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:46:32,912 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] [2021-11-03 23:46:32,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-03 23:46:33,134 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 [2021-11-03 23:46:33,135 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 23:46:33,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:46:33,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1745543610, now seen corresponding path program 1 times [2021-11-03 23:46:33,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:46:33,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859591621] [2021-11-03 23:46:33,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:46:33,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:46:33,202 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:46:33,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [563563728] [2021-11-03 23:46:33,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:46:33,203 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:46:33,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:46:33,204 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) [2021-11-03 23:46:33,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-03 23:46:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:46:33,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 2948 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 23:46:33,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:46:34,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:46:34,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:46:34,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:46:34,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859591621] [2021-11-03 23:46:34,146 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:46:34,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563563728] [2021-11-03 23:46:34,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563563728] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:46:34,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:46:34,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:46:34,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482634701] [2021-11-03 23:46:34,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:46:34,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:46:34,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:46:34,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:46:34,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:46:34,147 INFO L87 Difference]: Start difference. First operand 365 states and 447 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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) [2021-11-03 23:46:36,187 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 [] [2021-11-03 23:46:40,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:46:40,866 INFO L93 Difference]: Finished difference Result 667 states and 814 transitions. [2021-11-03 23:46:40,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 23:46:40,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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 92 [2021-11-03 23:46:40,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:46:40,867 INFO L225 Difference]: With dead ends: 667 [2021-11-03 23:46:40,868 INFO L226 Difference]: Without dead ends: 381 [2021-11-03 23:46:40,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.27ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:46:40,870 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6043.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.78ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6612.07ms IncrementalHoareTripleChecker+Time [2021-11-03 23:46:40,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 0 Invalid, 1270 Unknown, 0 Unchecked, 9.78ms Time], IncrementalHoareTripleChecker [5 Valid, 1264 Invalid, 1 Unknown, 0 Unchecked, 6612.07ms Time] [2021-11-03 23:46:40,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-11-03 23:46:40,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 373. [2021-11-03 23:46:40,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 356 states have (on average 1.2780898876404494) internal successors, (455), 372 states have internal predecessors, (455), 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) [2021-11-03 23:46:40,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 455 transitions. [2021-11-03 23:46:40,881 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 455 transitions. Word has length 92 [2021-11-03 23:46:40,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:46:40,881 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 455 transitions. [2021-11-03 23:46:40,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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) [2021-11-03 23:46:40,882 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 455 transitions. [2021-11-03 23:46:40,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-03 23:46:40,882 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:46:40,882 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] [2021-11-03 23:46:40,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-03 23:46:41,099 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 [2021-11-03 23:46:41,099 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 23:46:41,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:46:41,100 INFO L85 PathProgramCache]: Analyzing trace with hash 500035844, now seen corresponding path program 1 times [2021-11-03 23:46:41,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:46:41,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336065212] [2021-11-03 23:46:41,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:46:41,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:46:41,168 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:46:41,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2051183533] [2021-11-03 23:46:41,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:46:41,168 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:46:41,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:46:41,169 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) [2021-11-03 23:46:41,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-03 23:46:41,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:46:41,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 2943 conjuncts, 62 conjunts are in the unsatisfiable core [2021-11-03 23:46:41,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:46:43,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:46:43,576 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:46:43,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:46:43,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336065212] [2021-11-03 23:46:43,577 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:46:43,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051183533] [2021-11-03 23:46:43,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051183533] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:46:43,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:46:43,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-03 23:46:43,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022119170] [2021-11-03 23:46:43,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:46:43,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 23:46:43,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:46:43,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 23:46:43,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-03 23:46:43,578 INFO L87 Difference]: Start difference. First operand 373 states and 455 transitions. Second operand has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 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) [2021-11-03 23:46:46,474 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.89s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:47:07,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:47:07,607 INFO L93 Difference]: Finished difference Result 1201 states and 1452 transitions. [2021-11-03 23:47:07,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-03 23:47:07,608 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 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 92 [2021-11-03 23:47:07,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:47:07,610 INFO L225 Difference]: With dead ends: 1201 [2021-11-03 23:47:07,610 INFO L226 Difference]: Without dead ends: 920 [2021-11-03 23:47:07,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 2467.64ms TimeCoverageRelationStatistics Valid=246, Invalid=746, Unknown=0, NotChecked=0, Total=992 [2021-11-03 23:47:07,612 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2317 mSDsluCounter, 4372 mSDsCounter, 0 mSdLazyCounter, 6399 mSolverCounterSat, 75 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20501.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2317 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 69.29ms SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 6399 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21934.73ms IncrementalHoareTripleChecker+Time [2021-11-03 23:47:07,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2317 Valid, 0 Invalid, 6475 Unknown, 0 Unchecked, 69.29ms Time], IncrementalHoareTripleChecker [75 Valid, 6399 Invalid, 1 Unknown, 0 Unchecked, 21934.73ms Time] [2021-11-03 23:47:07,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2021-11-03 23:47:07,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 395. [2021-11-03 23:47:07,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 378 states have (on average 1.283068783068783) internal successors, (485), 394 states have internal predecessors, (485), 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) [2021-11-03 23:47:07,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 485 transitions. [2021-11-03 23:47:07,625 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 485 transitions. Word has length 92 [2021-11-03 23:47:07,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:47:07,625 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 485 transitions. [2021-11-03 23:47:07,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 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) [2021-11-03 23:47:07,625 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 485 transitions. [2021-11-03 23:47:07,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-03 23:47:07,626 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:47:07,626 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] [2021-11-03 23:47:07,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-03 23:47:07,840 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 [2021-11-03 23:47:07,840 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 23:47:07,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:47:07,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1886821254, now seen corresponding path program 1 times [2021-11-03 23:47:07,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:47:07,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183911805] [2021-11-03 23:47:07,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:47:07,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:47:07,901 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:47:07,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1838442924] [2021-11-03 23:47:07,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:47:07,902 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:47:07,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:47:07,903 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) [2021-11-03 23:47:07,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-03 23:47:08,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:47:08,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 2938 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 23:47:08,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:47:08,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:47:08,781 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:47:08,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:47:08,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183911805] [2021-11-03 23:47:08,781 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:47:08,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838442924] [2021-11-03 23:47:08,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838442924] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:47:08,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:47:08,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:47:08,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462640864] [2021-11-03 23:47:08,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:47:08,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:47:08,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:47:08,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:47:08,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:47:08,783 INFO L87 Difference]: Start difference. First operand 395 states and 485 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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) [2021-11-03 23:47:11,664 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.88s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:47:16,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:47:16,235 INFO L93 Difference]: Finished difference Result 794 states and 984 transitions. [2021-11-03 23:47:16,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 23:47:16,236 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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 92 [2021-11-03 23:47:16,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:47:16,246 INFO L225 Difference]: With dead ends: 794 [2021-11-03 23:47:16,246 INFO L226 Difference]: Without dead ends: 446 [2021-11-03 23:47:16,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.29ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:47:16,247 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 77 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 1315 mSolverCounterSat, 41 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6712.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.91ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1315 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7359.49ms IncrementalHoareTripleChecker+Time [2021-11-03 23:47:16,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 0 Invalid, 1357 Unknown, 0 Unchecked, 9.91ms Time], IncrementalHoareTripleChecker [41 Valid, 1315 Invalid, 1 Unknown, 0 Unchecked, 7359.49ms Time] [2021-11-03 23:47:16,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2021-11-03 23:47:16,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 413. [2021-11-03 23:47:16,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 396 states have (on average 1.2651515151515151) internal successors, (501), 412 states have internal predecessors, (501), 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) [2021-11-03 23:47:16,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 501 transitions. [2021-11-03 23:47:16,262 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 501 transitions. Word has length 92 [2021-11-03 23:47:16,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:47:16,262 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 501 transitions. [2021-11-03 23:47:16,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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) [2021-11-03 23:47:16,262 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 501 transitions. [2021-11-03 23:47:16,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-03 23:47:16,263 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:47:16,263 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:47:16,287 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-03 23:47:16,464 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 [2021-11-03 23:47:16,465 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 23:47:16,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:47:16,465 INFO L85 PathProgramCache]: Analyzing trace with hash -547775062, now seen corresponding path program 1 times [2021-11-03 23:47:16,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:47:16,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329668139] [2021-11-03 23:47:16,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:47:16,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:47:16,548 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:47:16,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [209243946] [2021-11-03 23:47:16,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:47:16,549 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:47:16,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:47:16,550 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) [2021-11-03 23:47:16,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-03 23:47:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:47:18,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 2948 conjuncts, 141 conjunts are in the unsatisfiable core [2021-11-03 23:47:18,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:47:18,208 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 [2021-11-03 23:47:19,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:47:19,004 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 [2021-11-03 23:47:19,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:47:19,036 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 [2021-11-03 23:47:19,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:47:19,134 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 [2021-11-03 23:47:19,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:47:19,157 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 [2021-11-03 23:47:19,593 INFO L354 Elim1Store]: treesize reduction 64, result has 19.0 percent of original size [2021-11-03 23:47:19,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 33 [2021-11-03 23:47:19,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:47:19,910 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 63 treesize of output 54 [2021-11-03 23:47:19,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:47:19,923 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 48 treesize of output 39 [2021-11-03 23:47:20,648 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-11-03 23:47:20,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 33 [2021-11-03 23:47:21,581 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-11-03 23:47:21,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 25 treesize of output 29 [2021-11-03 23:47:21,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:47:21,899 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-03 23:47:21,900 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 1 case distinctions, treesize of input 67 treesize of output 58 [2021-11-03 23:47:21,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:47:21,947 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-03 23:47:21,948 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 1 case distinctions, treesize of input 52 treesize of output 43 [2021-11-03 23:47:22,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:47:22,764 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:47:22,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:47:22,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329668139] [2021-11-03 23:47:22,765 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:47:22,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209243946] [2021-11-03 23:47:22,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209243946] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:47:22,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:47:22,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-03 23:47:22,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603713027] [2021-11-03 23:47:22,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:47:22,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-03 23:47:22,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:47:22,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-03 23:47:22,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-11-03 23:47:22,768 INFO L87 Difference]: Start difference. First operand 413 states and 501 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 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) [2021-11-03 23:47:25,641 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.87s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:47:38,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:47:38,329 INFO L93 Difference]: Finished difference Result 839 states and 1022 transitions. [2021-11-03 23:47:38,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-03 23:47:38,330 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 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 94 [2021-11-03 23:47:38,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:47:38,331 INFO L225 Difference]: With dead ends: 839 [2021-11-03 23:47:38,332 INFO L226 Difference]: Without dead ends: 499 [2021-11-03 23:47:38,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 2786.77ms TimeCoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2021-11-03 23:47:38,333 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 170 mSDsluCounter, 2770 mSDsCounter, 0 mSdLazyCounter, 3246 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12858.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.90ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 3246 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 895 IncrementalHoareTripleChecker+Unchecked, 14110.66ms IncrementalHoareTripleChecker+Time [2021-11-03 23:47:38,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 0 Invalid, 4162 Unknown, 0 Unchecked, 33.90ms Time], IncrementalHoareTripleChecker [20 Valid, 3246 Invalid, 1 Unknown, 895 Unchecked, 14110.66ms Time] [2021-11-03 23:47:38,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2021-11-03 23:47:38,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 437. [2021-11-03 23:47:38,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 420 states have (on average 1.2619047619047619) internal successors, (530), 436 states have internal predecessors, (530), 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) [2021-11-03 23:47:38,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 530 transitions. [2021-11-03 23:47:38,346 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 530 transitions. Word has length 94 [2021-11-03 23:47:38,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:47:38,346 INFO L470 AbstractCegarLoop]: Abstraction has 437 states and 530 transitions. [2021-11-03 23:47:38,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 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) [2021-11-03 23:47:38,346 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 530 transitions. [2021-11-03 23:47:38,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-03 23:47:38,347 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:47:38,347 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:47:38,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-03 23:47:38,563 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 [2021-11-03 23:47:38,563 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 23:47:38,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:47:38,564 INFO L85 PathProgramCache]: Analyzing trace with hash 713142188, now seen corresponding path program 1 times [2021-11-03 23:47:38,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:47:38,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527991366] [2021-11-03 23:47:38,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:47:38,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:47:38,612 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:47:38,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2087034030] [2021-11-03 23:47:38,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:47:38,613 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:47:38,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:47:38,614 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) [2021-11-03 23:47:38,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-03 23:47:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:47:39,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 2943 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 23:47:39,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:47:39,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:47:39,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:47:39,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:47:39,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527991366] [2021-11-03 23:47:39,616 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:47:39,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087034030] [2021-11-03 23:47:39,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087034030] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:47:39,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:47:39,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 23:47:39,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496757804] [2021-11-03 23:47:39,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:47:39,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 23:47:39,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:47:39,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 23:47:39,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:47:39,617 INFO L87 Difference]: Start difference. First operand 437 states and 530 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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) [2021-11-03 23:47:42,268 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.65s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:47:49,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:47:49,102 INFO L93 Difference]: Finished difference Result 1026 states and 1236 transitions. [2021-11-03 23:47:49,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 23:47:49,103 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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 94 [2021-11-03 23:47:49,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:47:49,104 INFO L225 Difference]: With dead ends: 1026 [2021-11-03 23:47:49,104 INFO L226 Difference]: Without dead ends: 661 [2021-11-03 23:47:49,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 236.28ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 23:47:49,106 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 249 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 2247 mSolverCounterSat, 73 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8396.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.25ms SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 2247 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9220.72ms IncrementalHoareTripleChecker+Time [2021-11-03 23:47:49,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 0 Invalid, 2321 Unknown, 0 Unchecked, 14.25ms Time], IncrementalHoareTripleChecker [73 Valid, 2247 Invalid, 1 Unknown, 0 Unchecked, 9220.72ms Time] [2021-11-03 23:47:49,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2021-11-03 23:47:49,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 448. [2021-11-03 23:47:49,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 431 states have (on average 1.2552204176334107) internal successors, (541), 447 states have internal predecessors, (541), 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) [2021-11-03 23:47:49,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 541 transitions. [2021-11-03 23:47:49,120 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 541 transitions. Word has length 94 [2021-11-03 23:47:49,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:47:49,121 INFO L470 AbstractCegarLoop]: Abstraction has 448 states and 541 transitions. [2021-11-03 23:47:49,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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) [2021-11-03 23:47:49,122 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 541 transitions. [2021-11-03 23:47:49,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-03 23:47:49,122 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:47:49,123 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:47:49,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-03 23:47:49,335 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 [2021-11-03 23:47:49,336 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 23:47:49,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:47:49,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1589161194, now seen corresponding path program 1 times [2021-11-03 23:47:49,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:47:49,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729301727] [2021-11-03 23:47:49,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:47:49,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:47:49,387 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:47:49,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [479991330] [2021-11-03 23:47:49,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:47:49,388 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:47:49,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:47:49,389 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) [2021-11-03 23:47:49,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-03 23:47:50,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:47:50,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 2948 conjuncts, 138 conjunts are in the unsatisfiable core [2021-11-03 23:47:50,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:47:50,578 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 [2021-11-03 23:47:51,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:47:51,587 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 [2021-11-03 23:47:51,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:47:51,612 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 [2021-11-03 23:47:51,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:47:51,712 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 [2021-11-03 23:47:51,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:47:51,753 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 [2021-11-03 23:47:52,128 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-03 23:47:52,128 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 [2021-11-03 23:47:52,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:47:52,407 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-03 23:47:52,407 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 67 treesize of output 58 [2021-11-03 23:47:52,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:47:52,478 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-03 23:47:52,479 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 52 treesize of output 43 [2021-11-03 23:47:53,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:47:53,785 INFO L354 Elim1Store]: treesize reduction 54, result has 31.6 percent of original size [2021-11-03 23:47:53,785 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 66 treesize of output 65 [2021-11-03 23:47:53,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:47:53,889 INFO L354 Elim1Store]: treesize reduction 54, result has 31.6 percent of original size [2021-11-03 23:47:53,889 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 59 treesize of output 58 [2021-11-03 23:47:55,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:47:55,107 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:47:55,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:47:55,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729301727] [2021-11-03 23:47:55,107 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:47:55,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479991330] [2021-11-03 23:47:55,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479991330] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:47:55,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:47:55,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-03 23:47:55,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602168275] [2021-11-03 23:47:55,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:47:55,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-03 23:47:55,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:47:55,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-03 23:47:55,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2021-11-03 23:47:55,110 INFO L87 Difference]: Start difference. First operand 448 states and 541 transitions. Second operand has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 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) [2021-11-03 23:47:57,150 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 [] [2021-11-03 23:48:44,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:48:44,572 INFO L93 Difference]: Finished difference Result 1625 states and 1946 transitions. [2021-11-03 23:48:44,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-03 23:48:44,573 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 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 94 [2021-11-03 23:48:44,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:48:44,576 INFO L225 Difference]: With dead ends: 1625 [2021-11-03 23:48:44,576 INFO L226 Difference]: Without dead ends: 1287 [2021-11-03 23:48:44,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 4605.81ms TimeCoverageRelationStatistics Valid=250, Invalid=1390, Unknown=0, NotChecked=0, Total=1640 [2021-11-03 23:48:44,577 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1345 mSDsluCounter, 8504 mSDsCounter, 0 mSdLazyCounter, 12595 mSolverCounterSat, 59 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41812.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1345 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 12655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 129.41ms SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 12595 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46008.53ms IncrementalHoareTripleChecker+Time [2021-11-03 23:48:44,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1345 Valid, 0 Invalid, 12655 Unknown, 0 Unchecked, 129.41ms Time], IncrementalHoareTripleChecker [59 Valid, 12595 Invalid, 1 Unknown, 0 Unchecked, 46008.53ms Time] [2021-11-03 23:48:44,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2021-11-03 23:48:44,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 725. [2021-11-03 23:48:44,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 708 states have (on average 1.2514124293785311) internal successors, (886), 724 states have internal predecessors, (886), 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) [2021-11-03 23:48:44,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 886 transitions. [2021-11-03 23:48:44,601 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 886 transitions. Word has length 94 [2021-11-03 23:48:44,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:48:44,602 INFO L470 AbstractCegarLoop]: Abstraction has 725 states and 886 transitions. [2021-11-03 23:48:44,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 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) [2021-11-03 23:48:44,602 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 886 transitions. [2021-11-03 23:48:44,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-03 23:48:44,603 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:48:44,603 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:48:44,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-03 23:48:44,816 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 [2021-11-03 23:48:44,816 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 23:48:44,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:48:44,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1229196076, now seen corresponding path program 1 times [2021-11-03 23:48:44,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:48:44,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572378531] [2021-11-03 23:48:44,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:48:44,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:48:44,864 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:48:44,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [305165736] [2021-11-03 23:48:44,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:48:44,864 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:48:44,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:48:44,865 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) [2021-11-03 23:48:44,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-03 23:48:45,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:48:45,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 2953 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 23:48:45,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:48:45,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:48:45,743 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:48:45,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:48:45,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572378531] [2021-11-03 23:48:45,743 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:48:45,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305165736] [2021-11-03 23:48:45,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305165736] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:48:45,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:48:45,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:48:45,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310399012] [2021-11-03 23:48:45,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:48:45,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:48:45,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:48:45,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:48:45,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:48:45,744 INFO L87 Difference]: Start difference. First operand 725 states and 886 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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) [2021-11-03 23:48:48,820 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:48:53,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:48:53,785 INFO L93 Difference]: Finished difference Result 1261 states and 1535 transitions. [2021-11-03 23:48:53,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 23:48:53,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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 94 [2021-11-03 23:48:53,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:48:53,788 INFO L225 Difference]: With dead ends: 1261 [2021-11-03 23:48:53,788 INFO L226 Difference]: Without dead ends: 716 [2021-11-03 23:48:53,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.99ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:48:53,800 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6987.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.37ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7928.63ms IncrementalHoareTripleChecker+Time [2021-11-03 23:48:53,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 0 Invalid, 1275 Unknown, 0 Unchecked, 8.37ms Time], IncrementalHoareTripleChecker [5 Valid, 1269 Invalid, 1 Unknown, 0 Unchecked, 7928.63ms Time] [2021-11-03 23:48:53,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2021-11-03 23:48:53,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 707. [2021-11-03 23:48:53,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 690 states have (on average 1.2405797101449276) internal successors, (856), 706 states have internal predecessors, (856), 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) [2021-11-03 23:48:53,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 856 transitions. [2021-11-03 23:48:53,825 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 856 transitions. Word has length 94 [2021-11-03 23:48:53,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:48:53,825 INFO L470 AbstractCegarLoop]: Abstraction has 707 states and 856 transitions. [2021-11-03 23:48:53,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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) [2021-11-03 23:48:53,826 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 856 transitions. [2021-11-03 23:48:53,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-03 23:48:53,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:48:53,826 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:48:53,852 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-11-03 23:48:54,043 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 [2021-11-03 23:48:54,044 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 23:48:54,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:48:54,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1320642810, now seen corresponding path program 1 times [2021-11-03 23:48:54,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:48:54,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368953163] [2021-11-03 23:48:54,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:48:54,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:48:54,110 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:48:54,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [305368711] [2021-11-03 23:48:54,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:48:54,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:48:54,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:48:54,112 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) [2021-11-03 23:48:54,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-03 23:48:54,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:48:54,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 2970 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 23:48:54,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:48:55,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:48:55,099 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:48:55,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:48:55,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368953163] [2021-11-03 23:48:55,099 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:48:55,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305368711] [2021-11-03 23:48:55,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305368711] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:48:55,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:48:55,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 23:48:55,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108120962] [2021-11-03 23:48:55,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:48:55,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 23:48:55,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:48:55,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 23:48:55,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 23:48:55,101 INFO L87 Difference]: Start difference. First operand 707 states and 856 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2021-11-03 23:48:57,363 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:49:01,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:49:01,243 INFO L93 Difference]: Finished difference Result 1712 states and 2067 transitions. [2021-11-03 23:49:01,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 23:49:01,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 95 [2021-11-03 23:49:01,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:49:01,246 INFO L225 Difference]: With dead ends: 1712 [2021-11-03 23:49:01,246 INFO L226 Difference]: Without dead ends: 1211 [2021-11-03 23:49:01,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.14ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 23:49:01,247 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 322 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5247.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.30ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6006.30ms IncrementalHoareTripleChecker+Time [2021-11-03 23:49:01,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 0 Invalid, 842 Unknown, 0 Unchecked, 10.30ms Time], IncrementalHoareTripleChecker [3 Valid, 838 Invalid, 1 Unknown, 0 Unchecked, 6006.30ms Time] [2021-11-03 23:49:01,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2021-11-03 23:49:01,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 710. [2021-11-03 23:49:01,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 693 states have (on average 1.2395382395382395) internal successors, (859), 709 states have internal predecessors, (859), 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) [2021-11-03 23:49:01,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 859 transitions. [2021-11-03 23:49:01,277 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 859 transitions. Word has length 95 [2021-11-03 23:49:01,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:49:01,278 INFO L470 AbstractCegarLoop]: Abstraction has 710 states and 859 transitions. [2021-11-03 23:49:01,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2021-11-03 23:49:01,278 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 859 transitions. [2021-11-03 23:49:01,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-03 23:49:01,279 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:49:01,279 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:49:01,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-03 23:49:01,499 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 [2021-11-03 23:49:01,499 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 23:49:01,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:49:01,501 INFO L85 PathProgramCache]: Analyzing trace with hash 219542460, now seen corresponding path program 1 times [2021-11-03 23:49:01,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:49:01,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438629550] [2021-11-03 23:49:01,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:49:01,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:49:01,565 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:49:01,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1853598196] [2021-11-03 23:49:01,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:49:01,566 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:49:01,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:49:01,567 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) [2021-11-03 23:49:01,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-03 23:49:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:49:02,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 2973 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-03 23:49:02,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:49:02,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:49:02,658 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:49:02,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:49:02,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438629550] [2021-11-03 23:49:02,658 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:49:02,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853598196] [2021-11-03 23:49:02,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853598196] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:49:02,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:49:02,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 23:49:02,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660497717] [2021-11-03 23:49:02,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:49:02,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 23:49:02,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:49:02,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 23:49:02,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 23:49:02,660 INFO L87 Difference]: Start difference. First operand 710 states and 859 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 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) [2021-11-03 23:49:04,704 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 [] [2021-11-03 23:49:12,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:49:12,095 INFO L93 Difference]: Finished difference Result 1273 states and 1525 transitions. [2021-11-03 23:49:12,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 23:49:12,095 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 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 95 [2021-11-03 23:49:12,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:49:12,097 INFO L225 Difference]: With dead ends: 1273 [2021-11-03 23:49:12,097 INFO L226 Difference]: Without dead ends: 773 [2021-11-03 23:49:12,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 264.18ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-03 23:49:12,099 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 205 mSDsluCounter, 2137 mSDsCounter, 0 mSdLazyCounter, 2697 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8266.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.58ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2697 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9186.77ms IncrementalHoareTripleChecker+Time [2021-11-03 23:49:12,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 0 Invalid, 2708 Unknown, 0 Unchecked, 19.58ms Time], IncrementalHoareTripleChecker [10 Valid, 2697 Invalid, 1 Unknown, 0 Unchecked, 9186.77ms Time] [2021-11-03 23:49:12,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2021-11-03 23:49:12,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 710. [2021-11-03 23:49:12,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 693 states have (on average 1.2366522366522366) internal successors, (857), 709 states have internal predecessors, (857), 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) [2021-11-03 23:49:12,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 857 transitions. [2021-11-03 23:49:12,122 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 857 transitions. Word has length 95 [2021-11-03 23:49:12,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:49:12,122 INFO L470 AbstractCegarLoop]: Abstraction has 710 states and 857 transitions. [2021-11-03 23:49:12,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 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) [2021-11-03 23:49:12,122 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 857 transitions. [2021-11-03 23:49:12,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-03 23:49:12,123 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:49:12,123 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:49:12,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-03 23:49:12,337 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 [2021-11-03 23:49:12,337 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 23:49:12,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:49:12,337 INFO L85 PathProgramCache]: Analyzing trace with hash -883161754, now seen corresponding path program 1 times [2021-11-03 23:49:12,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:49:12,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866184747] [2021-11-03 23:49:12,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:49:12,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:49:12,393 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:49:12,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1777231223] [2021-11-03 23:49:12,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:49:12,394 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:49:12,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:49:12,395 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) [2021-11-03 23:49:12,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-03 23:49:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:49:13,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 2957 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-03 23:49:13,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:49:13,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:49:13,813 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:49:13,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:49:13,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866184747] [2021-11-03 23:49:13,813 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:49:13,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777231223] [2021-11-03 23:49:13,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777231223] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:49:13,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:49:13,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 23:49:13,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689523280] [2021-11-03 23:49:13,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:49:13,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 23:49:13,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:49:13,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 23:49:13,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-03 23:49:13,815 INFO L87 Difference]: Start difference. First operand 710 states and 857 transitions. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 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) [2021-11-03 23:49:17,437 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.62s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:49:44,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:49:44,844 INFO L93 Difference]: Finished difference Result 2097 states and 2491 transitions. [2021-11-03 23:49:44,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-03 23:49:44,844 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 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 96 [2021-11-03 23:49:44,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:49:44,847 INFO L225 Difference]: With dead ends: 2097 [2021-11-03 23:49:44,847 INFO L226 Difference]: Without dead ends: 1339 [2021-11-03 23:49:44,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 1483.75ms TimeCoverageRelationStatistics Valid=256, Invalid=800, Unknown=0, NotChecked=0, Total=1056 [2021-11-03 23:49:44,849 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1660 mSDsluCounter, 5986 mSDsCounter, 0 mSdLazyCounter, 7884 mSolverCounterSat, 67 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26905.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1660 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 80.08ms SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 7884 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29493.54ms IncrementalHoareTripleChecker+Time [2021-11-03 23:49:44,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1660 Valid, 0 Invalid, 7952 Unknown, 0 Unchecked, 80.08ms Time], IncrementalHoareTripleChecker [67 Valid, 7884 Invalid, 1 Unknown, 0 Unchecked, 29493.54ms Time] [2021-11-03 23:49:44,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2021-11-03 23:49:44,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 456. [2021-11-03 23:49:44,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 439 states have (on average 1.2277904328018223) internal successors, (539), 455 states have internal predecessors, (539), 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) [2021-11-03 23:49:44,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 539 transitions. [2021-11-03 23:49:44,878 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 539 transitions. Word has length 96 [2021-11-03 23:49:44,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:49:44,879 INFO L470 AbstractCegarLoop]: Abstraction has 456 states and 539 transitions. [2021-11-03 23:49:44,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 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) [2021-11-03 23:49:44,879 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 539 transitions. [2021-11-03 23:49:44,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-03 23:49:44,879 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:49:44,879 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:49:44,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-03 23:49:45,095 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 [2021-11-03 23:49:45,095 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 23:49:45,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:49:45,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1516489148, now seen corresponding path program 1 times [2021-11-03 23:49:45,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:49:45,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379645500] [2021-11-03 23:49:45,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:49:45,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:49:45,171 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:49:45,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1629255801] [2021-11-03 23:49:45,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:49:45,172 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:49:45,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:49:45,173 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) [2021-11-03 23:49:45,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-03 23:49:45,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:49:45,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 2953 conjuncts, 108 conjunts are in the unsatisfiable core [2021-11-03 23:49:45,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:49:47,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:49:47,315 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 52 treesize of output 40 [2021-11-03 23:49:47,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:49:47,326 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 37 treesize of output 25 [2021-11-03 23:49:49,618 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 48 treesize of output 36 [2021-11-03 23:49:49,625 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 33 treesize of output 21 [2021-11-03 23:49:49,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2021-11-03 23:49:49,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2021-11-03 23:49:49,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:49:49,917 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:49:49,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:49:49,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379645500] [2021-11-03 23:49:49,917 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:49:49,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629255801] [2021-11-03 23:49:49,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629255801] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:49:49,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:49:49,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-03 23:49:49,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013535590] [2021-11-03 23:49:49,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:49:49,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-03 23:49:49,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:49:49,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-03 23:49:49,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-11-03 23:49:49,918 INFO L87 Difference]: Start difference. First operand 456 states and 539 transitions. Second operand has 17 states, 17 states have (on average 5.647058823529412) internal successors, (96), 17 states have internal predecessors, (96), 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) [2021-11-03 23:49:53,273 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:50:26,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:50:26,167 INFO L93 Difference]: Finished difference Result 1366 states and 1594 transitions. [2021-11-03 23:50:26,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-03 23:50:26,167 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.647058823529412) internal successors, (96), 17 states have internal predecessors, (96), 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 96 [2021-11-03 23:50:26,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:50:26,170 INFO L225 Difference]: With dead ends: 1366 [2021-11-03 23:50:26,170 INFO L226 Difference]: Without dead ends: 1096 [2021-11-03 23:50:26,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 8787.72ms TimeCoverageRelationStatistics Valid=654, Invalid=1998, Unknown=0, NotChecked=0, Total=2652 [2021-11-03 23:50:26,171 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2638 mSDsluCounter, 5418 mSDsCounter, 0 mSdLazyCounter, 8482 mSolverCounterSat, 282 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26565.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2638 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 87.09ms SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 8482 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29333.19ms IncrementalHoareTripleChecker+Time [2021-11-03 23:50:26,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2638 Valid, 0 Invalid, 8765 Unknown, 0 Unchecked, 87.09ms Time], IncrementalHoareTripleChecker [282 Valid, 8482 Invalid, 1 Unknown, 0 Unchecked, 29333.19ms Time] [2021-11-03 23:50:26,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2021-11-03 23:50:26,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 685. [2021-11-03 23:50:26,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 668 states have (on average 1.220059880239521) internal successors, (815), 684 states have internal predecessors, (815), 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) [2021-11-03 23:50:26,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 815 transitions. [2021-11-03 23:50:26,204 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 815 transitions. Word has length 96 [2021-11-03 23:50:26,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:50:26,205 INFO L470 AbstractCegarLoop]: Abstraction has 685 states and 815 transitions. [2021-11-03 23:50:26,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.647058823529412) internal successors, (96), 17 states have internal predecessors, (96), 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) [2021-11-03 23:50:26,205 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 815 transitions. [2021-11-03 23:50:26,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-03 23:50:26,206 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:50:26,206 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:50:26,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-11-03 23:50:26,416 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 [2021-11-03 23:50:26,416 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 23:50:26,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:50:26,417 INFO L85 PathProgramCache]: Analyzing trace with hash -824185084, now seen corresponding path program 1 times [2021-11-03 23:50:26,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:50:26,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552323788] [2021-11-03 23:50:26,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:50:26,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:50:26,472 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:50:26,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [721833928] [2021-11-03 23:50:26,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:50:26,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:50:26,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:50:26,474 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) [2021-11-03 23:50:26,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-03 23:50:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:50:27,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 2953 conjuncts, 92 conjunts are in the unsatisfiable core [2021-11-03 23:50:27,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:50:29,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:50:29,023 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 24 treesize of output 23 [2021-11-03 23:50:30,208 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 22 treesize of output 21 [2021-11-03 23:50:30,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:50:30,506 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:50:30,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:50:30,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552323788] [2021-11-03 23:50:30,507 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:50:30,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721833928] [2021-11-03 23:50:30,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721833928] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:50:30,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:50:30,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-03 23:50:30,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312481990] [2021-11-03 23:50:30,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:50:30,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-03 23:50:30,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:50:30,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-03 23:50:30,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-11-03 23:50:30,508 INFO L87 Difference]: Start difference. First operand 685 states and 815 transitions. Second operand has 15 states, 15 states have (on average 6.4) internal successors, (96), 15 states have internal predecessors, (96), 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) [2021-11-03 23:50:34,055 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.55s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:51:00,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:51:00,320 INFO L93 Difference]: Finished difference Result 1580 states and 1843 transitions. [2021-11-03 23:51:00,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-03 23:51:00,320 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.4) internal successors, (96), 15 states have internal predecessors, (96), 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 96 [2021-11-03 23:51:00,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:51:00,323 INFO L225 Difference]: With dead ends: 1580 [2021-11-03 23:51:00,323 INFO L226 Difference]: Without dead ends: 1306 [2021-11-03 23:51:00,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 80 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 4482.84ms TimeCoverageRelationStatistics Valid=336, Invalid=854, Unknown=0, NotChecked=0, Total=1190 [2021-11-03 23:51:00,324 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2617 mSDsluCounter, 3561 mSDsCounter, 0 mSdLazyCounter, 6207 mSolverCounterSat, 263 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23043.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2617 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 73.78ms SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 6207 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26091.49ms IncrementalHoareTripleChecker+Time [2021-11-03 23:51:00,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2617 Valid, 0 Invalid, 6471 Unknown, 0 Unchecked, 73.78ms Time], IncrementalHoareTripleChecker [263 Valid, 6207 Invalid, 1 Unknown, 0 Unchecked, 26091.49ms Time] [2021-11-03 23:51:00,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306 states. [2021-11-03 23:51:00,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306 to 887. [2021-11-03 23:51:00,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 870 states have (on average 1.210344827586207) internal successors, (1053), 886 states have internal predecessors, (1053), 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) [2021-11-03 23:51:00,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1053 transitions. [2021-11-03 23:51:00,359 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1053 transitions. Word has length 96 [2021-11-03 23:51:00,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:51:00,359 INFO L470 AbstractCegarLoop]: Abstraction has 887 states and 1053 transitions. [2021-11-03 23:51:00,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.4) internal successors, (96), 15 states have internal predecessors, (96), 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) [2021-11-03 23:51:00,360 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1053 transitions. [2021-11-03 23:51:00,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-03 23:51:00,361 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:51:00,361 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:51:00,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-03 23:51:00,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:51:00,575 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 23:51:00,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:51:00,576 INFO L85 PathProgramCache]: Analyzing trace with hash 39260076, now seen corresponding path program 1 times [2021-11-03 23:51:00,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:51:00,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942830379] [2021-11-03 23:51:00,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:51:00,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:51:00,625 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:51:00,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [59868107] [2021-11-03 23:51:00,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:51:00,625 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:51:00,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:51:00,626 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 23:51:00,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-03 23:51:01,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:51:01,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 2965 conjuncts, 145 conjunts are in the unsatisfiable core [2021-11-03 23:51:01,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:51:01,381 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 [2021-11-03 23:51:02,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:51:02,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-11-03 23:51:03,093 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-03 23:51:03,093 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 17 treesize of output 19 [2021-11-03 23:51:03,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:51:03,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:51:03,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:51:03,302 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 39 treesize of output 26 [2021-11-03 23:51:03,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:51:03,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:51:03,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:51:03,657 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 39 treesize of output 26 [2021-11-03 23:51:03,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:51:03,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:51:03,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:51:03,834 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 35 treesize of output 26 [2021-11-03 23:51:04,367 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-03 23:51:04,367 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 23 [2021-11-03 23:51:04,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:51:04,664 INFO L354 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2021-11-03 23:51:04,665 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 37 treesize of output 39 [2021-11-03 23:51:05,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:51:05,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:51:05,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:51:05,627 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 33 treesize of output 35 [2021-11-03 23:51:06,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:51:06,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:51:06,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:51:06,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942830379] [2021-11-03 23:51:06,903 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:51:06,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59868107] [2021-11-03 23:51:06,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59868107] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:51:06,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:51:06,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-03 23:51:06,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152694798] [2021-11-03 23:51:06,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:51:06,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-03 23:51:06,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:51:06,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-03 23:51:06,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2021-11-03 23:51:06,905 INFO L87 Difference]: Start difference. First operand 887 states and 1053 transitions. Second operand has 21 states, 21 states have (on average 4.619047619047619) internal successors, (97), 21 states have internal predecessors, (97), 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) [2021-11-03 23:51:08,947 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 [] [2021-11-03 23:51:28,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:51:28,346 INFO L93 Difference]: Finished difference Result 2275 states and 2696 transitions. [2021-11-03 23:51:28,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-03 23:51:28,346 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.619047619047619) internal successors, (97), 21 states have internal predecessors, (97), 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 97 [2021-11-03 23:51:28,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:51:28,350 INFO L225 Difference]: With dead ends: 2275 [2021-11-03 23:51:28,350 INFO L226 Difference]: Without dead ends: 1672 [2021-11-03 23:51:28,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 2841.55ms TimeCoverageRelationStatistics Valid=106, Invalid=596, Unknown=0, NotChecked=0, Total=702 [2021-11-03 23:51:28,351 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1226 mSDsluCounter, 5010 mSDsCounter, 0 mSdLazyCounter, 5353 mSolverCounterSat, 111 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17931.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1226 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 51.20ms SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 5353 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 2262 IncrementalHoareTripleChecker+Unchecked, 20664.47ms IncrementalHoareTripleChecker+Time [2021-11-03 23:51:28,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1226 Valid, 0 Invalid, 7727 Unknown, 0 Unchecked, 51.20ms Time], IncrementalHoareTripleChecker [111 Valid, 5353 Invalid, 1 Unknown, 2262 Unchecked, 20664.47ms Time] [2021-11-03 23:51:28,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1672 states. [2021-11-03 23:51:28,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1672 to 1514. [2021-11-03 23:51:28,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1514 states, 1497 states have (on average 1.2084168336673347) internal successors, (1809), 1513 states have internal predecessors, (1809), 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) [2021-11-03 23:51:28,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 1809 transitions. [2021-11-03 23:51:28,427 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 1809 transitions. Word has length 97 [2021-11-03 23:51:28,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:51:28,428 INFO L470 AbstractCegarLoop]: Abstraction has 1514 states and 1809 transitions. [2021-11-03 23:51:28,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.619047619047619) internal successors, (97), 21 states have internal predecessors, (97), 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) [2021-11-03 23:51:28,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 1809 transitions. [2021-11-03 23:51:28,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-03 23:51:28,429 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:51:28,429 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:51:28,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-03 23:51:28,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:51:28,642 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-03 23:51:28,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:51:28,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1839870870, now seen corresponding path program 1 times [2021-11-03 23:51:28,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:51:28,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744871936] [2021-11-03 23:51:28,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:51:28,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:51:28,701 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:51:28,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [196907334] [2021-11-03 23:51:28,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:51:28,701 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:51:28,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:51:28,703 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 23:51:28,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process Killed by 15