./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_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 723ac1839b12f7ec2d51e01d6b07ab9cd6a1336eb9a801e97d56c2782f32ef5c --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:08:38,444 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:08:38,446 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:08:38,479 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:08:38,480 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:08:38,482 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:08:38,483 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:08:38,485 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:08:38,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:08:38,490 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:08:38,490 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:08:38,491 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:08:38,492 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:08:38,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:08:38,495 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:08:38,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:08:38,500 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:08:38,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:08:38,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:08:38,506 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:08:38,507 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:08:38,508 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:08:38,509 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:08:38,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:08:38,514 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:08:38,514 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:08:38,515 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:08:38,516 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:08:38,516 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:08:38,517 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:08:38,517 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:08:38,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:08:38,518 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:08:38,519 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:08:38,520 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:08:38,520 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:08:38,521 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:08:38,521 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:08:38,521 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:08:38,521 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:08:38,522 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:08:38,523 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:08:38,547 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:08:38,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:08:38,548 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:08:38,548 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:08:38,548 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:08:38,549 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:08:38,549 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:08:38,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:08:38,549 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:08:38,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:08:38,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:08:38,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:08:38,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:08:38,551 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:08:38,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:08:38,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:08:38,551 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:08:38,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:08:38,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:08:38,551 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:08:38,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:08:38,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:08:38,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:08:38,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:08:38,552 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:08:38,552 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:08:38,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:08:38,553 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:08:38,553 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:08:38,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:08:38,553 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:08:38,553 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 723ac1839b12f7ec2d51e01d6b07ab9cd6a1336eb9a801e97d56c2782f32ef5c [2021-12-14 17:08:38,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:08:38,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:08:38,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:08:38,733 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:08:38,734 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:08:38,735 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i [2021-12-14 17:08:38,776 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fb986048/13de37f0986c45039df9c0c9ed8b3362/FLAG701ebf77e [2021-12-14 17:08:39,384 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:08:39,385 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i [2021-12-14 17:08:39,411 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fb986048/13de37f0986c45039df9c0c9ed8b3362/FLAG701ebf77e [2021-12-14 17:08:39,805 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fb986048/13de37f0986c45039df9c0c9ed8b3362 [2021-12-14 17:08:39,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:08:39,808 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:08:39,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:08:39,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:08:39,814 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:08:39,815 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:08:39" (1/1) ... [2021-12-14 17:08:39,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4211b42d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:39, skipping insertion in model container [2021-12-14 17:08:39,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:08:39" (1/1) ... [2021-12-14 17:08:39,820 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:08:39,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:08:40,079 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i[4502,4515] [2021-12-14 17:08:40,086 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i[4562,4575] [2021-12-14 17:08:40,586 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:40,587 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:40,588 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:40,588 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:40,590 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:40,601 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:40,604 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:40,605 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:40,615 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:40,616 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:40,617 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:40,617 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:40,618 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:40,798 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-14 17:08:40,799 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-14 17:08:40,799 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-14 17:08:40,800 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-14 17:08:40,801 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-14 17:08:40,801 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-14 17:08:40,802 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-14 17:08:40,802 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-14 17:08:40,802 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-14 17:08:40,803 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-14 17:08:40,873 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-14 17:08:40,886 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:40,886 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:40,889 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:40,892 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:40,947 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:40,948 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:40,948 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:40,948 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:40,950 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:40,950 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:40,950 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:40,951 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:40,951 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:40,951 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:40,952 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:40,952 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:40,953 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:40,955 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:40,956 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:40,956 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:40,956 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:40,959 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:40,960 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:40,970 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:40,971 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:40,971 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:40,983 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:08:41,010 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:08:41,062 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i[4502,4515] [2021-12-14 17:08:41,062 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i[4562,4575] [2021-12-14 17:08:41,081 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:41,081 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:41,081 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:41,082 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:41,082 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:41,085 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:41,086 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:41,086 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:41,087 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:41,087 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:41,087 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:41,088 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:41,088 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:41,115 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-14 17:08:41,115 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-14 17:08:41,115 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-14 17:08:41,116 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-14 17:08:41,116 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-14 17:08:41,117 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-14 17:08:41,117 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-14 17:08:41,117 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-14 17:08:41,117 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-14 17:08:41,130 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-14 17:08:41,141 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-14 17:08:41,149 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:41,149 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:41,150 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:41,152 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:41,163 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:41,163 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:41,164 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:41,164 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:41,164 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:41,164 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:41,165 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:41,165 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:41,165 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:41,165 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:41,165 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:41,166 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:41,166 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:41,166 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:41,167 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:41,167 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:41,167 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:41,168 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:41,168 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:41,171 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:41,172 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:41,172 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:08:41,175 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:08:41,289 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:08:41,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:41 WrapperNode [2021-12-14 17:08:41,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:08:41,290 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:08:41,290 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:08:41,290 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:08:41,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:41" (1/1) ... [2021-12-14 17:08:41,347 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:41" (1/1) ... [2021-12-14 17:08:41,427 INFO L137 Inliner]: procedures = 697, calls = 1887, calls flagged for inlining = 61, calls inlined = 14, statements flattened = 815 [2021-12-14 17:08:41,428 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:08:41,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:08:41,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:08:41,430 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:08:41,436 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:41" (1/1) ... [2021-12-14 17:08:41,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:41" (1/1) ... [2021-12-14 17:08:41,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:41" (1/1) ... [2021-12-14 17:08:41,458 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:41" (1/1) ... [2021-12-14 17:08:41,484 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:41" (1/1) ... [2021-12-14 17:08:41,489 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:41" (1/1) ... [2021-12-14 17:08:41,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:41" (1/1) ... [2021-12-14 17:08:41,503 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:08:41,504 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:08:41,504 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:08:41,504 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:08:41,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:41" (1/1) ... [2021-12-14 17:08:41,510 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:08:41,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:08:41,527 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 17:08:41,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 17:08:41,565 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2021-12-14 17:08:41,565 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2021-12-14 17:08:41,565 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-12-14 17:08:41,565 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-12-14 17:08:41,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:08:41,565 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-12-14 17:08:41,566 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-12-14 17:08:41,566 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-12-14 17:08:41,566 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-12-14 17:08:41,566 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-14 17:08:41,566 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-14 17:08:41,566 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2021-12-14 17:08:41,566 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2021-12-14 17:08:41,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:08:41,567 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-14 17:08:41,567 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-14 17:08:41,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-14 17:08:41,569 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-14 17:08:41,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:08:41,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:08:41,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:08:41,570 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2021-12-14 17:08:41,570 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2021-12-14 17:08:41,571 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-12-14 17:08:41,571 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-12-14 17:08:41,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:08:41,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:08:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-14 17:08:41,575 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-14 17:08:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-14 17:08:41,576 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-14 17:08:41,576 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-12-14 17:08:41,576 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-12-14 17:08:41,576 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-12-14 17:08:41,576 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-12-14 17:08:41,576 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-12-14 17:08:41,576 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-12-14 17:08:41,576 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 17:08:41,576 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 17:08:41,577 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-12-14 17:08:41,577 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-12-14 17:08:41,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:08:41,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:08:41,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:08:41,577 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2021-12-14 17:08:41,577 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2021-12-14 17:08:41,577 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-14 17:08:41,577 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-14 17:08:41,577 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-14 17:08:41,578 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-14 17:08:41,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:08:41,578 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-12-14 17:08:41,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-12-14 17:08:41,578 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2021-12-14 17:08:41,578 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2021-12-14 17:08:41,578 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-14 17:08:41,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-14 17:08:41,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:08:41,911 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:08:41,913 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:08:42,580 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:08:42,590 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:08:42,593 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-14 17:08:42,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:08:42 BoogieIcfgContainer [2021-12-14 17:08:42,596 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:08:42,598 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:08:42,598 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:08:42,600 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:08:42,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:08:39" (1/3) ... [2021-12-14 17:08:42,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c253303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:08:42, skipping insertion in model container [2021-12-14 17:08:42,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:08:41" (2/3) ... [2021-12-14 17:08:42,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c253303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:08:42, skipping insertion in model container [2021-12-14 17:08:42,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:08:42" (3/3) ... [2021-12-14 17:08:42,603 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_up_harness.i [2021-12-14 17:08:42,612 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:08:42,612 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-14 17:08:42,657 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:08:42,668 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 17:08:42,668 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-14 17:08:42,689 INFO L276 IsEmpty]: Start isEmpty. Operand has 315 states, 194 states have (on average 1.2577319587628866) internal successors, (244), 197 states have internal predecessors, (244), 95 states have call successors, (95), 23 states have call predecessors, (95), 23 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2021-12-14 17:08:42,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-14 17:08:42,702 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:08:42,703 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:08:42,704 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:08:42,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:08:42,708 INFO L85 PathProgramCache]: Analyzing trace with hash -30055658, now seen corresponding path program 1 times [2021-12-14 17:08:42,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:08:42,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252602074] [2021-12-14 17:08:42,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:08:42,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:08:43,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:43,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:08:43,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:43,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:08:43,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:43,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-14 17:08:43,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:43,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 17:08:43,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:43,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:08:43,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:43,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-14 17:08:43,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:43,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 17:08:43,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:43,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:08:43,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:43,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-14 17:08:43,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:43,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-14 17:08:43,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:43,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 17:08:43,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:43,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 17:08:43,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:43,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-14 17:08:43,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:43,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-14 17:08:43,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:43,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-14 17:08:43,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:43,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 17:08:43,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:43,369 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-12-14 17:08:43,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:08:43,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252602074] [2021-12-14 17:08:43,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252602074] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:08:43,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:08:43,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:08:43,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959201050] [2021-12-14 17:08:43,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:08:43,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:08:43,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:08:43,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:08:43,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:08:43,402 INFO L87 Difference]: Start difference. First operand has 315 states, 194 states have (on average 1.2577319587628866) internal successors, (244), 197 states have internal predecessors, (244), 95 states have call successors, (95), 23 states have call predecessors, (95), 23 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 17:08:44,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:08:44,116 INFO L93 Difference]: Finished difference Result 711 states and 1124 transitions. [2021-12-14 17:08:44,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 17:08:44,118 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 104 [2021-12-14 17:08:44,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:08:44,132 INFO L225 Difference]: With dead ends: 711 [2021-12-14 17:08:44,133 INFO L226 Difference]: Without dead ends: 402 [2021-12-14 17:08:44,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:08:44,141 INFO L933 BasicCegarLoop]: 386 mSDtfsCounter, 237 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-14 17:08:44,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 510 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-14 17:08:44,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2021-12-14 17:08:44,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 308. [2021-12-14 17:08:44,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 189 states have (on average 1.2222222222222223) internal successors, (231), 191 states have internal predecessors, (231), 95 states have call successors, (95), 23 states have call predecessors, (95), 22 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2021-12-14 17:08:44,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 419 transitions. [2021-12-14 17:08:44,196 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 419 transitions. Word has length 104 [2021-12-14 17:08:44,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:08:44,196 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 419 transitions. [2021-12-14 17:08:44,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-14 17:08:44,197 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 419 transitions. [2021-12-14 17:08:44,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-14 17:08:44,199 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:08:44,200 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:08:44,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 17:08:44,200 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:08:44,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:08:44,201 INFO L85 PathProgramCache]: Analyzing trace with hash -380024514, now seen corresponding path program 1 times [2021-12-14 17:08:44,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:08:44,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2355763] [2021-12-14 17:08:44,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:08:44,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:08:44,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:44,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:08:44,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:44,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:08:44,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:44,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-14 17:08:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:44,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 17:08:44,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:44,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:08:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:44,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-14 17:08:44,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:44,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 17:08:44,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:44,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:08:44,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:44,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-14 17:08:44,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:44,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-14 17:08:44,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:44,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 17:08:44,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:44,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 17:08:44,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:44,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-14 17:08:44,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:44,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-14 17:08:44,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:44,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-14 17:08:44,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:44,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 17:08:44,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:44,509 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-12-14 17:08:44,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:08:44,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2355763] [2021-12-14 17:08:44,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2355763] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:08:44,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743236486] [2021-12-14 17:08:44,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:08:44,511 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:08:44,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:08:44,512 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:08:44,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 17:08:44,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:44,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 2188 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-14 17:08:44,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:08:45,238 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-14 17:08:45,238 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:08:45,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743236486] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:08:45,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:08:45,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2021-12-14 17:08:45,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81222866] [2021-12-14 17:08:45,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:08:45,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:08:45,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:08:45,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:08:45,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-14 17:08:45,241 INFO L87 Difference]: Start difference. First operand 308 states and 419 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-14 17:08:45,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:08:45,394 INFO L93 Difference]: Finished difference Result 582 states and 798 transitions. [2021-12-14 17:08:45,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 17:08:45,395 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 104 [2021-12-14 17:08:45,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:08:45,397 INFO L225 Difference]: With dead ends: 582 [2021-12-14 17:08:45,397 INFO L226 Difference]: Without dead ends: 310 [2021-12-14 17:08:45,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-12-14 17:08:45,399 INFO L933 BasicCegarLoop]: 383 mSDtfsCounter, 442 mSDsluCounter, 1093 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:08:45,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 1476 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 17:08:45,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2021-12-14 17:08:45,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 310. [2021-12-14 17:08:45,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 190 states have (on average 1.2210526315789474) internal successors, (232), 193 states have internal predecessors, (232), 95 states have call successors, (95), 23 states have call predecessors, (95), 23 states have return successors, (97), 93 states have call predecessors, (97), 93 states have call successors, (97) [2021-12-14 17:08:45,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 424 transitions. [2021-12-14 17:08:45,418 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 424 transitions. Word has length 104 [2021-12-14 17:08:45,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:08:45,419 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 424 transitions. [2021-12-14 17:08:45,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-14 17:08:45,419 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 424 transitions. [2021-12-14 17:08:45,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-14 17:08:45,421 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:08:45,421 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:08:45,461 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-14 17:08:45,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:08:45,663 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:08:45,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:08:45,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1602100200, now seen corresponding path program 1 times [2021-12-14 17:08:45,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:08:45,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103698980] [2021-12-14 17:08:45,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:08:45,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:08:45,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:45,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:08:45,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:45,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:08:45,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:45,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-14 17:08:45,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:45,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 17:08:45,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:45,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:08:45,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:45,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-14 17:08:45,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:45,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 17:08:45,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:45,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:08:45,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:45,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-14 17:08:45,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:45,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-14 17:08:45,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:45,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:08:45,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:45,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-14 17:08:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:45,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-14 17:08:45,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:45,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 17:08:45,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:45,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 17:08:45,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:45,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 17:08:45,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:45,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-14 17:08:45,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:45,946 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-12-14 17:08:45,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:08:45,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103698980] [2021-12-14 17:08:45,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103698980] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:08:45,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100856384] [2021-12-14 17:08:45,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:08:45,947 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:08:45,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:08:45,964 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:08:45,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-14 17:08:46,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:46,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 2238 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-14 17:08:46,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:08:46,532 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-14 17:08:46,532 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:08:46,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100856384] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:08:46,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:08:46,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2021-12-14 17:08:46,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409869298] [2021-12-14 17:08:46,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:08:46,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 17:08:46,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:08:46,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 17:08:46,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-14 17:08:46,535 INFO L87 Difference]: Start difference. First operand 310 states and 424 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 4 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-14 17:08:46,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:08:46,786 INFO L93 Difference]: Finished difference Result 605 states and 845 transitions. [2021-12-14 17:08:46,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 17:08:46,787 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 4 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 112 [2021-12-14 17:08:46,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:08:46,789 INFO L225 Difference]: With dead ends: 605 [2021-12-14 17:08:46,789 INFO L226 Difference]: Without dead ends: 331 [2021-12-14 17:08:46,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2021-12-14 17:08:46,791 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 506 mSDsluCounter, 1756 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 2124 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:08:46,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [530 Valid, 2124 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 17:08:46,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2021-12-14 17:08:46,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 329. [2021-12-14 17:08:46,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 206 states have (on average 1.233009708737864) internal successors, (254), 209 states have internal predecessors, (254), 97 states have call successors, (97), 23 states have call predecessors, (97), 24 states have return successors, (110), 96 states have call predecessors, (110), 95 states have call successors, (110) [2021-12-14 17:08:46,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 461 transitions. [2021-12-14 17:08:46,807 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 461 transitions. Word has length 112 [2021-12-14 17:08:46,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:08:46,807 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 461 transitions. [2021-12-14 17:08:46,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 4 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-14 17:08:46,808 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 461 transitions. [2021-12-14 17:08:46,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-14 17:08:46,809 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:08:46,809 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:08:46,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-14 17:08:47,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-14 17:08:47,029 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:08:47,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:08:47,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1616611866, now seen corresponding path program 1 times [2021-12-14 17:08:47,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:08:47,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430773692] [2021-12-14 17:08:47,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:08:47,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:08:47,067 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 17:08:47,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [217204293] [2021-12-14 17:08:47,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:08:47,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:08:47,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:08:47,069 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:08:47,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-14 17:08:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:47,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 2379 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-14 17:08:47,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:08:47,649 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-14 17:08:47,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:08:47,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:08:47,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430773692] [2021-12-14 17:08:47,650 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 17:08:47,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217204293] [2021-12-14 17:08:47,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217204293] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:08:47,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:08:47,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 17:08:47,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272223807] [2021-12-14 17:08:47,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:08:47,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 17:08:47,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:08:47,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 17:08:47,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:08:47,652 INFO L87 Difference]: Start difference. First operand 329 states and 461 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-14 17:08:47,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:08:47,841 INFO L93 Difference]: Finished difference Result 630 states and 894 transitions. [2021-12-14 17:08:47,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 17:08:47,841 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 127 [2021-12-14 17:08:47,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:08:47,843 INFO L225 Difference]: With dead ends: 630 [2021-12-14 17:08:47,844 INFO L226 Difference]: Without dead ends: 337 [2021-12-14 17:08:47,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-12-14 17:08:47,845 INFO L933 BasicCegarLoop]: 377 mSDtfsCounter, 466 mSDsluCounter, 1436 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:08:47,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [474 Valid, 1813 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 17:08:47,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-12-14 17:08:47,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 329. [2021-12-14 17:08:47,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 206 states have (on average 1.233009708737864) internal successors, (254), 209 states have internal predecessors, (254), 97 states have call successors, (97), 23 states have call predecessors, (97), 24 states have return successors, (110), 96 states have call predecessors, (110), 95 states have call successors, (110) [2021-12-14 17:08:47,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 461 transitions. [2021-12-14 17:08:47,859 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 461 transitions. Word has length 127 [2021-12-14 17:08:47,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:08:47,859 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 461 transitions. [2021-12-14 17:08:47,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-14 17:08:47,860 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 461 transitions. [2021-12-14 17:08:47,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-14 17:08:47,861 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:08:47,861 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:08:47,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-14 17:08:48,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:08:48,081 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:08:48,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:08:48,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1521582877, now seen corresponding path program 1 times [2021-12-14 17:08:48,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:08:48,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346317468] [2021-12-14 17:08:48,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:08:48,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:08:48,128 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 17:08:48,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [409566656] [2021-12-14 17:08:48,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:08:48,129 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:08:48,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:08:48,130 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:08:48,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-14 17:08:48,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:48,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 2451 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-14 17:08:48,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:08:48,781 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-12-14 17:08:48,782 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:08:48,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:08:48,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346317468] [2021-12-14 17:08:48,782 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 17:08:48,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409566656] [2021-12-14 17:08:48,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409566656] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:08:48,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:08:48,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 17:08:48,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740323353] [2021-12-14 17:08:48,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:08:48,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 17:08:48,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:08:48,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 17:08:48,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 17:08:48,784 INFO L87 Difference]: Start difference. First operand 329 states and 461 transitions. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 5 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2021-12-14 17:08:49,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:08:49,223 INFO L93 Difference]: Finished difference Result 640 states and 907 transitions. [2021-12-14 17:08:49,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 17:08:49,224 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 5 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) Word has length 143 [2021-12-14 17:08:49,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:08:49,226 INFO L225 Difference]: With dead ends: 640 [2021-12-14 17:08:49,226 INFO L226 Difference]: Without dead ends: 347 [2021-12-14 17:08:49,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-12-14 17:08:49,229 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 537 mSDsluCounter, 2072 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 2434 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 17:08:49,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [561 Valid, 2434 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 17:08:49,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-12-14 17:08:49,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 329. [2021-12-14 17:08:49,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 206 states have (on average 1.233009708737864) internal successors, (254), 209 states have internal predecessors, (254), 97 states have call successors, (97), 23 states have call predecessors, (97), 24 states have return successors, (110), 96 states have call predecessors, (110), 95 states have call successors, (110) [2021-12-14 17:08:49,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 461 transitions. [2021-12-14 17:08:49,243 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 461 transitions. Word has length 143 [2021-12-14 17:08:49,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:08:49,243 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 461 transitions. [2021-12-14 17:08:49,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 5 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2021-12-14 17:08:49,244 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 461 transitions. [2021-12-14 17:08:49,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-12-14 17:08:49,245 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:08:49,245 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:08:49,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-14 17:08:49,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:08:49,462 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:08:49,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:08:49,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1907107023, now seen corresponding path program 1 times [2021-12-14 17:08:49,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:08:49,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544995692] [2021-12-14 17:08:49,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:08:49,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:08:49,574 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 17:08:49,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [160198669] [2021-12-14 17:08:49,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:08:49,575 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:08:49,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:08:49,576 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:08:49,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-14 17:08:49,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:49,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 2592 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-14 17:08:49,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:08:50,232 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-12-14 17:08:50,232 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:08:50,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:08:50,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544995692] [2021-12-14 17:08:50,233 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 17:08:50,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160198669] [2021-12-14 17:08:50,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160198669] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:08:50,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:08:50,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 17:08:50,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048079182] [2021-12-14 17:08:50,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:08:50,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 17:08:50,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:08:50,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 17:08:50,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:08:50,235 INFO L87 Difference]: Start difference. First operand 329 states and 461 transitions. Second operand has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-14 17:08:50,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:08:50,456 INFO L93 Difference]: Finished difference Result 595 states and 843 transitions. [2021-12-14 17:08:50,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 17:08:50,457 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 158 [2021-12-14 17:08:50,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:08:50,461 INFO L225 Difference]: With dead ends: 595 [2021-12-14 17:08:50,462 INFO L226 Difference]: Without dead ends: 331 [2021-12-14 17:08:50,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-12-14 17:08:50,465 INFO L933 BasicCegarLoop]: 373 mSDtfsCounter, 487 mSDsluCounter, 1756 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 2129 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:08:50,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 2129 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 17:08:50,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2021-12-14 17:08:50,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2021-12-14 17:08:50,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 207 states have (on average 1.2318840579710144) internal successors, (255), 211 states have internal predecessors, (255), 97 states have call successors, (97), 23 states have call predecessors, (97), 25 states have return successors, (112), 96 states have call predecessors, (112), 95 states have call successors, (112) [2021-12-14 17:08:50,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 464 transitions. [2021-12-14 17:08:50,485 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 464 transitions. Word has length 158 [2021-12-14 17:08:50,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:08:50,487 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 464 transitions. [2021-12-14 17:08:50,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-14 17:08:50,488 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 464 transitions. [2021-12-14 17:08:50,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-12-14 17:08:50,491 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:08:50,491 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:08:50,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-14 17:08:50,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:08:50,699 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:08:50,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:08:50,699 INFO L85 PathProgramCache]: Analyzing trace with hash -2069947675, now seen corresponding path program 1 times [2021-12-14 17:08:50,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:08:50,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136236684] [2021-12-14 17:08:50,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:08:50,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:08:50,782 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 17:08:50,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [681716063] [2021-12-14 17:08:50,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:08:50,783 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:08:50,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:08:50,784 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:08:50,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-14 17:08:51,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:51,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 2692 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-14 17:08:51,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:08:51,558 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-12-14 17:08:51,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:08:51,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:08:51,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136236684] [2021-12-14 17:08:51,558 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 17:08:51,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681716063] [2021-12-14 17:08:51,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681716063] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:08:51,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:08:51,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-14 17:08:51,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896533276] [2021-12-14 17:08:51,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:08:51,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-14 17:08:51,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:08:51,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-14 17:08:51,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-14 17:08:51,560 INFO L87 Difference]: Start difference. First operand 331 states and 464 transitions. Second operand has 10 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 5 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2021-12-14 17:08:51,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:08:51,881 INFO L93 Difference]: Finished difference Result 613 states and 869 transitions. [2021-12-14 17:08:51,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 17:08:51,881 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 5 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) Word has length 174 [2021-12-14 17:08:51,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:08:51,884 INFO L225 Difference]: With dead ends: 613 [2021-12-14 17:08:51,884 INFO L226 Difference]: Without dead ends: 347 [2021-12-14 17:08:51,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-12-14 17:08:51,886 INFO L933 BasicCegarLoop]: 375 mSDtfsCounter, 519 mSDsluCounter, 2456 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 2831 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:08:51,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [539 Valid, 2831 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 17:08:51,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-12-14 17:08:51,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 345. [2021-12-14 17:08:51,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 220 states have (on average 1.240909090909091) internal successors, (273), 223 states have internal predecessors, (273), 98 states have call successors, (98), 23 states have call predecessors, (98), 25 states have return successors, (113), 98 states have call predecessors, (113), 96 states have call successors, (113) [2021-12-14 17:08:51,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 484 transitions. [2021-12-14 17:08:51,898 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 484 transitions. Word has length 174 [2021-12-14 17:08:51,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:08:51,899 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 484 transitions. [2021-12-14 17:08:51,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 5 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2021-12-14 17:08:51,899 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 484 transitions. [2021-12-14 17:08:51,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-12-14 17:08:51,901 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:08:51,901 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:08:51,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-14 17:08:52,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:08:52,136 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:08:52,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:08:52,136 INFO L85 PathProgramCache]: Analyzing trace with hash -586575313, now seen corresponding path program 1 times [2021-12-14 17:08:52,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:08:52,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547262965] [2021-12-14 17:08:52,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:08:52,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:08:52,202 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 17:08:52,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1376552306] [2021-12-14 17:08:52,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:08:52,202 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:08:52,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:08:52,206 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:08:52,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-14 17:08:52,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:52,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 2974 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-14 17:08:52,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:08:52,954 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-12-14 17:08:52,954 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:08:52,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:08:52,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547262965] [2021-12-14 17:08:52,956 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 17:08:52,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376552306] [2021-12-14 17:08:52,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376552306] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:08:52,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:08:52,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 17:08:52,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780833119] [2021-12-14 17:08:52,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:08:52,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 17:08:52,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:08:52,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 17:08:52,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 17:08:52,958 INFO L87 Difference]: Start difference. First operand 345 states and 484 transitions. Second operand has 9 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 5 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2021-12-14 17:08:53,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:08:53,202 INFO L93 Difference]: Finished difference Result 633 states and 897 transitions. [2021-12-14 17:08:53,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 17:08:53,202 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 5 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) Word has length 204 [2021-12-14 17:08:53,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:08:53,204 INFO L225 Difference]: With dead ends: 633 [2021-12-14 17:08:53,204 INFO L226 Difference]: Without dead ends: 353 [2021-12-14 17:08:53,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-12-14 17:08:53,206 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 511 mSDsluCounter, 2077 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 2444 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:08:53,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [515 Valid, 2444 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 17:08:53,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2021-12-14 17:08:53,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 345. [2021-12-14 17:08:53,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 220 states have (on average 1.240909090909091) internal successors, (273), 223 states have internal predecessors, (273), 98 states have call successors, (98), 23 states have call predecessors, (98), 25 states have return successors, (113), 98 states have call predecessors, (113), 96 states have call successors, (113) [2021-12-14 17:08:53,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 484 transitions. [2021-12-14 17:08:53,218 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 484 transitions. Word has length 204 [2021-12-14 17:08:53,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:08:53,219 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 484 transitions. [2021-12-14 17:08:53,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 5 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2021-12-14 17:08:53,220 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 484 transitions. [2021-12-14 17:08:53,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2021-12-14 17:08:53,221 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:08:53,221 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:08:53,257 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-14 17:08:53,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:08:53,442 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:08:53,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:08:53,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1182025265, now seen corresponding path program 1 times [2021-12-14 17:08:53,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:08:53,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68663517] [2021-12-14 17:08:53,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:08:53,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:08:53,503 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 17:08:53,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [704955971] [2021-12-14 17:08:53,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:08:53,504 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:08:53,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:08:53,505 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:08:53,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-14 17:08:53,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:53,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 3118 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-14 17:08:53,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:08:54,300 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-12-14 17:08:54,301 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:08:54,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:08:54,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68663517] [2021-12-14 17:08:54,301 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 17:08:54,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704955971] [2021-12-14 17:08:54,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704955971] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:08:54,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:08:54,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-14 17:08:54,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096890382] [2021-12-14 17:08:54,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:08:54,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-14 17:08:54,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:08:54,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-14 17:08:54,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-14 17:08:54,303 INFO L87 Difference]: Start difference. First operand 345 states and 484 transitions. Second operand has 11 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 6 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (24), 5 states have call predecessors, (24), 6 states have call successors, (24) [2021-12-14 17:08:54,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:08:54,855 INFO L93 Difference]: Finished difference Result 627 states and 887 transitions. [2021-12-14 17:08:54,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 17:08:54,855 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 6 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (24), 5 states have call predecessors, (24), 6 states have call successors, (24) Word has length 236 [2021-12-14 17:08:54,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:08:54,857 INFO L225 Difference]: With dead ends: 627 [2021-12-14 17:08:54,857 INFO L226 Difference]: Without dead ends: 347 [2021-12-14 17:08:54,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2021-12-14 17:08:54,859 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 582 mSDsluCounter, 2663 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 3015 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-14 17:08:54,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [602 Valid, 3015 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-14 17:08:54,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-12-14 17:08:54,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 329. [2021-12-14 17:08:54,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 206 states have (on average 1.233009708737864) internal successors, (254), 209 states have internal predecessors, (254), 97 states have call successors, (97), 23 states have call predecessors, (97), 24 states have return successors, (108), 96 states have call predecessors, (108), 95 states have call successors, (108) [2021-12-14 17:08:54,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 459 transitions. [2021-12-14 17:08:54,882 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 459 transitions. Word has length 236 [2021-12-14 17:08:54,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:08:54,882 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 459 transitions. [2021-12-14 17:08:54,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 6 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (24), 5 states have call predecessors, (24), 6 states have call successors, (24) [2021-12-14 17:08:54,882 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 459 transitions. [2021-12-14 17:08:54,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2021-12-14 17:08:54,884 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:08:54,884 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:08:54,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-14 17:08:55,099 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,SelfDestructingSolverStorable8 [2021-12-14 17:08:55,099 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:08:55,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:08:55,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1259871209, now seen corresponding path program 1 times [2021-12-14 17:08:55,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:08:55,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885181921] [2021-12-14 17:08:55,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:08:55,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:08:55,158 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 17:08:55,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [673768900] [2021-12-14 17:08:55,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:08:55,159 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:08:55,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:08:55,167 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:08:55,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-14 17:08:55,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:55,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 3400 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-14 17:08:55,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:08:56,070 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-12-14 17:08:56,070 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:08:56,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:08:56,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885181921] [2021-12-14 17:08:56,070 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 17:08:56,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673768900] [2021-12-14 17:08:56,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673768900] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:08:56,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:08:56,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 17:08:56,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466660540] [2021-12-14 17:08:56,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:08:56,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:08:56,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:08:56,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:08:56,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:08:56,074 INFO L87 Difference]: Start difference. First operand 329 states and 459 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-14 17:08:56,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:08:56,308 INFO L93 Difference]: Finished difference Result 658 states and 935 transitions. [2021-12-14 17:08:56,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 17:08:56,309 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 266 [2021-12-14 17:08:56,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:08:56,313 INFO L225 Difference]: With dead ends: 658 [2021-12-14 17:08:56,313 INFO L226 Difference]: Without dead ends: 365 [2021-12-14 17:08:56,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-14 17:08:56,315 INFO L933 BasicCegarLoop]: 418 mSDtfsCounter, 21 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1944 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:08:56,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 1944 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 17:08:56,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2021-12-14 17:08:56,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 337. [2021-12-14 17:08:56,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 214 states have (on average 1.233644859813084) internal successors, (264), 217 states have internal predecessors, (264), 97 states have call successors, (97), 23 states have call predecessors, (97), 24 states have return successors, (108), 96 states have call predecessors, (108), 95 states have call successors, (108) [2021-12-14 17:08:56,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 469 transitions. [2021-12-14 17:08:56,329 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 469 transitions. Word has length 266 [2021-12-14 17:08:56,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:08:56,329 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 469 transitions. [2021-12-14 17:08:56,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-14 17:08:56,330 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 469 transitions. [2021-12-14 17:08:56,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2021-12-14 17:08:56,332 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:08:56,332 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:08:56,356 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-14 17:08:56,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-14 17:08:56,551 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:08:56,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:08:56,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1029084259, now seen corresponding path program 1 times [2021-12-14 17:08:56,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:08:56,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278722673] [2021-12-14 17:08:56,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:08:56,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:08:56,604 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 17:08:56,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [193588495] [2021-12-14 17:08:56,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:08:56,605 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:08:56,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:08:56,606 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:08:56,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-14 17:08:57,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:57,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 3391 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-14 17:08:57,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:08:57,491 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2021-12-14 17:08:57,492 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:08:57,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:08:57,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278722673] [2021-12-14 17:08:57,492 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 17:08:57,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193588495] [2021-12-14 17:08:57,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193588495] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:08:57,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:08:57,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:08:57,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545371177] [2021-12-14 17:08:57,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:08:57,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:08:57,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:08:57,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:08:57,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:08:57,494 INFO L87 Difference]: Start difference. First operand 337 states and 469 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-14 17:08:57,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:08:57,519 INFO L93 Difference]: Finished difference Result 646 states and 911 transitions. [2021-12-14 17:08:57,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:08:57,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 266 [2021-12-14 17:08:57,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:08:57,521 INFO L225 Difference]: With dead ends: 646 [2021-12-14 17:08:57,521 INFO L226 Difference]: Without dead ends: 345 [2021-12-14 17:08:57,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:08:57,523 INFO L933 BasicCegarLoop]: 416 mSDtfsCounter, 3 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:08:57,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 1243 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:08:57,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-12-14 17:08:57,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 341. [2021-12-14 17:08:57,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 218 states have (on average 1.2293577981651376) internal successors, (268), 221 states have internal predecessors, (268), 97 states have call successors, (97), 23 states have call predecessors, (97), 24 states have return successors, (108), 96 states have call predecessors, (108), 95 states have call successors, (108) [2021-12-14 17:08:57,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 473 transitions. [2021-12-14 17:08:57,534 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 473 transitions. Word has length 266 [2021-12-14 17:08:57,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:08:57,534 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 473 transitions. [2021-12-14 17:08:57,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-14 17:08:57,535 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 473 transitions. [2021-12-14 17:08:57,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2021-12-14 17:08:57,536 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:08:57,536 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:08:57,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-14 17:08:57,751 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,SelfDestructingSolverStorable10 [2021-12-14 17:08:57,751 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:08:57,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:08:57,752 INFO L85 PathProgramCache]: Analyzing trace with hash -2079122269, now seen corresponding path program 1 times [2021-12-14 17:08:57,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:08:57,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852038301] [2021-12-14 17:08:57,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:08:57,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:08:57,798 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 17:08:57,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1648638486] [2021-12-14 17:08:57,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:08:57,799 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:08:57,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:08:57,808 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) [2021-12-14 17:08:57,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-14 17:08:58,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:08:58,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 3376 conjuncts, 55 conjunts are in the unsatisfiable core [2021-12-14 17:08:58,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:08:59,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2021-12-14 17:08:59,215 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 21 treesize of output 13 [2021-12-14 17:08:59,390 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 256 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2021-12-14 17:08:59,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:08:59,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:08:59,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852038301] [2021-12-14 17:08:59,391 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 17:08:59,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648638486] [2021-12-14 17:08:59,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648638486] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:08:59,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:08:59,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-14 17:08:59,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821833147] [2021-12-14 17:08:59,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:08:59,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-14 17:08:59,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:08:59,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-14 17:08:59,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-14 17:08:59,395 INFO L87 Difference]: Start difference. First operand 341 states and 473 transitions. Second operand has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 13 states have internal predecessors, (101), 6 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2021-12-14 17:08:59,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:08:59,924 INFO L93 Difference]: Finished difference Result 685 states and 963 transitions. [2021-12-14 17:08:59,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 17:08:59,925 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 13 states have internal predecessors, (101), 6 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 266 [2021-12-14 17:08:59,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:08:59,927 INFO L225 Difference]: With dead ends: 685 [2021-12-14 17:08:59,927 INFO L226 Difference]: Without dead ends: 406 [2021-12-14 17:08:59,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 251 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2021-12-14 17:08:59,929 INFO L933 BasicCegarLoop]: 403 mSDtfsCounter, 110 mSDsluCounter, 3346 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 3749 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 17:08:59,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 3749 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 453 Invalid, 0 Unknown, 62 Unchecked, 0.3s Time] [2021-12-14 17:08:59,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2021-12-14 17:08:59,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 362. [2021-12-14 17:08:59,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 235 states have (on average 1.225531914893617) internal successors, (288), 238 states have internal predecessors, (288), 99 states have call successors, (99), 24 states have call predecessors, (99), 26 states have return successors, (116), 99 states have call predecessors, (116), 97 states have call successors, (116) [2021-12-14 17:08:59,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 503 transitions. [2021-12-14 17:08:59,943 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 503 transitions. Word has length 266 [2021-12-14 17:08:59,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:08:59,943 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 503 transitions. [2021-12-14 17:08:59,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 13 states have internal predecessors, (101), 6 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2021-12-14 17:08:59,943 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 503 transitions. [2021-12-14 17:08:59,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2021-12-14 17:08:59,945 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:08:59,945 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:08:59,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-14 17:09:00,163 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,SelfDestructingSolverStorable11 [2021-12-14 17:09:00,163 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:09:00,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:09:00,163 INFO L85 PathProgramCache]: Analyzing trace with hash 643150753, now seen corresponding path program 1 times [2021-12-14 17:09:00,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:09:00,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316414196] [2021-12-14 17:09:00,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:09:00,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:09:00,211 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 17:09:00,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [165247903] [2021-12-14 17:09:00,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:09:00,212 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:09:00,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:09:00,213 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) [2021-12-14 17:09:00,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-14 17:09:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:09:00,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 3379 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-14 17:09:00,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:09:01,154 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2021-12-14 17:09:01,154 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:09:01,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:09:01,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316414196] [2021-12-14 17:09:01,154 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 17:09:01,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165247903] [2021-12-14 17:09:01,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165247903] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:09:01,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:09:01,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:09:01,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806982084] [2021-12-14 17:09:01,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:09:01,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:09:01,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:09:01,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:09:01,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:09:01,156 INFO L87 Difference]: Start difference. First operand 362 states and 503 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-14 17:09:01,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:09:01,190 INFO L93 Difference]: Finished difference Result 699 states and 989 transitions. [2021-12-14 17:09:01,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 17:09:01,190 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 266 [2021-12-14 17:09:01,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:09:01,192 INFO L225 Difference]: With dead ends: 699 [2021-12-14 17:09:01,192 INFO L226 Difference]: Without dead ends: 382 [2021-12-14 17:09:01,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:09:01,194 INFO L933 BasicCegarLoop]: 434 mSDtfsCounter, 8 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:09:01,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 1710 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:09:01,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-12-14 17:09:01,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 370. [2021-12-14 17:09:01,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 243 states have (on average 1.2222222222222223) internal successors, (297), 246 states have internal predecessors, (297), 99 states have call successors, (99), 24 states have call predecessors, (99), 26 states have return successors, (116), 99 states have call predecessors, (116), 97 states have call successors, (116) [2021-12-14 17:09:01,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 512 transitions. [2021-12-14 17:09:01,207 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 512 transitions. Word has length 266 [2021-12-14 17:09:01,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:09:01,208 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 512 transitions. [2021-12-14 17:09:01,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-14 17:09:01,208 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 512 transitions. [2021-12-14 17:09:01,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2021-12-14 17:09:01,209 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:09:01,210 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:09:01,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-14 17:09:01,427 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,SelfDestructingSolverStorable12 [2021-12-14 17:09:01,427 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:09:01,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:09:01,428 INFO L85 PathProgramCache]: Analyzing trace with hash -971336142, now seen corresponding path program 1 times [2021-12-14 17:09:01,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:09:01,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673711117] [2021-12-14 17:09:01,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:09:01,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:09:01,473 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 17:09:01,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1136298491] [2021-12-14 17:09:01,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:09:01,474 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:09:01,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:09:01,475 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) [2021-12-14 17:09:01,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-14 17:09:02,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:09:02,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 3378 conjuncts, 42 conjunts are in the unsatisfiable core [2021-12-14 17:09:02,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:09:02,624 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 15 treesize of output 7 [2021-12-14 17:09:02,626 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 15 treesize of output 7 [2021-12-14 17:09:02,788 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2021-12-14 17:09:02,788 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:09:02,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:09:02,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673711117] [2021-12-14 17:09:02,789 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 17:09:02,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136298491] [2021-12-14 17:09:02,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136298491] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:09:02,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:09:02,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-14 17:09:02,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968742613] [2021-12-14 17:09:02,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:09:02,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-14 17:09:02,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:09:02,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-14 17:09:02,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-12-14 17:09:02,790 INFO L87 Difference]: Start difference. First operand 370 states and 512 transitions. Second operand has 13 states, 13 states have (on average 8.538461538461538) internal successors, (111), 13 states have internal predecessors, (111), 7 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (23), 7 states have call predecessors, (23), 7 states have call successors, (23) [2021-12-14 17:09:03,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:09:03,434 INFO L93 Difference]: Finished difference Result 782 states and 1095 transitions. [2021-12-14 17:09:03,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 17:09:03,435 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.538461538461538) internal successors, (111), 13 states have internal predecessors, (111), 7 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (23), 7 states have call predecessors, (23), 7 states have call successors, (23) Word has length 268 [2021-12-14 17:09:03,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:09:03,437 INFO L225 Difference]: With dead ends: 782 [2021-12-14 17:09:03,437 INFO L226 Difference]: Without dead ends: 453 [2021-12-14 17:09:03,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 255 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-12-14 17:09:03,439 INFO L933 BasicCegarLoop]: 398 mSDtfsCounter, 102 mSDsluCounter, 3679 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 4077 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 89 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-14 17:09:03,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 4077 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 734 Invalid, 0 Unknown, 89 Unchecked, 0.5s Time] [2021-12-14 17:09:03,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2021-12-14 17:09:03,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 418. [2021-12-14 17:09:03,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 284 states have (on average 1.221830985915493) internal successors, (347), 288 states have internal predecessors, (347), 102 states have call successors, (102), 25 states have call predecessors, (102), 30 states have return successors, (141), 104 states have call predecessors, (141), 100 states have call successors, (141) [2021-12-14 17:09:03,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 590 transitions. [2021-12-14 17:09:03,455 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 590 transitions. Word has length 268 [2021-12-14 17:09:03,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:09:03,455 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 590 transitions. [2021-12-14 17:09:03,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.538461538461538) internal successors, (111), 13 states have internal predecessors, (111), 7 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (23), 7 states have call predecessors, (23), 7 states have call successors, (23) [2021-12-14 17:09:03,455 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 590 transitions. [2021-12-14 17:09:03,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2021-12-14 17:09:03,457 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:09:03,457 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:09:03,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-14 17:09:03,676 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,SelfDestructingSolverStorable13 [2021-12-14 17:09:03,676 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:09:03,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:09:03,676 INFO L85 PathProgramCache]: Analyzing trace with hash 452560748, now seen corresponding path program 1 times [2021-12-14 17:09:03,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:09:03,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756973934] [2021-12-14 17:09:03,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:09:03,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:09:03,719 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 17:09:03,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [952354366] [2021-12-14 17:09:03,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:09:03,720 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:09:03,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:09:03,721 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) [2021-12-14 17:09:03,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-14 17:09:04,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:09:04,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 3363 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-14 17:09:04,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:09:04,595 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 205 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2021-12-14 17:09:04,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:09:04,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:09:04,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756973934] [2021-12-14 17:09:04,596 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 17:09:04,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952354366] [2021-12-14 17:09:04,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952354366] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:09:04,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:09:04,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:09:04,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138919288] [2021-12-14 17:09:04,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:09:04,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:09:04,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:09:04,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:09:04,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:09:04,603 INFO L87 Difference]: Start difference. First operand 418 states and 590 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-14 17:09:04,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:09:04,651 INFO L93 Difference]: Finished difference Result 803 states and 1178 transitions. [2021-12-14 17:09:04,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:09:04,652 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 268 [2021-12-14 17:09:04,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:09:04,655 INFO L225 Difference]: With dead ends: 803 [2021-12-14 17:09:04,656 INFO L226 Difference]: Without dead ends: 421 [2021-12-14 17:09:04,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:09:04,661 INFO L933 BasicCegarLoop]: 423 mSDtfsCounter, 7 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1249 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:09:04,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1249 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:09:04,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2021-12-14 17:09:04,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 418. [2021-12-14 17:09:04,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 284 states have (on average 1.2183098591549295) internal successors, (346), 288 states have internal predecessors, (346), 102 states have call successors, (102), 25 states have call predecessors, (102), 30 states have return successors, (141), 104 states have call predecessors, (141), 100 states have call successors, (141) [2021-12-14 17:09:04,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 589 transitions. [2021-12-14 17:09:04,679 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 589 transitions. Word has length 268 [2021-12-14 17:09:04,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:09:04,679 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 589 transitions. [2021-12-14 17:09:04,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-14 17:09:04,680 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 589 transitions. [2021-12-14 17:09:04,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2021-12-14 17:09:04,682 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:09:04,682 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:09:04,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-14 17:09:04,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:09:04,904 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:09:04,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:09:04,905 INFO L85 PathProgramCache]: Analyzing trace with hash 214566414, now seen corresponding path program 1 times [2021-12-14 17:09:04,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:09:04,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606533534] [2021-12-14 17:09:04,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:09:04,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:09:04,951 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 17:09:04,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1481118899] [2021-12-14 17:09:04,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:09:04,952 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:09:04,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:09:04,953 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) [2021-12-14 17:09:04,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-14 17:09:05,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:09:05,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 3388 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-14 17:09:05,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:09:05,849 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 206 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2021-12-14 17:09:05,849 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:09:05,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:09:05,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606533534] [2021-12-14 17:09:05,849 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 17:09:05,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481118899] [2021-12-14 17:09:05,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481118899] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:09:05,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:09:05,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:09:05,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127977237] [2021-12-14 17:09:05,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:09:05,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:09:05,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:09:05,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:09:05,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:09:05,851 INFO L87 Difference]: Start difference. First operand 418 states and 589 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-14 17:09:06,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:09:06,015 INFO L93 Difference]: Finished difference Result 807 states and 1190 transitions. [2021-12-14 17:09:06,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 17:09:06,016 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 270 [2021-12-14 17:09:06,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:09:06,018 INFO L225 Difference]: With dead ends: 807 [2021-12-14 17:09:06,018 INFO L226 Difference]: Without dead ends: 425 [2021-12-14 17:09:06,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:09:06,020 INFO L933 BasicCegarLoop]: 425 mSDtfsCounter, 15 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1596 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:09:06,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 1596 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 17:09:06,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2021-12-14 17:09:06,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 419. [2021-12-14 17:09:06,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 285 states have (on average 1.2175438596491228) internal successors, (347), 289 states have internal predecessors, (347), 102 states have call successors, (102), 25 states have call predecessors, (102), 30 states have return successors, (141), 104 states have call predecessors, (141), 100 states have call successors, (141) [2021-12-14 17:09:06,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 590 transitions. [2021-12-14 17:09:06,032 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 590 transitions. Word has length 270 [2021-12-14 17:09:06,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:09:06,032 INFO L470 AbstractCegarLoop]: Abstraction has 419 states and 590 transitions. [2021-12-14 17:09:06,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-14 17:09:06,033 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 590 transitions. [2021-12-14 17:09:06,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2021-12-14 17:09:06,034 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:09:06,034 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:09:06,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-14 17:09:06,256 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,SelfDestructingSolverStorable15 [2021-12-14 17:09:06,256 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:09:06,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:09:06,257 INFO L85 PathProgramCache]: Analyzing trace with hash -312827636, now seen corresponding path program 1 times [2021-12-14 17:09:06,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:09:06,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580846391] [2021-12-14 17:09:06,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:09:06,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:09:06,299 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 17:09:06,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [482124706] [2021-12-14 17:09:06,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:09:06,300 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:09:06,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:09:06,301 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) [2021-12-14 17:09:06,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-14 17:09:06,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:09:06,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 3383 conjuncts, 60 conjunts are in the unsatisfiable core [2021-12-14 17:09:06,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:09:07,125 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2684 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_2684))) is different from true [2021-12-14 17:09:07,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-14 17:09:07,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2021-12-14 17:09:07,506 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2021-12-14 17:09:07,506 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:09:07,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:09:07,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580846391] [2021-12-14 17:09:07,507 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 17:09:07,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482124706] [2021-12-14 17:09:07,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482124706] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:09:07,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:09:07,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-14 17:09:07,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339702401] [2021-12-14 17:09:07,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:09:07,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-14 17:09:07,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:09:07,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-14 17:09:07,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=122, Unknown=11, NotChecked=22, Total=182 [2021-12-14 17:09:07,510 INFO L87 Difference]: Start difference. First operand 419 states and 590 transitions. Second operand has 14 states, 14 states have (on average 7.5) internal successors, (105), 13 states have internal predecessors, (105), 7 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2021-12-14 17:09:08,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:09:08,601 INFO L93 Difference]: Finished difference Result 991 states and 1499 transitions. [2021-12-14 17:09:08,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-14 17:09:08,601 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.5) internal successors, (105), 13 states have internal predecessors, (105), 7 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) Word has length 270 [2021-12-14 17:09:08,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:09:08,606 INFO L225 Difference]: With dead ends: 991 [2021-12-14 17:09:08,606 INFO L226 Difference]: Without dead ends: 608 [2021-12-14 17:09:08,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=126, Invalid=454, Unknown=24, NotChecked=46, Total=650 [2021-12-14 17:09:08,608 INFO L933 BasicCegarLoop]: 403 mSDtfsCounter, 283 mSDsluCounter, 2322 mSDsCounter, 0 mSdLazyCounter, 1446 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 2725 SdHoareTripleChecker+Invalid, 3609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 1446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1994 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-14 17:09:08,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 2725 Invalid, 3609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 1446 Invalid, 0 Unknown, 1994 Unchecked, 0.9s Time] [2021-12-14 17:09:08,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-12-14 17:09:08,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 428. [2021-12-14 17:09:08,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 291 states have (on average 1.1993127147766323) internal successors, (349), 294 states have internal predecessors, (349), 102 states have call successors, (102), 25 states have call predecessors, (102), 33 states have return successors, (164), 108 states have call predecessors, (164), 100 states have call successors, (164) [2021-12-14 17:09:08,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 615 transitions. [2021-12-14 17:09:08,624 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 615 transitions. Word has length 270 [2021-12-14 17:09:08,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:09:08,625 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 615 transitions. [2021-12-14 17:09:08,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.5) internal successors, (105), 13 states have internal predecessors, (105), 7 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2021-12-14 17:09:08,626 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 615 transitions. [2021-12-14 17:09:08,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2021-12-14 17:09:08,627 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:09:08,627 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:09:08,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-12-14 17:09:08,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-14 17:09:08,848 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:09:08,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:09:08,848 INFO L85 PathProgramCache]: Analyzing trace with hash 327777536, now seen corresponding path program 1 times [2021-12-14 17:09:08,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:09:08,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060879140] [2021-12-14 17:09:08,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:09:08,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:09:08,893 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 17:09:08,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [527990054] [2021-12-14 17:09:08,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:09:08,894 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:09:08,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:09:08,895 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) [2021-12-14 17:09:08,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-14 17:09:09,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:09:09,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 3393 conjuncts, 108 conjunts are in the unsatisfiable core [2021-12-14 17:09:09,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:09:09,630 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 [2021-12-14 17:09:10,031 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-14 17:09:10,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-12-14 17:09:12,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:09:12,090 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 [2021-12-14 17:09:14,314 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|v___CPROVER_overflow_mult_~#c~1.base_140| Int) (v_ArrVal_2909 Int)) (and (= (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_140| v_ArrVal_2909) |c_#valid|) (= 0 (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_140|)))) (exists ((v_ArrVal_2910 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2910)))) is different from true [2021-12-14 17:09:14,812 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2912 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2912))) is different from true [2021-12-14 17:09:15,898 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 260 proven. 20 refuted. 2 times theorem prover too weak. 165 trivial. 3 not checked. [2021-12-14 17:09:15,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:09:16,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:09:16,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060879140] [2021-12-14 17:09:16,534 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 17:09:16,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527990054] [2021-12-14 17:09:16,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527990054] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:09:16,534 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:09:16,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2021-12-14 17:09:16,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912868966] [2021-12-14 17:09:16,534 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-14 17:09:16,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-14 17:09:16,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:09:16,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-14 17:09:16,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=814, Unknown=23, NotChecked=118, Total=1056 [2021-12-14 17:09:16,536 INFO L87 Difference]: Start difference. First operand 428 states and 615 transitions. Second operand has 32 states, 28 states have (on average 4.785714285714286) internal successors, (134), 27 states have internal predecessors, (134), 12 states have call successors, (28), 7 states have call predecessors, (28), 12 states have return successors, (26), 12 states have call predecessors, (26), 12 states have call successors, (26) [2021-12-14 17:09:17,017 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2912 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2912))) (exists ((|v___CPROVER_overflow_mult_~#c~1.base_140| Int) (v_ArrVal_2909 Int)) (and (= (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_140| v_ArrVal_2909) |c_#valid|) (= 0 (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_140|)))) (exists ((v_ArrVal_2910 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2910)))) is different from true [2021-12-14 17:09:18,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:09:18,744 INFO L93 Difference]: Finished difference Result 1026 states and 1569 transitions. [2021-12-14 17:09:18,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-12-14 17:09:18,744 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 28 states have (on average 4.785714285714286) internal successors, (134), 27 states have internal predecessors, (134), 12 states have call successors, (28), 7 states have call predecessors, (28), 12 states have return successors, (26), 12 states have call predecessors, (26), 12 states have call successors, (26) Word has length 274 [2021-12-14 17:09:18,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:09:18,748 INFO L225 Difference]: With dead ends: 1026 [2021-12-14 17:09:18,748 INFO L226 Difference]: Without dead ends: 648 [2021-12-14 17:09:18,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 394 SyntacticMatches, 8 SemanticMatches, 43 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=168, Invalid=1531, Unknown=35, NotChecked=246, Total=1980 [2021-12-14 17:09:18,750 INFO L933 BasicCegarLoop]: 436 mSDtfsCounter, 393 mSDsluCounter, 3083 mSDsCounter, 0 mSdLazyCounter, 2481 mSolverCounterSat, 535 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 3519 SdHoareTripleChecker+Invalid, 8195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 535 IncrementalHoareTripleChecker+Valid, 2481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5179 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-14 17:09:18,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [448 Valid, 3519 Invalid, 8195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [535 Valid, 2481 Invalid, 0 Unknown, 5179 Unchecked, 1.8s Time] [2021-12-14 17:09:18,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2021-12-14 17:09:18,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 476. [2021-12-14 17:09:18,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 327 states have (on average 1.1957186544342508) internal successors, (391), 333 states have internal predecessors, (391), 107 states have call successors, (107), 28 states have call predecessors, (107), 40 states have return successors, (199), 114 states have call predecessors, (199), 105 states have call successors, (199) [2021-12-14 17:09:18,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 697 transitions. [2021-12-14 17:09:18,772 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 697 transitions. Word has length 274 [2021-12-14 17:09:18,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:09:18,773 INFO L470 AbstractCegarLoop]: Abstraction has 476 states and 697 transitions. [2021-12-14 17:09:18,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 28 states have (on average 4.785714285714286) internal successors, (134), 27 states have internal predecessors, (134), 12 states have call successors, (28), 7 states have call predecessors, (28), 12 states have return successors, (26), 12 states have call predecessors, (26), 12 states have call successors, (26) [2021-12-14 17:09:18,773 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 697 transitions. [2021-12-14 17:09:18,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2021-12-14 17:09:18,775 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:09:18,775 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:09:18,812 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-12-14 17:09:18,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-14 17:09:18,999 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:09:18,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:09:18,999 INFO L85 PathProgramCache]: Analyzing trace with hash -538409016, now seen corresponding path program 1 times [2021-12-14 17:09:19,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:09:19,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038085176] [2021-12-14 17:09:19,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:09:19,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:09:19,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:09:19,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:09:19,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:09:19,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:09:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:09:19,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-14 17:09:19,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:09:19,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 17:09:19,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:09:19,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:09:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:09:19,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-14 17:09:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:09:19,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 17:09:19,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:09:19,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:09:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:09:19,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-14 17:09:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:09:19,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-14 17:09:19,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:09:19,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038085176] [2021-12-14 17:09:19,408 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-12-14 17:09:19,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764715745] [2021-12-14 17:09:19,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:09:19,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:09:19,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:09:19,425 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) [2021-12-14 17:09:19,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-14 17:09:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:09:20,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 3388 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 17:09:20,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:09:20,574 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-12-14 17:09:20,574 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:09:20,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764715745] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:09:20,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:09:20,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 17:09:20,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858047883] [2021-12-14 17:09:20,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:09:20,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:09:20,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:09:20,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:09:20,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:09:20,575 INFO L87 Difference]: Start difference. First operand 476 states and 697 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-14 17:09:20,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:09:20,592 INFO L93 Difference]: Finished difference Result 928 states and 1362 transitions. [2021-12-14 17:09:20,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:09:20,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 282 [2021-12-14 17:09:20,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:09:20,595 INFO L225 Difference]: With dead ends: 928 [2021-12-14 17:09:20,595 INFO L226 Difference]: Without dead ends: 470 [2021-12-14 17:09:20,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:09:20,597 INFO L933 BasicCegarLoop]: 419 mSDtfsCounter, 0 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:09:20,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 833 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:09:20,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2021-12-14 17:09:20,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 470. [2021-12-14 17:09:20,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 324 states have (on average 1.1944444444444444) internal successors, (387), 329 states have internal predecessors, (387), 105 states have call successors, (105), 28 states have call predecessors, (105), 39 states have return successors, (194), 112 states have call predecessors, (194), 103 states have call successors, (194) [2021-12-14 17:09:20,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 686 transitions. [2021-12-14 17:09:20,613 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 686 transitions. Word has length 282 [2021-12-14 17:09:20,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:09:20,614 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 686 transitions. [2021-12-14 17:09:20,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-14 17:09:20,614 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 686 transitions. [2021-12-14 17:09:20,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2021-12-14 17:09:20,616 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:09:20,616 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:09:20,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-12-14 17:09:20,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:09:20,838 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:09:20,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:09:20,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1572789188, now seen corresponding path program 1 times [2021-12-14 17:09:20,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:09:20,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238388743] [2021-12-14 17:09:20,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:09:20,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:09:20,886 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 17:09:20,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [121985777] [2021-12-14 17:09:20,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:09:20,887 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:09:20,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:09:20,901 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) [2021-12-14 17:09:20,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-14 17:09:21,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:09:21,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 3444 conjuncts, 42 conjunts are in the unsatisfiable core [2021-12-14 17:09:21,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:09:21,628 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 21 treesize of output 9 [2021-12-14 17:09:22,107 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 92 proven. 13 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2021-12-14 17:09:22,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:09:23,114 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2021-12-14 17:09:23,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:09:23,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238388743] [2021-12-14 17:09:23,115 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 17:09:23,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121985777] [2021-12-14 17:09:23,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121985777] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-14 17:09:23,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:09:23,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [19] total 27 [2021-12-14 17:09:23,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674284694] [2021-12-14 17:09:23,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:09:23,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-14 17:09:23,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:09:23,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-14 17:09:23,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=647, Unknown=0, NotChecked=0, Total=702 [2021-12-14 17:09:23,116 INFO L87 Difference]: Start difference. First operand 470 states and 686 transitions. Second operand has 15 states, 14 states have (on average 7.642857142857143) internal successors, (107), 10 states have internal predecessors, (107), 2 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (25), 5 states have call predecessors, (25), 1 states have call successors, (25) [2021-12-14 17:09:23,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:09:23,275 INFO L93 Difference]: Finished difference Result 896 states and 1337 transitions. [2021-12-14 17:09:23,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 17:09:23,276 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 7.642857142857143) internal successors, (107), 10 states have internal predecessors, (107), 2 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (25), 5 states have call predecessors, (25), 1 states have call successors, (25) Word has length 298 [2021-12-14 17:09:23,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:09:23,278 INFO L225 Difference]: With dead ends: 896 [2021-12-14 17:09:23,279 INFO L226 Difference]: Without dead ends: 480 [2021-12-14 17:09:23,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 569 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=803, Unknown=0, NotChecked=0, Total=870 [2021-12-14 17:09:23,282 INFO L933 BasicCegarLoop]: 436 mSDtfsCounter, 19 mSDsluCounter, 5616 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 6052 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:09:23,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 6052 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 17:09:23,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-12-14 17:09:23,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 462. [2021-12-14 17:09:23,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 317 states have (on average 1.1892744479495267) internal successors, (377), 319 states have internal predecessors, (377), 105 states have call successors, (105), 28 states have call predecessors, (105), 38 states have return successors, (189), 114 states have call predecessors, (189), 103 states have call successors, (189) [2021-12-14 17:09:23,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 671 transitions. [2021-12-14 17:09:23,302 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 671 transitions. Word has length 298 [2021-12-14 17:09:23,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:09:23,302 INFO L470 AbstractCegarLoop]: Abstraction has 462 states and 671 transitions. [2021-12-14 17:09:23,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 7.642857142857143) internal successors, (107), 10 states have internal predecessors, (107), 2 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (25), 5 states have call predecessors, (25), 1 states have call successors, (25) [2021-12-14 17:09:23,303 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 671 transitions. [2021-12-14 17:09:23,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-12-14 17:09:23,304 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:09:23,304 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:09:23,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-12-14 17:09:23,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:09:23,544 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:09:23,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:09:23,544 INFO L85 PathProgramCache]: Analyzing trace with hash -692997029, now seen corresponding path program 1 times [2021-12-14 17:09:23,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:09:23,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649902005] [2021-12-14 17:09:23,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:09:23,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:09:23,595 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 17:09:23,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1518673165] [2021-12-14 17:09:23,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:09:23,596 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:09:23,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:09:23,608 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:09:23,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-12-14 17:09:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:09:24,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 3442 conjuncts, 154 conjunts are in the unsatisfiable core [2021-12-14 17:09:24,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:09:24,364 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 [2021-12-14 17:09:24,707 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-14 17:09:24,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22