./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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_either_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 355537246d5dfb9690a92cc5d0cbf014736bcc62122f38f5559ea0fbf5331d1c --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 15:37:08,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 15:37:08,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 15:37:08,350 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 15:37:08,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 15:37:08,356 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 15:37:08,358 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 15:37:08,363 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 15:37:08,365 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 15:37:08,369 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 15:37:08,370 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 15:37:08,371 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 15:37:08,371 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 15:37:08,373 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 15:37:08,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 15:37:08,376 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 15:37:08,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 15:37:08,378 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 15:37:08,381 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 15:37:08,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 15:37:08,386 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 15:37:08,387 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 15:37:08,388 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 15:37:08,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 15:37:08,392 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 15:37:08,393 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 15:37:08,393 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 15:37:08,394 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 15:37:08,395 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 15:37:08,395 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 15:37:08,395 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 15:37:08,396 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 15:37:08,397 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 15:37:08,398 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 15:37:08,399 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 15:37:08,399 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 15:37:08,400 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 15:37:08,400 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 15:37:08,400 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 15:37:08,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 15:37:08,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 15:37:08,402 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-21 15:37:08,425 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 15:37:08,425 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 15:37:08,426 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 15:37:08,426 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 15:37:08,427 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 15:37:08,427 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 15:37:08,427 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 15:37:08,427 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 15:37:08,428 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 15:37:08,428 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 15:37:08,428 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 15:37:08,429 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 15:37:08,429 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 15:37:08,429 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 15:37:08,429 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 15:37:08,429 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 15:37:08,429 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 15:37:08,430 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 15:37:08,430 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 15:37:08,430 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 15:37:08,430 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 15:37:08,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:37:08,430 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 15:37:08,430 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 15:37:08,431 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 15:37:08,431 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 15:37:08,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 15:37:08,432 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 15:37:08,432 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 15:37:08,432 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 15:37:08,432 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 15:37:08,433 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 355537246d5dfb9690a92cc5d0cbf014736bcc62122f38f5559ea0fbf5331d1c [2021-12-21 15:37:08,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 15:37:08,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 15:37:08,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 15:37:08,668 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 15:37:08,670 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 15:37:08,671 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i [2021-12-21 15:37:08,718 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0202fb7ef/66b3f0695ac142c5a789df55a3e89ad4/FLAGb3cfcbc8a [2021-12-21 15:37:09,291 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 15:37:09,291 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i [2021-12-21 15:37:09,320 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0202fb7ef/66b3f0695ac142c5a789df55a3e89ad4/FLAGb3cfcbc8a [2021-12-21 15:37:09,765 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0202fb7ef/66b3f0695ac142c5a789df55a3e89ad4 [2021-12-21 15:37:09,770 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 15:37:09,772 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 15:37:09,773 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 15:37:09,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 15:37:09,776 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 15:37:09,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:37:09" (1/1) ... [2021-12-21 15:37:09,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f1873a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:37:09, skipping insertion in model container [2021-12-21 15:37:09,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:37:09" (1/1) ... [2021-12-21 15:37:09,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 15:37:09,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 15:37:10,311 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_either_harness.i[4506,4519] [2021-12-21 15:37:10,317 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_either_harness.i[4566,4579] [2021-12-21 15:37:11,066 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,067 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,067 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,068 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,069 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,079 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,079 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,080 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,081 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,082 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,082 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,082 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,083 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,290 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-21 15:37:11,291 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-21 15:37:11,291 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-21 15:37:11,292 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-21 15:37:11,293 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-21 15:37:11,293 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-21 15:37:11,294 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-21 15:37:11,294 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-21 15:37:11,297 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-21 15:37:11,299 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-21 15:37:11,402 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-21 15:37:11,414 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,422 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,425 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,434 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,514 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,515 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,515 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,516 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,517 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,517 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,518 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,518 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,519 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,519 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,519 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,519 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,520 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,522 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,523 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,523 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,523 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,528 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,529 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,540 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,540 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,540 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,555 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:37:11,571 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 15:37:11,588 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_either_harness.i[4506,4519] [2021-12-21 15:37:11,589 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_either_harness.i[4566,4579] [2021-12-21 15:37:11,611 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,611 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,612 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,612 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,613 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,618 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,618 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,618 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,619 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,619 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,620 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,620 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,620 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,653 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-21 15:37:11,654 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-21 15:37:11,654 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-21 15:37:11,654 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-21 15:37:11,655 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-21 15:37:11,655 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-21 15:37:11,656 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-21 15:37:11,656 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-21 15:37:11,656 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-21 15:37:11,657 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-21 15:37:11,681 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-21 15:37:11,692 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,692 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,693 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,695 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,708 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,708 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,709 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,709 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,709 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,709 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,709 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,710 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,710 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,710 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,710 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,711 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,711 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,712 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,712 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,712 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,713 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,714 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,714 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,717 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,717 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,717 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:37:11,720 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:37:11,894 INFO L208 MainTranslator]: Completed translation [2021-12-21 15:37:11,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:37:11 WrapperNode [2021-12-21 15:37:11,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 15:37:11,896 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 15:37:11,897 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 15:37:11,897 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 15:37:11,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:37:11" (1/1) ... [2021-12-21 15:37:12,019 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:37:11" (1/1) ... [2021-12-21 15:37:12,109 INFO L137 Inliner]: procedures = 697, calls = 1887, calls flagged for inlining = 60, calls inlined = 15, statements flattened = 919 [2021-12-21 15:37:12,109 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 15:37:12,110 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 15:37:12,110 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 15:37:12,110 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 15:37:12,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:37:11" (1/1) ... [2021-12-21 15:37:12,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:37:11" (1/1) ... [2021-12-21 15:37:12,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:37:11" (1/1) ... [2021-12-21 15:37:12,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:37:11" (1/1) ... [2021-12-21 15:37:12,184 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:37:11" (1/1) ... [2021-12-21 15:37:12,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:37:11" (1/1) ... [2021-12-21 15:37:12,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:37:11" (1/1) ... [2021-12-21 15:37:12,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 15:37:12,225 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 15:37:12,225 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 15:37:12,226 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 15:37:12,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:37:11" (1/1) ... [2021-12-21 15:37:12,231 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:37:12,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:37:12,250 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) [2021-12-21 15:37:12,285 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 [2021-12-21 15:37:12,305 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_either [2021-12-21 15:37:12,305 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_either [2021-12-21 15:37:12,305 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2021-12-21 15:37:12,305 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2021-12-21 15:37:12,306 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-12-21 15:37:12,306 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-12-21 15:37:12,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 15:37:12,306 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-12-21 15:37:12,306 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-12-21 15:37:12,306 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-12-21 15:37:12,307 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-12-21 15:37:12,307 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-21 15:37:12,307 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-21 15:37:12,307 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2021-12-21 15:37:12,307 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2021-12-21 15:37:12,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 15:37:12,308 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-21 15:37:12,310 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-21 15:37:12,310 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-21 15:37:12,310 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-21 15:37:12,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 15:37:12,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 15:37:12,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 15:37:12,311 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2021-12-21 15:37:12,311 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2021-12-21 15:37:12,312 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-12-21 15:37:12,316 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-12-21 15:37:12,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 15:37:12,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 15:37:12,316 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-21 15:37:12,316 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-21 15:37:12,316 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-21 15:37:12,316 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-21 15:37:12,316 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-12-21 15:37:12,317 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-12-21 15:37:12,317 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-12-21 15:37:12,317 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-12-21 15:37:12,317 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-12-21 15:37:12,317 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-12-21 15:37:12,317 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-21 15:37:12,317 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-21 15:37:12,317 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-12-21 15:37:12,318 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-12-21 15:37:12,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 15:37:12,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 15:37:12,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 15:37:12,318 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2021-12-21 15:37:12,318 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2021-12-21 15:37:12,318 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-21 15:37:12,318 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-21 15:37:12,318 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-21 15:37:12,318 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-21 15:37:12,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 15:37:12,319 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-12-21 15:37:12,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-12-21 15:37:12,319 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2021-12-21 15:37:12,319 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2021-12-21 15:37:12,319 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-21 15:37:12,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-21 15:37:12,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 15:37:12,710 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 15:37:12,712 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 15:37:13,617 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 15:37:13,624 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 15:37:13,624 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-12-21 15:37:13,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:37:13 BoogieIcfgContainer [2021-12-21 15:37:13,626 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 15:37:13,627 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 15:37:13,627 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 15:37:13,629 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 15:37:13,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 03:37:09" (1/3) ... [2021-12-21 15:37:13,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bde0238 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:37:13, skipping insertion in model container [2021-12-21 15:37:13,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:37:11" (2/3) ... [2021-12-21 15:37:13,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bde0238 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:37:13, skipping insertion in model container [2021-12-21 15:37:13,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:37:13" (3/3) ... [2021-12-21 15:37:13,631 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_either_harness.i [2021-12-21 15:37:13,635 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 15:37:13,635 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-21 15:37:13,667 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 15:37:13,671 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 [2021-12-21 15:37:13,672 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-21 15:37:13,690 INFO L276 IsEmpty]: Start isEmpty. Operand has 358 states, 218 states have (on average 1.2660550458715596) internal successors, (276), 221 states have internal predecessors, (276), 113 states have call successors, (113), 24 states have call predecessors, (113), 24 states have return successors, (113), 113 states have call predecessors, (113), 113 states have call successors, (113) [2021-12-21 15:37:13,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-21 15:37:13,700 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:37:13,701 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] [2021-12-21 15:37:13,701 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:37:13,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:37:13,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1703596242, now seen corresponding path program 1 times [2021-12-21 15:37:13,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:37:13,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597401893] [2021-12-21 15:37:13,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:13,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:37:14,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:14,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:37:14,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:14,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:37:14,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:14,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 15:37:14,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:14,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-21 15:37:14,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:14,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:37:14,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:14,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 15:37:14,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:14,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 15:37:14,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:14,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:37:14,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:14,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 15:37:14,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:14,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 15:37:14,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:14,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-21 15:37:14,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:14,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 15:37:14,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:14,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 15:37:14,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:14,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 15:37:14,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:14,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-21 15:37:14,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:14,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 15:37:14,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:14,446 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-12-21 15:37:14,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:37:14,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597401893] [2021-12-21 15:37:14,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597401893] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:37:14,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:37:14,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 15:37:14,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874488444] [2021-12-21 15:37:14,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:37:14,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 15:37:14,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:37:14,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 15:37:14,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-21 15:37:14,480 INFO L87 Difference]: Start difference. First operand has 358 states, 218 states have (on average 1.2660550458715596) internal successors, (276), 221 states have internal predecessors, (276), 113 states have call successors, (113), 24 states have call predecessors, (113), 24 states have return successors, (113), 113 states have call predecessors, (113), 113 states have call successors, (113) Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 2 states have internal predecessors, (35), 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) [2021-12-21 15:37:15,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:37:15,501 INFO L93 Difference]: Finished difference Result 821 states and 1341 transitions. [2021-12-21 15:37:15,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 15:37:15,503 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 2 states have internal predecessors, (35), 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 103 [2021-12-21 15:37:15,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:37:15,520 INFO L225 Difference]: With dead ends: 821 [2021-12-21 15:37:15,522 INFO L226 Difference]: Without dead ends: 469 [2021-12-21 15:37:15,530 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 [2021-12-21 15:37:15,534 INFO L933 BasicCegarLoop]: 473 mSDtfsCounter, 267 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 394 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-21 15:37:15,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 623 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [394 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-21 15:37:15,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2021-12-21 15:37:15,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 351. [2021-12-21 15:37:15,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 213 states have (on average 1.2300469483568075) internal successors, (262), 215 states have internal predecessors, (262), 113 states have call successors, (113), 24 states have call predecessors, (113), 23 states have return successors, (111), 111 states have call predecessors, (111), 111 states have call successors, (111) [2021-12-21 15:37:15,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 486 transitions. [2021-12-21 15:37:15,643 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 486 transitions. Word has length 103 [2021-12-21 15:37:15,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:37:15,659 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 486 transitions. [2021-12-21 15:37:15,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 2 states have internal predecessors, (35), 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) [2021-12-21 15:37:15,660 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 486 transitions. [2021-12-21 15:37:15,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-21 15:37:15,669 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:37:15,669 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] [2021-12-21 15:37:15,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 15:37:15,670 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:37:15,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:37:15,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1175202252, now seen corresponding path program 1 times [2021-12-21 15:37:15,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:37:15,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894968286] [2021-12-21 15:37:15,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:15,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:37:15,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:15,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:37:15,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:15,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:37:15,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:15,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 15:37:15,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:15,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-21 15:37:15,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:15,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:37:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:15,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 15:37:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:15,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 15:37:15,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:15,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:37:15,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:15,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 15:37:15,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:15,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 15:37:15,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:16,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-21 15:37:16,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:16,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 15:37:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:16,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 15:37:16,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:16,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 15:37:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:16,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-21 15:37:16,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:16,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 15:37:16,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:16,094 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-12-21 15:37:16,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:37:16,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894968286] [2021-12-21 15:37:16,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894968286] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:37:16,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992706537] [2021-12-21 15:37:16,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:16,095 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:37:16,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:37:16,108 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) [2021-12-21 15:37:16,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 15:37:16,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:16,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 2158 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 15:37:16,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:37:16,600 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-12-21 15:37:16,600 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:37:16,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992706537] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:37:16,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:37:16,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-21 15:37:16,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785954879] [2021-12-21 15:37:16,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:37:16,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 15:37:16,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:37:16,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 15:37:16,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:37:16,603 INFO L87 Difference]: Start difference. First operand 351 states and 486 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 15:37:16,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:37:16,628 INFO L93 Difference]: Finished difference Result 437 states and 596 transitions. [2021-12-21 15:37:16,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 15:37:16,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (16), 2 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 103 [2021-12-21 15:37:16,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:37:16,631 INFO L225 Difference]: With dead ends: 437 [2021-12-21 15:37:16,631 INFO L226 Difference]: Without dead ends: 352 [2021-12-21 15:37:16,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:37:16,632 INFO L933 BasicCegarLoop]: 485 mSDtfsCounter, 0 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 965 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 [2021-12-21 15:37:16,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 965 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 15:37:16,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-12-21 15:37:16,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2021-12-21 15:37:16,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 214 states have (on average 1.2289719626168225) internal successors, (263), 216 states have internal predecessors, (263), 113 states have call successors, (113), 24 states have call predecessors, (113), 23 states have return successors, (111), 111 states have call predecessors, (111), 111 states have call successors, (111) [2021-12-21 15:37:16,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 487 transitions. [2021-12-21 15:37:16,654 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 487 transitions. Word has length 103 [2021-12-21 15:37:16,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:37:16,655 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 487 transitions. [2021-12-21 15:37:16,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 15:37:16,655 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 487 transitions. [2021-12-21 15:37:16,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-21 15:37:16,671 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:37:16,671 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 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] [2021-12-21 15:37:16,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-21 15:37:16,892 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 [2021-12-21 15:37:16,892 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:37:16,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:37:16,893 INFO L85 PathProgramCache]: Analyzing trace with hash -99696786, now seen corresponding path program 1 times [2021-12-21 15:37:16,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:37:16,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281479074] [2021-12-21 15:37:16,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:16,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:37:16,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:17,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:37:17,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:17,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:37:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:17,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 15:37:17,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:17,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-21 15:37:17,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:17,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:37:17,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:17,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 15:37:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:17,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 15:37:17,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:17,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:37:17,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:17,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 15:37:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:17,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 15:37:17,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:17,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-21 15:37:17,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:17,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 15:37:17,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:17,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 15:37:17,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:17,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 15:37:17,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:17,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-21 15:37:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:17,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-21 15:37:17,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:17,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-21 15:37:17,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:17,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-21 15:37:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:17,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-21 15:37:17,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:17,212 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-12-21 15:37:17,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:37:17,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281479074] [2021-12-21 15:37:17,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281479074] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:37:17,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355550342] [2021-12-21 15:37:17,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:17,213 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:37:17,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:37:17,228 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) [2021-12-21 15:37:17,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 15:37:17,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:17,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-21 15:37:17,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:37:17,819 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-12-21 15:37:17,819 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:37:17,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355550342] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:37:17,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:37:17,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2021-12-21 15:37:17,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373480788] [2021-12-21 15:37:17,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:37:17,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:37:17,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:37:17,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:37:17,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-21 15:37:17,821 INFO L87 Difference]: Start difference. First operand 352 states and 487 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-21 15:37:18,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:37:18,024 INFO L93 Difference]: Finished difference Result 670 states and 938 transitions. [2021-12-21 15:37:18,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 15:37:18,024 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 124 [2021-12-21 15:37:18,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:37:18,027 INFO L225 Difference]: With dead ends: 670 [2021-12-21 15:37:18,027 INFO L226 Difference]: Without dead ends: 354 [2021-12-21 15:37:18,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-12-21 15:37:18,029 INFO L933 BasicCegarLoop]: 445 mSDtfsCounter, 504 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:37:18,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [520 Valid, 1717 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 15:37:18,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-12-21 15:37:18,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 354. [2021-12-21 15:37:18,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 215 states have (on average 1.2279069767441861) internal successors, (264), 218 states have internal predecessors, (264), 113 states have call successors, (113), 24 states have call predecessors, (113), 24 states have return successors, (119), 111 states have call predecessors, (119), 111 states have call successors, (119) [2021-12-21 15:37:18,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 496 transitions. [2021-12-21 15:37:18,052 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 496 transitions. Word has length 124 [2021-12-21 15:37:18,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:37:18,053 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 496 transitions. [2021-12-21 15:37:18,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-21 15:37:18,053 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 496 transitions. [2021-12-21 15:37:18,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-21 15:37:18,055 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:37:18,055 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:37:18,079 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-21 15:37:18,271 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 [2021-12-21 15:37:18,271 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:37:18,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:37:18,272 INFO L85 PathProgramCache]: Analyzing trace with hash -2138740587, now seen corresponding path program 1 times [2021-12-21 15:37:18,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:37:18,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397738690] [2021-12-21 15:37:18,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:18,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:37:18,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:18,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:37:18,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:18,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:37:18,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:18,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 15:37:18,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:18,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-21 15:37:18,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:18,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:37:18,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:18,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 15:37:18,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:18,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 15:37:18,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:18,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:37:18,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:18,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 15:37:18,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:18,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 15:37:18,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:18,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:37:18,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:18,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-21 15:37:18,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:18,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-21 15:37:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:18,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 15:37:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:18,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 15:37:18,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:18,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 15:37:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:18,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-21 15:37:18,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:18,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-21 15:37:18,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:18,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 15:37:18,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:18,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-21 15:37:18,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:18,608 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-12-21 15:37:18,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:37:18,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397738690] [2021-12-21 15:37:18,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397738690] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:37:18,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538505824] [2021-12-21 15:37:18,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:18,609 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:37:18,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:37:18,612 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) [2021-12-21 15:37:18,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 15:37:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:18,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 2321 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-21 15:37:18,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:37:19,206 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-12-21 15:37:19,207 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:37:19,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538505824] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:37:19,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:37:19,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2021-12-21 15:37:19,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821281200] [2021-12-21 15:37:19,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:37:19,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 15:37:19,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:37:19,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 15:37:19,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-12-21 15:37:19,210 INFO L87 Difference]: Start difference. First operand 354 states and 496 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-21 15:37:19,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:37:19,561 INFO L93 Difference]: Finished difference Result 693 states and 993 transitions. [2021-12-21 15:37:19,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 15:37:19,562 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 132 [2021-12-21 15:37:19,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:37:19,566 INFO L225 Difference]: With dead ends: 693 [2021-12-21 15:37:19,566 INFO L226 Difference]: Without dead ends: 375 [2021-12-21 15:37:19,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-21 15:37:19,568 INFO L933 BasicCegarLoop]: 452 mSDtfsCounter, 96 mSDsluCounter, 2149 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 2601 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 15:37:19,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 2601 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 15:37:19,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-12-21 15:37:19,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 373. [2021-12-21 15:37:19,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 231 states have (on average 1.2380952380952381) internal successors, (286), 234 states have internal predecessors, (286), 115 states have call successors, (115), 24 states have call predecessors, (115), 25 states have return successors, (132), 114 states have call predecessors, (132), 113 states have call successors, (132) [2021-12-21 15:37:19,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 533 transitions. [2021-12-21 15:37:19,615 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 533 transitions. Word has length 132 [2021-12-21 15:37:19,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:37:19,617 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 533 transitions. [2021-12-21 15:37:19,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-21 15:37:19,618 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 533 transitions. [2021-12-21 15:37:19,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-21 15:37:19,625 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:37:19,625 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:37:19,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-21 15:37:19,844 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 [2021-12-21 15:37:19,845 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:37:19,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:37:19,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1048395964, now seen corresponding path program 1 times [2021-12-21 15:37:19,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:37:19,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442927116] [2021-12-21 15:37:19,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:19,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:37:19,941 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:37:19,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [733793763] [2021-12-21 15:37:19,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:19,941 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:37:19,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:37:19,942 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) [2021-12-21 15:37:19,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-21 15:37:20,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:20,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 2462 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 15:37:20,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:37:20,543 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-12-21 15:37:20,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:37:20,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:37:20,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442927116] [2021-12-21 15:37:20,544 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:37:20,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733793763] [2021-12-21 15:37:20,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733793763] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:37:20,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:37:20,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 15:37:20,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519822732] [2021-12-21 15:37:20,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:37:20,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 15:37:20,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:37:20,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 15:37:20,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 15:37:20,546 INFO L87 Difference]: Start difference. First operand 373 states and 533 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-12-21 15:37:20,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:37:20,765 INFO L93 Difference]: Finished difference Result 718 states and 1050 transitions. [2021-12-21 15:37:20,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 15:37:20,766 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 147 [2021-12-21 15:37:20,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:37:20,768 INFO L225 Difference]: With dead ends: 718 [2021-12-21 15:37:20,769 INFO L226 Difference]: Without dead ends: 381 [2021-12-21 15:37:20,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-12-21 15:37:20,771 INFO L933 BasicCegarLoop]: 439 mSDtfsCounter, 528 mSDsluCounter, 1673 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 2112 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 15:37:20,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [544 Valid, 2112 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 15:37:20,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-12-21 15:37:20,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 373. [2021-12-21 15:37:20,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 231 states have (on average 1.2380952380952381) internal successors, (286), 234 states have internal predecessors, (286), 115 states have call successors, (115), 24 states have call predecessors, (115), 25 states have return successors, (132), 114 states have call predecessors, (132), 113 states have call successors, (132) [2021-12-21 15:37:20,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 533 transitions. [2021-12-21 15:37:20,788 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 533 transitions. Word has length 147 [2021-12-21 15:37:20,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:37:20,789 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 533 transitions. [2021-12-21 15:37:20,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-12-21 15:37:20,789 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 533 transitions. [2021-12-21 15:37:20,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-21 15:37:20,790 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:37:20,791 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:37:20,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-21 15:37:21,011 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 [2021-12-21 15:37:21,011 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:37:21,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:37:21,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1514523470, now seen corresponding path program 1 times [2021-12-21 15:37:21,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:37:21,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719777630] [2021-12-21 15:37:21,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:21,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:37:21,051 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:37:21,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1277410131] [2021-12-21 15:37:21,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:21,052 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:37:21,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:37:21,053 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) [2021-12-21 15:37:21,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-21 15:37:21,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:21,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 2534 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 15:37:21,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:37:21,897 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-12-21 15:37:21,897 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:37:21,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:37:21,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719777630] [2021-12-21 15:37:21,898 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:37:21,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277410131] [2021-12-21 15:37:21,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277410131] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:37:21,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:37:21,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:37:21,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71334220] [2021-12-21 15:37:21,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:37:21,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:37:21,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:37:21,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:37:21,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:37:21,900 INFO L87 Difference]: Start difference. First operand 373 states and 533 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 5 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2021-12-21 15:37:22,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:37:22,225 INFO L93 Difference]: Finished difference Result 744 states and 1088 transitions. [2021-12-21 15:37:22,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 15:37:22,226 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 5 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) Word has length 163 [2021-12-21 15:37:22,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:37:22,229 INFO L225 Difference]: With dead ends: 744 [2021-12-21 15:37:22,229 INFO L226 Difference]: Without dead ends: 407 [2021-12-21 15:37:22,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-21 15:37:22,232 INFO L933 BasicCegarLoop]: 447 mSDtfsCounter, 117 mSDsluCounter, 2546 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 2993 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 15:37:22,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 2993 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 15:37:22,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-12-21 15:37:22,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 373. [2021-12-21 15:37:22,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 231 states have (on average 1.2380952380952381) internal successors, (286), 234 states have internal predecessors, (286), 115 states have call successors, (115), 24 states have call predecessors, (115), 25 states have return successors, (132), 114 states have call predecessors, (132), 113 states have call successors, (132) [2021-12-21 15:37:22,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 533 transitions. [2021-12-21 15:37:22,249 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 533 transitions. Word has length 163 [2021-12-21 15:37:22,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:37:22,250 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 533 transitions. [2021-12-21 15:37:22,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 5 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2021-12-21 15:37:22,250 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 533 transitions. [2021-12-21 15:37:22,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-21 15:37:22,252 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:37:22,252 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:37:22,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-21 15:37:22,472 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 [2021-12-21 15:37:22,472 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:37:22,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:37:22,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1136730081, now seen corresponding path program 1 times [2021-12-21 15:37:22,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:37:22,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667621113] [2021-12-21 15:37:22,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:22,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:37:22,517 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:37:22,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1769013356] [2021-12-21 15:37:22,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:22,518 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:37:22,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:37:22,521 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) [2021-12-21 15:37:22,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-21 15:37:23,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:23,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 2675 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 15:37:23,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:37:23,348 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-12-21 15:37:23,349 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:37:23,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:37:23,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667621113] [2021-12-21 15:37:23,350 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:37:23,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769013356] [2021-12-21 15:37:23,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769013356] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:37:23,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:37:23,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:37:23,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692675238] [2021-12-21 15:37:23,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:37:23,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:37:23,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:37:23,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:37:23,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:37:23,352 INFO L87 Difference]: Start difference. First operand 373 states and 533 transitions. Second operand has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 4 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2021-12-21 15:37:23,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:37:23,709 INFO L93 Difference]: Finished difference Result 683 states and 991 transitions. [2021-12-21 15:37:23,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 15:37:23,710 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 4 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) Word has length 178 [2021-12-21 15:37:23,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:37:23,713 INFO L225 Difference]: With dead ends: 683 [2021-12-21 15:37:23,713 INFO L226 Difference]: Without dead ends: 375 [2021-12-21 15:37:23,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-12-21 15:37:23,716 INFO L933 BasicCegarLoop]: 428 mSDtfsCounter, 545 mSDsluCounter, 2020 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 2448 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 15:37:23,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [553 Valid, 2448 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 15:37:23,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-12-21 15:37:23,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2021-12-21 15:37:23,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 232 states have (on average 1.2370689655172413) internal successors, (287), 236 states have internal predecessors, (287), 115 states have call successors, (115), 24 states have call predecessors, (115), 26 states have return successors, (138), 114 states have call predecessors, (138), 113 states have call successors, (138) [2021-12-21 15:37:23,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 540 transitions. [2021-12-21 15:37:23,733 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 540 transitions. Word has length 178 [2021-12-21 15:37:23,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:37:23,733 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 540 transitions. [2021-12-21 15:37:23,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 4 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2021-12-21 15:37:23,734 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 540 transitions. [2021-12-21 15:37:23,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-12-21 15:37:23,735 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:37:23,735 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:37:23,763 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-21 15:37:23,951 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 [2021-12-21 15:37:23,951 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:37:23,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:37:23,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1083469799, now seen corresponding path program 1 times [2021-12-21 15:37:23,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:37:23,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782241991] [2021-12-21 15:37:23,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:23,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:37:24,022 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:37:24,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [485741970] [2021-12-21 15:37:24,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:24,024 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:37:24,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:37:24,025 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) [2021-12-21 15:37:24,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-21 15:37:24,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:24,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 2866 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-21 15:37:24,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:37:24,882 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2021-12-21 15:37:24,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:37:24,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:37:24,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782241991] [2021-12-21 15:37:24,883 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:37:24,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485741970] [2021-12-21 15:37:24,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485741970] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:37:24,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:37:24,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 15:37:24,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412679567] [2021-12-21 15:37:24,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:37:24,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 15:37:24,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:37:24,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 15:37:24,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 15:37:24,886 INFO L87 Difference]: Start difference. First operand 375 states and 540 transitions. Second operand has 9 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 5 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2021-12-21 15:37:25,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:37:25,328 INFO L93 Difference]: Finished difference Result 688 states and 1006 transitions. [2021-12-21 15:37:25,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 15:37:25,328 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 5 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) Word has length 201 [2021-12-21 15:37:25,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:37:25,331 INFO L225 Difference]: With dead ends: 688 [2021-12-21 15:37:25,331 INFO L226 Difference]: Without dead ends: 378 [2021-12-21 15:37:25,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-12-21 15:37:25,333 INFO L933 BasicCegarLoop]: 422 mSDtfsCounter, 569 mSDsluCounter, 2392 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 2814 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 15:37:25,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [577 Valid, 2814 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 15:37:25,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-12-21 15:37:25,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 376. [2021-12-21 15:37:25,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 233 states have (on average 1.2360515021459229) internal successors, (288), 237 states have internal predecessors, (288), 115 states have call successors, (115), 24 states have call predecessors, (115), 26 states have return successors, (138), 114 states have call predecessors, (138), 113 states have call successors, (138) [2021-12-21 15:37:25,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 541 transitions. [2021-12-21 15:37:25,354 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 541 transitions. Word has length 201 [2021-12-21 15:37:25,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:37:25,354 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 541 transitions. [2021-12-21 15:37:25,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 5 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2021-12-21 15:37:25,355 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 541 transitions. [2021-12-21 15:37:25,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-12-21 15:37:25,356 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:37:25,357 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2021-12-21 15:37:25,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-21 15:37:25,573 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 [2021-12-21 15:37:25,573 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:37:25,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:37:25,574 INFO L85 PathProgramCache]: Analyzing trace with hash 2112387732, now seen corresponding path program 2 times [2021-12-21 15:37:25,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:37:25,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593222148] [2021-12-21 15:37:25,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:25,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:37:25,648 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:37:25,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [677696909] [2021-12-21 15:37:25,648 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 15:37:25,648 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:37:25,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:37:25,649 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) [2021-12-21 15:37:25,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-21 15:37:26,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 15:37:26,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 15:37:26,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 3079 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-21 15:37:26,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:37:27,065 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2021-12-21 15:37:27,065 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:37:27,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:37:27,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593222148] [2021-12-21 15:37:27,066 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:37:27,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677696909] [2021-12-21 15:37:27,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677696909] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:37:27,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:37:27,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-21 15:37:27,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476904540] [2021-12-21 15:37:27,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:37:27,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 15:37:27,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:37:27,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 15:37:27,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-21 15:37:27,071 INFO L87 Difference]: Start difference. First operand 376 states and 541 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 8 states have internal predecessors, (72), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2021-12-21 15:37:27,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:37:27,547 INFO L93 Difference]: Finished difference Result 680 states and 990 transitions. [2021-12-21 15:37:27,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 15:37:27,548 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 8 states have internal predecessors, (72), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) Word has length 232 [2021-12-21 15:37:27,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:37:27,551 INFO L225 Difference]: With dead ends: 680 [2021-12-21 15:37:27,551 INFO L226 Difference]: Without dead ends: 378 [2021-12-21 15:37:27,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-12-21 15:37:27,556 INFO L933 BasicCegarLoop]: 418 mSDtfsCounter, 585 mSDsluCounter, 2753 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 3171 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 15:37:27,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [589 Valid, 3171 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 15:37:27,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-12-21 15:37:27,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 378. [2021-12-21 15:37:27,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 234 states have (on average 1.235042735042735) internal successors, (289), 239 states have internal predecessors, (289), 115 states have call successors, (115), 24 states have call predecessors, (115), 27 states have return successors, (142), 114 states have call predecessors, (142), 113 states have call successors, (142) [2021-12-21 15:37:27,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 546 transitions. [2021-12-21 15:37:27,571 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 546 transitions. Word has length 232 [2021-12-21 15:37:27,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:37:27,571 INFO L470 AbstractCegarLoop]: Abstraction has 378 states and 546 transitions. [2021-12-21 15:37:27,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 8 states have internal predecessors, (72), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2021-12-21 15:37:27,571 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 546 transitions. [2021-12-21 15:37:27,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-12-21 15:37:27,573 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:37:27,574 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2021-12-21 15:37:27,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-21 15:37:27,797 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 [2021-12-21 15:37:27,797 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:37:27,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:37:27,801 INFO L85 PathProgramCache]: Analyzing trace with hash -352400544, now seen corresponding path program 1 times [2021-12-21 15:37:27,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:37:27,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390330370] [2021-12-21 15:37:27,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:27,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:37:27,859 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:37:27,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1060576028] [2021-12-21 15:37:27,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:27,874 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:37:27,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:37:27,875 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) [2021-12-21 15:37:27,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-21 15:37:28,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:28,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 2897 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 15:37:28,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:37:28,925 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 169 proven. 3 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-12-21 15:37:28,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:37:29,582 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 25 proven. 23 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2021-12-21 15:37:29,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:37:29,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390330370] [2021-12-21 15:37:29,583 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:37:29,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060576028] [2021-12-21 15:37:29,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060576028] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:37:29,583 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 15:37:29,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-12-21 15:37:29,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946676980] [2021-12-21 15:37:29,584 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 15:37:29,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-21 15:37:29,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:37:29,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-21 15:37:29,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-21 15:37:29,586 INFO L87 Difference]: Start difference. First operand 378 states and 546 transitions. Second operand has 14 states, 12 states have (on average 9.75) internal successors, (117), 12 states have internal predecessors, (117), 9 states have call successors, (44), 4 states have call predecessors, (44), 4 states have return successors, (40), 5 states have call predecessors, (40), 9 states have call successors, (40) [2021-12-21 15:37:29,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:37:29,955 INFO L93 Difference]: Finished difference Result 710 states and 1045 transitions. [2021-12-21 15:37:29,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 15:37:29,955 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 9.75) internal successors, (117), 12 states have internal predecessors, (117), 9 states have call successors, (44), 4 states have call predecessors, (44), 4 states have return successors, (40), 5 states have call predecessors, (40), 9 states have call successors, (40) Word has length 218 [2021-12-21 15:37:29,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:37:29,960 INFO L225 Difference]: With dead ends: 710 [2021-12-21 15:37:29,960 INFO L226 Difference]: Without dead ends: 397 [2021-12-21 15:37:29,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 423 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-12-21 15:37:29,963 INFO L933 BasicCegarLoop]: 465 mSDtfsCounter, 174 mSDsluCounter, 3902 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 4367 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 15:37:29,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 4367 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 15:37:29,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2021-12-21 15:37:29,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 391. [2021-12-21 15:37:29,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 246 states have (on average 1.2439024390243902) internal successors, (306), 250 states have internal predecessors, (306), 116 states have call successors, (116), 24 states have call predecessors, (116), 27 states have return successors, (143), 116 states have call predecessors, (143), 114 states have call successors, (143) [2021-12-21 15:37:29,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 565 transitions. [2021-12-21 15:37:29,984 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 565 transitions. Word has length 218 [2021-12-21 15:37:29,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:37:29,988 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 565 transitions. [2021-12-21 15:37:29,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 9.75) internal successors, (117), 12 states have internal predecessors, (117), 9 states have call successors, (44), 4 states have call predecessors, (44), 4 states have return successors, (40), 5 states have call predecessors, (40), 9 states have call successors, (40) [2021-12-21 15:37:29,988 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 565 transitions. [2021-12-21 15:37:29,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2021-12-21 15:37:29,992 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:37:29,993 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2021-12-21 15:37:30,026 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-21 15:37:30,219 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 [2021-12-21 15:37:30,219 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:37:30,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:37:30,220 INFO L85 PathProgramCache]: Analyzing trace with hash 688347363, now seen corresponding path program 2 times [2021-12-21 15:37:30,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:37:30,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672096898] [2021-12-21 15:37:30,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:30,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:37:30,279 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:37:30,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [705279920] [2021-12-21 15:37:30,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 15:37:30,280 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:37:30,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:37:30,281 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) [2021-12-21 15:37:30,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-21 15:37:30,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-21 15:37:30,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 15:37:30,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 2039 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-21 15:37:30,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:37:31,145 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2021-12-21 15:37:31,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:37:31,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:37:31,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672096898] [2021-12-21 15:37:31,146 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:37:31,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705279920] [2021-12-21 15:37:31,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705279920] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:37:31,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:37:31,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 15:37:31,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430637231] [2021-12-21 15:37:31,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:37:31,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 15:37:31,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:37:31,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 15:37:31,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-21 15:37:31,148 INFO L87 Difference]: Start difference. First operand 391 states and 565 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-21 15:37:31,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:37:31,256 INFO L93 Difference]: Finished difference Result 708 states and 1039 transitions. [2021-12-21 15:37:31,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 15:37:31,257 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 263 [2021-12-21 15:37:31,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:37:31,259 INFO L225 Difference]: With dead ends: 708 [2021-12-21 15:37:31,259 INFO L226 Difference]: Without dead ends: 391 [2021-12-21 15:37:31,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:37:31,262 INFO L933 BasicCegarLoop]: 467 mSDtfsCounter, 64 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 1345 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:37:31,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 1345 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 15:37:31,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-12-21 15:37:31,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2021-12-21 15:37:31,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 246 states have (on average 1.2357723577235773) internal successors, (304), 250 states have internal predecessors, (304), 116 states have call successors, (116), 24 states have call predecessors, (116), 27 states have return successors, (143), 116 states have call predecessors, (143), 114 states have call successors, (143) [2021-12-21 15:37:31,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 563 transitions. [2021-12-21 15:37:31,276 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 563 transitions. Word has length 263 [2021-12-21 15:37:31,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:37:31,277 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 563 transitions. [2021-12-21 15:37:31,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-21 15:37:31,277 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 563 transitions. [2021-12-21 15:37:31,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-12-21 15:37:31,279 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:37:31,279 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 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, 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] [2021-12-21 15:37:31,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-21 15:37:31,502 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 [2021-12-21 15:37:31,502 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:37:31,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:37:31,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1679261457, now seen corresponding path program 1 times [2021-12-21 15:37:31,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:37:31,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362053484] [2021-12-21 15:37:31,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:31,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:37:31,548 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:37:31,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1323022873] [2021-12-21 15:37:31,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:31,549 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:37:31,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:37:31,550 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) [2021-12-21 15:37:31,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-21 15:37:32,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:32,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 2979 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-21 15:37:32,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:37:32,433 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-12-21 15:37:32,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:37:32,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:37:32,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362053484] [2021-12-21 15:37:32,434 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:37:32,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323022873] [2021-12-21 15:37:32,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323022873] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:37:32,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:37:32,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-21 15:37:32,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583554805] [2021-12-21 15:37:32,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:37:32,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 15:37:32,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:37:32,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 15:37:32,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-21 15:37:32,437 INFO L87 Difference]: Start difference. First operand 391 states and 563 transitions. Second operand has 10 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 6 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (26), 5 states have call predecessors, (26), 6 states have call successors, (26) [2021-12-21 15:37:32,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:37:32,851 INFO L93 Difference]: Finished difference Result 733 states and 1069 transitions. [2021-12-21 15:37:32,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 15:37:32,852 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 6 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (26), 5 states have call predecessors, (26), 6 states have call successors, (26) Word has length 233 [2021-12-21 15:37:32,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:37:32,855 INFO L225 Difference]: With dead ends: 733 [2021-12-21 15:37:32,855 INFO L226 Difference]: Without dead ends: 407 [2021-12-21 15:37:32,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-12-21 15:37:32,857 INFO L933 BasicCegarLoop]: 441 mSDtfsCounter, 178 mSDsluCounter, 3312 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 3753 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 15:37:32,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 3753 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 15:37:32,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-12-21 15:37:32,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 375. [2021-12-21 15:37:32,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 232 states have (on average 1.228448275862069) internal successors, (285), 236 states have internal predecessors, (285), 115 states have call successors, (115), 24 states have call predecessors, (115), 26 states have return successors, (134), 114 states have call predecessors, (134), 113 states have call successors, (134) [2021-12-21 15:37:32,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 534 transitions. [2021-12-21 15:37:32,873 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 534 transitions. Word has length 233 [2021-12-21 15:37:32,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:37:32,873 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 534 transitions. [2021-12-21 15:37:32,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 6 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (26), 5 states have call predecessors, (26), 6 states have call successors, (26) [2021-12-21 15:37:32,873 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 534 transitions. [2021-12-21 15:37:32,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-12-21 15:37:32,875 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:37:32,875 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2021-12-21 15:37:32,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-21 15:37:33,095 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 [2021-12-21 15:37:33,095 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:37:33,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:37:33,096 INFO L85 PathProgramCache]: Analyzing trace with hash 473503328, now seen corresponding path program 2 times [2021-12-21 15:37:33,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:37:33,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804900670] [2021-12-21 15:37:33,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:33,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:37:33,217 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:37:33,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [279202066] [2021-12-21 15:37:33,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 15:37:33,218 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:37:33,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:37:33,231 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) [2021-12-21 15:37:33,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-21 15:37:34,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 15:37:34,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 15:37:34,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 3120 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-21 15:37:34,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:37:34,527 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2021-12-21 15:37:34,528 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:37:34,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:37:34,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804900670] [2021-12-21 15:37:34,528 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:37:34,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279202066] [2021-12-21 15:37:34,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279202066] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:37:34,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:37:34,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 15:37:34,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119136274] [2021-12-21 15:37:34,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:37:34,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 15:37:34,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:37:34,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 15:37:34,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 15:37:34,532 INFO L87 Difference]: Start difference. First operand 375 states and 534 transitions. Second operand has 9 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 5 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) [2021-12-21 15:37:34,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:37:34,945 INFO L93 Difference]: Finished difference Result 645 states and 922 transitions. [2021-12-21 15:37:34,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 15:37:34,946 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 5 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) Word has length 248 [2021-12-21 15:37:34,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:37:34,948 INFO L225 Difference]: With dead ends: 645 [2021-12-21 15:37:34,948 INFO L226 Difference]: Without dead ends: 380 [2021-12-21 15:37:34,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-12-21 15:37:34,950 INFO L933 BasicCegarLoop]: 428 mSDtfsCounter, 565 mSDsluCounter, 2429 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 2857 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 15:37:34,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [571 Valid, 2857 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 15:37:34,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-12-21 15:37:34,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 375. [2021-12-21 15:37:34,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 232 states have (on average 1.228448275862069) internal successors, (285), 236 states have internal predecessors, (285), 115 states have call successors, (115), 24 states have call predecessors, (115), 26 states have return successors, (132), 114 states have call predecessors, (132), 113 states have call successors, (132) [2021-12-21 15:37:34,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 532 transitions. [2021-12-21 15:37:34,965 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 532 transitions. Word has length 248 [2021-12-21 15:37:34,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:37:34,966 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 532 transitions. [2021-12-21 15:37:34,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 5 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) [2021-12-21 15:37:34,966 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 532 transitions. [2021-12-21 15:37:34,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2021-12-21 15:37:34,967 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:37:34,968 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:37:35,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-21 15:37:35,191 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 [2021-12-21 15:37:35,191 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:37:35,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:37:35,191 INFO L85 PathProgramCache]: Analyzing trace with hash -817196209, now seen corresponding path program 1 times [2021-12-21 15:37:35,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:37:35,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564545771] [2021-12-21 15:37:35,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:35,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:37:35,288 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:37:35,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [56576391] [2021-12-21 15:37:35,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:35,289 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:37:35,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:37:35,303 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) [2021-12-21 15:37:35,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-21 15:37:36,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:36,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 3242 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-21 15:37:36,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:37:36,519 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 210 proven. 3 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2021-12-21 15:37:36,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:37:37,060 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 50 proven. 9 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked. [2021-12-21 15:37:37,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:37:37,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564545771] [2021-12-21 15:37:37,060 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:37:37,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56576391] [2021-12-21 15:37:37,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56576391] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:37:37,061 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 15:37:37,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-12-21 15:37:37,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735496178] [2021-12-21 15:37:37,061 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 15:37:37,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-21 15:37:37,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:37:37,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-21 15:37:37,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-12-21 15:37:37,063 INFO L87 Difference]: Start difference. First operand 375 states and 532 transitions. Second operand has 16 states, 14 states have (on average 8.214285714285714) internal successors, (115), 14 states have internal predecessors, (115), 11 states have call successors, (49), 4 states have call predecessors, (49), 4 states have return successors, (45), 7 states have call predecessors, (45), 11 states have call successors, (45) [2021-12-21 15:37:37,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:37:37,397 INFO L93 Difference]: Finished difference Result 661 states and 946 transitions. [2021-12-21 15:37:37,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 15:37:37,397 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 8.214285714285714) internal successors, (115), 14 states have internal predecessors, (115), 11 states have call successors, (49), 4 states have call predecessors, (49), 4 states have return successors, (45), 7 states have call predecessors, (45), 11 states have call successors, (45) Word has length 272 [2021-12-21 15:37:37,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:37:37,400 INFO L225 Difference]: With dead ends: 661 [2021-12-21 15:37:37,400 INFO L226 Difference]: Without dead ends: 396 [2021-12-21 15:37:37,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 529 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2021-12-21 15:37:37,402 INFO L933 BasicCegarLoop]: 467 mSDtfsCounter, 209 mSDsluCounter, 4297 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 4764 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 15:37:37,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 4764 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 15:37:37,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-12-21 15:37:37,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 391. [2021-12-21 15:37:37,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 246 states have (on average 1.2357723577235773) internal successors, (304), 250 states have internal predecessors, (304), 116 states have call successors, (116), 24 states have call predecessors, (116), 27 states have return successors, (137), 116 states have call predecessors, (137), 114 states have call successors, (137) [2021-12-21 15:37:37,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 557 transitions. [2021-12-21 15:37:37,415 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 557 transitions. Word has length 272 [2021-12-21 15:37:37,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:37:37,415 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 557 transitions. [2021-12-21 15:37:37,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 8.214285714285714) internal successors, (115), 14 states have internal predecessors, (115), 11 states have call successors, (49), 4 states have call predecessors, (49), 4 states have return successors, (45), 7 states have call predecessors, (45), 11 states have call successors, (45) [2021-12-21 15:37:37,416 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 557 transitions. [2021-12-21 15:37:37,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-12-21 15:37:37,417 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:37:37,417 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:37:37,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-21 15:37:37,632 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 [2021-12-21 15:37:37,632 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:37:37,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:37:37,633 INFO L85 PathProgramCache]: Analyzing trace with hash 451085598, now seen corresponding path program 2 times [2021-12-21 15:37:37,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:37:37,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645300896] [2021-12-21 15:37:37,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:37,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:37:37,717 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:37:37,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [746134604] [2021-12-21 15:37:37,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 15:37:37,718 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:37:37,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:37:37,719 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) [2021-12-21 15:37:37,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-21 15:37:38,750 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 15:37:38,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 15:37:38,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 3383 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-21 15:37:38,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:37:39,309 INFO L134 CoverageAnalysis]: Checked inductivity of 557 backedges. 213 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2021-12-21 15:37:39,309 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:37:39,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:37:39,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645300896] [2021-12-21 15:37:39,309 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:37:39,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746134604] [2021-12-21 15:37:39,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746134604] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:37:39,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:37:39,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-21 15:37:39,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525618126] [2021-12-21 15:37:39,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:37:39,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-21 15:37:39,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:37:39,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-21 15:37:39,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-21 15:37:39,318 INFO L87 Difference]: Start difference. First operand 391 states and 557 transitions. Second operand has 11 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 7 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (26), 6 states have call predecessors, (26), 7 states have call successors, (26) [2021-12-21 15:37:39,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:37:39,749 INFO L93 Difference]: Finished difference Result 693 states and 992 transitions. [2021-12-21 15:37:39,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 15:37:39,750 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 7 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (26), 6 states have call predecessors, (26), 7 states have call successors, (26) Word has length 287 [2021-12-21 15:37:39,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:37:39,752 INFO L225 Difference]: With dead ends: 693 [2021-12-21 15:37:39,752 INFO L226 Difference]: Without dead ends: 412 [2021-12-21 15:37:39,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-12-21 15:37:39,758 INFO L933 BasicCegarLoop]: 443 mSDtfsCounter, 199 mSDsluCounter, 3736 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 4179 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 15:37:39,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 4179 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 15:37:39,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-12-21 15:37:39,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 375. [2021-12-21 15:37:39,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 232 states have (on average 1.228448275862069) internal successors, (285), 236 states have internal predecessors, (285), 115 states have call successors, (115), 24 states have call predecessors, (115), 26 states have return successors, (130), 114 states have call predecessors, (130), 113 states have call successors, (130) [2021-12-21 15:37:39,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 530 transitions. [2021-12-21 15:37:39,774 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 530 transitions. Word has length 287 [2021-12-21 15:37:39,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:37:39,775 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 530 transitions. [2021-12-21 15:37:39,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 7 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (26), 6 states have call predecessors, (26), 7 states have call successors, (26) [2021-12-21 15:37:39,775 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 530 transitions. [2021-12-21 15:37:39,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2021-12-21 15:37:39,776 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:37:39,777 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 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, 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] [2021-12-21 15:37:39,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-21 15:37:40,000 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 [2021-12-21 15:37:40,000 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:37:40,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:37:40,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1306212493, now seen corresponding path program 3 times [2021-12-21 15:37:40,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:37:40,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642737810] [2021-12-21 15:37:40,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:40,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:37:40,047 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:37:40,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [481136311] [2021-12-21 15:37:40,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-21 15:37:40,048 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:37:40,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:37:40,064 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) [2021-12-21 15:37:40,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-21 15:37:40,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-21 15:37:40,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 15:37:40,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 1889 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-21 15:37:40,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:37:41,046 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 562 trivial. 0 not checked. [2021-12-21 15:37:41,046 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:37:41,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:37:41,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642737810] [2021-12-21 15:37:41,046 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:37:41,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481136311] [2021-12-21 15:37:41,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481136311] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:37:41,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:37:41,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 15:37:41,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871733330] [2021-12-21 15:37:41,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:37:41,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:37:41,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:37:41,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:37:41,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:37:41,049 INFO L87 Difference]: Start difference. First operand 375 states and 530 transitions. Second operand has 6 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-21 15:37:41,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:37:41,175 INFO L93 Difference]: Finished difference Result 669 states and 964 transitions. [2021-12-21 15:37:41,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 15:37:41,176 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 302 [2021-12-21 15:37:41,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:37:41,178 INFO L225 Difference]: With dead ends: 669 [2021-12-21 15:37:41,178 INFO L226 Difference]: Without dead ends: 375 [2021-12-21 15:37:41,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-21 15:37:41,180 INFO L933 BasicCegarLoop]: 455 mSDtfsCounter, 2 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2210 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:37:41,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 2210 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 15:37:41,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-12-21 15:37:41,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2021-12-21 15:37:41,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 232 states have (on average 1.228448275862069) internal successors, (285), 236 states have internal predecessors, (285), 115 states have call successors, (115), 24 states have call predecessors, (115), 26 states have return successors, (129), 114 states have call predecessors, (129), 113 states have call successors, (129) [2021-12-21 15:37:41,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 529 transitions. [2021-12-21 15:37:41,227 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 529 transitions. Word has length 302 [2021-12-21 15:37:41,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:37:41,227 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 529 transitions. [2021-12-21 15:37:41,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-21 15:37:41,228 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 529 transitions. [2021-12-21 15:37:41,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2021-12-21 15:37:41,229 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:37:41,229 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-12-21 15:37:41,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-21 15:37:41,439 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 [2021-12-21 15:37:41,439 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:37:41,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:37:41,440 INFO L85 PathProgramCache]: Analyzing trace with hash -212707722, now seen corresponding path program 1 times [2021-12-21 15:37:41,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:37:41,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333953823] [2021-12-21 15:37:41,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:41,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:37:41,482 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:37:41,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1790007254] [2021-12-21 15:37:41,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:41,483 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:37:41,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:37:41,494 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) [2021-12-21 15:37:41,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-21 15:37:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:42,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 3323 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-21 15:37:42,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:37:43,264 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 214 proven. 3 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2021-12-21 15:37:43,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:37:43,857 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 50 proven. 28 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2021-12-21 15:37:43,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:37:43,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333953823] [2021-12-21 15:37:43,857 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:37:43,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790007254] [2021-12-21 15:37:43,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790007254] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:37:43,857 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 15:37:43,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-12-21 15:37:43,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424329533] [2021-12-21 15:37:43,858 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 15:37:43,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-21 15:37:43,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:37:43,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-21 15:37:43,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2021-12-21 15:37:43,859 INFO L87 Difference]: Start difference. First operand 375 states and 529 transitions. Second operand has 18 states, 16 states have (on average 8.1875) internal successors, (131), 14 states have internal predecessors, (131), 11 states have call successors, (46), 6 states have call predecessors, (46), 4 states have return successors, (41), 7 states have call predecessors, (41), 11 states have call successors, (41) [2021-12-21 15:37:44,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:37:44,332 INFO L93 Difference]: Finished difference Result 692 states and 986 transitions. [2021-12-21 15:37:44,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 15:37:44,332 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 8.1875) internal successors, (131), 14 states have internal predecessors, (131), 11 states have call successors, (46), 6 states have call predecessors, (46), 4 states have return successors, (41), 7 states have call predecessors, (41), 11 states have call successors, (41) Word has length 280 [2021-12-21 15:37:44,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:37:44,335 INFO L225 Difference]: With dead ends: 692 [2021-12-21 15:37:44,335 INFO L226 Difference]: Without dead ends: 391 [2021-12-21 15:37:44,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 563 GetRequests, 543 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2021-12-21 15:37:44,336 INFO L933 BasicCegarLoop]: 444 mSDtfsCounter, 229 mSDsluCounter, 6200 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 6644 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 15:37:44,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 6644 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 15:37:44,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-12-21 15:37:44,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 389. [2021-12-21 15:37:44,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 245 states have (on average 1.236734693877551) internal successors, (303), 248 states have internal predecessors, (303), 116 states have call successors, (116), 24 states have call predecessors, (116), 26 states have return successors, (130), 116 states have call predecessors, (130), 114 states have call successors, (130) [2021-12-21 15:37:44,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 549 transitions. [2021-12-21 15:37:44,380 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 549 transitions. Word has length 280 [2021-12-21 15:37:44,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:37:44,380 INFO L470 AbstractCegarLoop]: Abstraction has 389 states and 549 transitions. [2021-12-21 15:37:44,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 8.1875) internal successors, (131), 14 states have internal predecessors, (131), 11 states have call successors, (46), 6 states have call predecessors, (46), 4 states have return successors, (41), 7 states have call predecessors, (41), 11 states have call successors, (41) [2021-12-21 15:37:44,381 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 549 transitions. [2021-12-21 15:37:44,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2021-12-21 15:37:44,383 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:37:44,383 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-12-21 15:37:44,405 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-12-21 15:37:44,605 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 [2021-12-21 15:37:44,605 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:37:44,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:37:44,605 INFO L85 PathProgramCache]: Analyzing trace with hash -2012161964, now seen corresponding path program 2 times [2021-12-21 15:37:44,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:37:44,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100620743] [2021-12-21 15:37:44,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:44,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:37:44,660 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:37:44,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [261940514] [2021-12-21 15:37:44,661 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 15:37:44,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:37:44,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:37:44,662 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) [2021-12-21 15:37:44,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-21 15:37:45,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-21 15:37:45,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 15:37:45,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 1926 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-21 15:37:45,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:37:45,584 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2021-12-21 15:37:45,584 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:37:45,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:37:45,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100620743] [2021-12-21 15:37:45,585 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:37:45,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261940514] [2021-12-21 15:37:45,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261940514] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:37:45,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:37:45,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 15:37:45,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604032930] [2021-12-21 15:37:45,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:37:45,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:37:45,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:37:45,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:37:45,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:37:45,586 INFO L87 Difference]: Start difference. First operand 389 states and 549 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2021-12-21 15:37:45,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:37:45,900 INFO L93 Difference]: Finished difference Result 796 states and 1156 transitions. [2021-12-21 15:37:45,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 15:37:45,901 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 310 [2021-12-21 15:37:45,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:37:45,904 INFO L225 Difference]: With dead ends: 796 [2021-12-21 15:37:45,904 INFO L226 Difference]: Without dead ends: 443 [2021-12-21 15:37:45,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-21 15:37:45,906 INFO L933 BasicCegarLoop]: 483 mSDtfsCounter, 21 mSDsluCounter, 1766 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2249 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 15:37:45,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 2249 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 15:37:45,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-12-21 15:37:45,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 401. [2021-12-21 15:37:45,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 257 states have (on average 1.2373540856031129) internal successors, (318), 260 states have internal predecessors, (318), 116 states have call successors, (116), 24 states have call predecessors, (116), 26 states have return successors, (130), 116 states have call predecessors, (130), 114 states have call successors, (130) [2021-12-21 15:37:45,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 564 transitions. [2021-12-21 15:37:45,924 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 564 transitions. Word has length 310 [2021-12-21 15:37:45,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:37:45,924 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 564 transitions. [2021-12-21 15:37:45,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2021-12-21 15:37:45,925 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 564 transitions. [2021-12-21 15:37:45,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2021-12-21 15:37:45,926 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:37:45,927 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-12-21 15:37:45,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-12-21 15:37:46,139 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 [2021-12-21 15:37:46,140 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:37:46,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:37:46,140 INFO L85 PathProgramCache]: Analyzing trace with hash 92083096, now seen corresponding path program 1 times [2021-12-21 15:37:46,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:37:46,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231920442] [2021-12-21 15:37:46,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:46,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:37:46,198 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:37:46,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1855469813] [2021-12-21 15:37:46,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:46,199 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:37:46,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:37:46,200 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) [2021-12-21 15:37:46,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-21 15:37:46,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:46,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 3593 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 15:37:46,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:37:47,209 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 282 proven. 0 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2021-12-21 15:37:47,209 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:37:47,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:37:47,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231920442] [2021-12-21 15:37:47,210 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:37:47,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855469813] [2021-12-21 15:37:47,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855469813] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:37:47,210 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:37:47,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 15:37:47,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713344579] [2021-12-21 15:37:47,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:37:47,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 15:37:47,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:37:47,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 15:37:47,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 15:37:47,211 INFO L87 Difference]: Start difference. First operand 401 states and 564 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-21 15:37:47,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:37:47,239 INFO L93 Difference]: Finished difference Result 778 states and 1116 transitions. [2021-12-21 15:37:47,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 15:37:47,239 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 310 [2021-12-21 15:37:47,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:37:47,242 INFO L225 Difference]: With dead ends: 778 [2021-12-21 15:37:47,242 INFO L226 Difference]: Without dead ends: 413 [2021-12-21 15:37:47,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 15:37:47,244 INFO L933 BasicCegarLoop]: 482 mSDtfsCounter, 3 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1441 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 [2021-12-21 15:37:47,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 1441 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 15:37:47,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2021-12-21 15:37:47,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 407. [2021-12-21 15:37:47,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 263 states have (on average 1.231939163498099) internal successors, (324), 266 states have internal predecessors, (324), 116 states have call successors, (116), 24 states have call predecessors, (116), 26 states have return successors, (130), 116 states have call predecessors, (130), 114 states have call successors, (130) [2021-12-21 15:37:47,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 570 transitions. [2021-12-21 15:37:47,258 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 570 transitions. Word has length 310 [2021-12-21 15:37:47,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:37:47,258 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 570 transitions. [2021-12-21 15:37:47,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-21 15:37:47,258 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 570 transitions. [2021-12-21 15:37:47,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2021-12-21 15:37:47,260 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:37:47,260 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-12-21 15:37:47,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-12-21 15:37:47,475 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 [2021-12-21 15:37:47,475 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:37:47,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:37:47,476 INFO L85 PathProgramCache]: Analyzing trace with hash -641737782, now seen corresponding path program 1 times [2021-12-21 15:37:47,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:37:47,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515382262] [2021-12-21 15:37:47,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:47,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:37:47,533 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:37:47,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [369109373] [2021-12-21 15:37:47,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:47,534 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:37:47,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:37:47,535 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) [2021-12-21 15:37:47,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-21 15:37:48,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:48,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 3855 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-21 15:37:48,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:37:48,733 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 523 trivial. 0 not checked. [2021-12-21 15:37:48,733 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:37:48,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:37:48,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515382262] [2021-12-21 15:37:48,734 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:37:48,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369109373] [2021-12-21 15:37:48,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369109373] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:37:48,734 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:37:48,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 15:37:48,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060474108] [2021-12-21 15:37:48,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:37:48,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:37:48,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:37:48,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:37:48,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:37:48,736 INFO L87 Difference]: Start difference. First operand 407 states and 570 transitions. Second operand has 6 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 4 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-12-21 15:37:48,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:37:48,851 INFO L93 Difference]: Finished difference Result 754 states and 1067 transitions. [2021-12-21 15:37:48,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 15:37:48,851 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 4 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 340 [2021-12-21 15:37:48,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:37:48,854 INFO L225 Difference]: With dead ends: 754 [2021-12-21 15:37:48,854 INFO L226 Difference]: Without dead ends: 449 [2021-12-21 15:37:48,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:37:48,856 INFO L933 BasicCegarLoop]: 532 mSDtfsCounter, 82 mSDsluCounter, 2000 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 2532 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:37:48,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 2532 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 15:37:48,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2021-12-21 15:37:48,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 410. [2021-12-21 15:37:48,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 266 states have (on average 1.2293233082706767) internal successors, (327), 269 states have internal predecessors, (327), 116 states have call successors, (116), 24 states have call predecessors, (116), 26 states have return successors, (130), 116 states have call predecessors, (130), 114 states have call successors, (130) [2021-12-21 15:37:48,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 573 transitions. [2021-12-21 15:37:48,877 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 573 transitions. Word has length 340 [2021-12-21 15:37:48,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:37:48,878 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 573 transitions. [2021-12-21 15:37:48,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 4 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-12-21 15:37:48,878 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 573 transitions. [2021-12-21 15:37:48,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2021-12-21 15:37:48,879 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:37:48,880 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:37:48,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-12-21 15:37:49,103 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 [2021-12-21 15:37:49,103 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:37:49,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:37:49,104 INFO L85 PathProgramCache]: Analyzing trace with hash 828564891, now seen corresponding path program 1 times [2021-12-21 15:37:49,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:37:49,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729854109] [2021-12-21 15:37:49,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:49,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:37:49,208 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:37:49,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [985955557] [2021-12-21 15:37:49,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:49,209 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:37:49,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:37:49,210 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) [2021-12-21 15:37:49,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-12-21 15:37:49,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:49,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 3774 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-21 15:37:49,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:37:50,388 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked. [2021-12-21 15:37:50,388 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:37:50,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:37:50,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729854109] [2021-12-21 15:37:50,388 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:37:50,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985955557] [2021-12-21 15:37:50,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985955557] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:37:50,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:37:50,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-21 15:37:50,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522416427] [2021-12-21 15:37:50,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:37:50,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-21 15:37:50,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:37:50,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-21 15:37:50,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-21 15:37:50,390 INFO L87 Difference]: Start difference. First operand 410 states and 573 transitions. Second operand has 11 states, 10 states have (on average 9.5) internal successors, (95), 8 states have internal predecessors, (95), 6 states have call successors, (34), 5 states have call predecessors, (34), 3 states have return successors, (29), 5 states have call predecessors, (29), 6 states have call successors, (29) [2021-12-21 15:37:50,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:37:50,660 INFO L93 Difference]: Finished difference Result 755 states and 1068 transitions. [2021-12-21 15:37:50,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 15:37:50,661 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 9.5) internal successors, (95), 8 states have internal predecessors, (95), 6 states have call successors, (34), 5 states have call predecessors, (34), 3 states have return successors, (29), 5 states have call predecessors, (29), 6 states have call successors, (29) Word has length 339 [2021-12-21 15:37:50,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:37:50,665 INFO L225 Difference]: With dead ends: 755 [2021-12-21 15:37:50,665 INFO L226 Difference]: Without dead ends: 427 [2021-12-21 15:37:50,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-12-21 15:37:50,667 INFO L933 BasicCegarLoop]: 456 mSDtfsCounter, 160 mSDsluCounter, 3861 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 4317 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 15:37:50,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 4317 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 15:37:50,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2021-12-21 15:37:50,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2021-12-21 15:37:50,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 273 states have (on average 1.2271062271062272) internal successors, (335), 276 states have internal predecessors, (335), 125 states have call successors, (125), 25 states have call predecessors, (125), 27 states have return successors, (139), 125 states have call predecessors, (139), 123 states have call successors, (139) [2021-12-21 15:37:50,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 599 transitions. [2021-12-21 15:37:50,684 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 599 transitions. Word has length 339 [2021-12-21 15:37:50,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:37:50,685 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 599 transitions. [2021-12-21 15:37:50,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 9.5) internal successors, (95), 8 states have internal predecessors, (95), 6 states have call successors, (34), 5 states have call predecessors, (34), 3 states have return successors, (29), 5 states have call predecessors, (29), 6 states have call successors, (29) [2021-12-21 15:37:50,685 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 599 transitions. [2021-12-21 15:37:50,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2021-12-21 15:37:50,687 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:37:50,688 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:37:50,720 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-12-21 15:37:50,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-12-21 15:37:50,903 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:37:50,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:37:50,904 INFO L85 PathProgramCache]: Analyzing trace with hash 599052898, now seen corresponding path program 1 times [2021-12-21 15:37:50,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:37:50,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371034480] [2021-12-21 15:37:50,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:50,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:37:51,004 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:37:51,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1662632451] [2021-12-21 15:37:51,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:51,005 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:37:51,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:37:51,006 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:37:51,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-12-21 15:37:51,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:51,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 3641 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-21 15:37:51,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:37:52,304 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 701 trivial. 0 not checked. [2021-12-21 15:37:52,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:37:52,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:37:52,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371034480] [2021-12-21 15:37:52,305 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:37:52,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662632451] [2021-12-21 15:37:52,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662632451] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:37:52,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:37:52,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-21 15:37:52,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114906367] [2021-12-21 15:37:52,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:37:52,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 15:37:52,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:37:52,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 15:37:52,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-21 15:37:52,306 INFO L87 Difference]: Start difference. First operand 427 states and 599 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 8 states have internal predecessors, (72), 6 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (24), 6 states have call predecessors, (24), 5 states have call successors, (24) [2021-12-21 15:37:52,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:37:52,551 INFO L93 Difference]: Finished difference Result 736 states and 1036 transitions. [2021-12-21 15:37:52,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 15:37:52,554 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 8 states have internal predecessors, (72), 6 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (24), 6 states have call predecessors, (24), 5 states have call successors, (24) Word has length 317 [2021-12-21 15:37:52,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:37:52,556 INFO L225 Difference]: With dead ends: 736 [2021-12-21 15:37:52,557 INFO L226 Difference]: Without dead ends: 444 [2021-12-21 15:37:52,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-12-21 15:37:52,558 INFO L933 BasicCegarLoop]: 456 mSDtfsCounter, 127 mSDsluCounter, 3456 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 3912 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 15:37:52,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 3912 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 15:37:52,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-12-21 15:37:52,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 439. [2021-12-21 15:37:52,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 279 states have (on average 1.2258064516129032) internal successors, (342), 282 states have internal predecessors, (342), 130 states have call successors, (130), 26 states have call predecessors, (130), 28 states have return successors, (144), 130 states have call predecessors, (144), 128 states have call successors, (144) [2021-12-21 15:37:52,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 616 transitions. [2021-12-21 15:37:52,576 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 616 transitions. Word has length 317 [2021-12-21 15:37:52,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:37:52,576 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 616 transitions. [2021-12-21 15:37:52,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 8 states have internal predecessors, (72), 6 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (24), 6 states have call predecessors, (24), 5 states have call successors, (24) [2021-12-21 15:37:52,577 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 616 transitions. [2021-12-21 15:37:52,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2021-12-21 15:37:52,578 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:37:52,579 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:37:52,602 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-12-21 15:37:52,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-12-21 15:37:52,791 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:37:52,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:37:52,792 INFO L85 PathProgramCache]: Analyzing trace with hash 2117085201, now seen corresponding path program 1 times [2021-12-21 15:37:52,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:37:52,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505385649] [2021-12-21 15:37:52,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:52,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:37:52,839 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:37:52,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [733449484] [2021-12-21 15:37:52,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:52,840 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:37:52,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:37:52,841 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:37:52,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-12-21 15:37:53,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:53,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 3782 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-21 15:37:53,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:37:54,034 INFO L387 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 [2021-12-21 15:37:54,337 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 357 proven. 0 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2021-12-21 15:37:54,337 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:37:54,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:37:54,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505385649] [2021-12-21 15:37:54,338 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:37:54,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733449484] [2021-12-21 15:37:54,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733449484] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:37:54,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:37:54,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-21 15:37:54,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882659783] [2021-12-21 15:37:54,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:37:54,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 15:37:54,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:37:54,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 15:37:54,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-21 15:37:54,339 INFO L87 Difference]: Start difference. First operand 439 states and 616 transitions. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 6 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (29), 6 states have call predecessors, (29), 6 states have call successors, (29) [2021-12-21 15:37:54,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:37:54,896 INFO L93 Difference]: Finished difference Result 891 states and 1292 transitions. [2021-12-21 15:37:54,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 15:37:54,897 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 6 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (29), 6 states have call predecessors, (29), 6 states have call successors, (29) Word has length 332 [2021-12-21 15:37:54,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:37:54,899 INFO L225 Difference]: With dead ends: 891 [2021-12-21 15:37:54,899 INFO L226 Difference]: Without dead ends: 484 [2021-12-21 15:37:54,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-12-21 15:37:54,901 INFO L933 BasicCegarLoop]: 462 mSDtfsCounter, 102 mSDsluCounter, 3394 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 3856 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 15:37:54,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 3856 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 15:37:54,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2021-12-21 15:37:54,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 462. [2021-12-21 15:37:54,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 301 states have (on average 1.2292358803986712) internal successors, (370), 303 states have internal predecessors, (370), 130 states have call successors, (130), 26 states have call predecessors, (130), 29 states have return successors, (160), 132 states have call predecessors, (160), 128 states have call successors, (160) [2021-12-21 15:37:54,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 660 transitions. [2021-12-21 15:37:54,917 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 660 transitions. Word has length 332 [2021-12-21 15:37:54,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:37:54,918 INFO L470 AbstractCegarLoop]: Abstraction has 462 states and 660 transitions. [2021-12-21 15:37:54,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 6 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (29), 6 states have call predecessors, (29), 6 states have call successors, (29) [2021-12-21 15:37:54,918 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 660 transitions. [2021-12-21 15:37:54,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2021-12-21 15:37:54,920 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:37:54,920 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:37:54,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-12-21 15:37:55,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:37:55,135 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:37:55,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:37:55,136 INFO L85 PathProgramCache]: Analyzing trace with hash -201858609, now seen corresponding path program 1 times [2021-12-21 15:37:55,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:37:55,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769784174] [2021-12-21 15:37:55,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:55,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:37:55,186 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:37:55,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [903498272] [2021-12-21 15:37:55,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:55,187 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:37:55,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:37:55,193 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:37:55,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-12-21 15:37:55,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:55,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 3791 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-21 15:37:55,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:37:56,472 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 356 proven. 0 refuted. 0 times theorem prover too weak. 471 trivial. 0 not checked. [2021-12-21 15:37:56,472 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:37:56,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:37:56,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769784174] [2021-12-21 15:37:56,472 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:37:56,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903498272] [2021-12-21 15:37:56,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903498272] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:37:56,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:37:56,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 15:37:56,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282432985] [2021-12-21 15:37:56,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:37:56,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 15:37:56,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:37:56,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 15:37:56,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 15:37:56,477 INFO L87 Difference]: Start difference. First operand 462 states and 660 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-21 15:37:56,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:37:56,553 INFO L93 Difference]: Finished difference Result 934 states and 1364 transitions. [2021-12-21 15:37:56,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 15:37:56,554 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 332 [2021-12-21 15:37:56,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:37:56,560 INFO L225 Difference]: With dead ends: 934 [2021-12-21 15:37:56,575 INFO L226 Difference]: Without dead ends: 508 [2021-12-21 15:37:56,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:37:56,579 INFO L933 BasicCegarLoop]: 504 mSDtfsCounter, 8 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1990 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 [2021-12-21 15:37:56,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 1990 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 15:37:56,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2021-12-21 15:37:56,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 490. [2021-12-21 15:37:56,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 329 states have (on average 1.2279635258358663) internal successors, (404), 331 states have internal predecessors, (404), 130 states have call successors, (130), 26 states have call predecessors, (130), 29 states have return successors, (160), 132 states have call predecessors, (160), 128 states have call successors, (160) [2021-12-21 15:37:56,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 694 transitions. [2021-12-21 15:37:56,625 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 694 transitions. Word has length 332 [2021-12-21 15:37:56,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:37:56,626 INFO L470 AbstractCegarLoop]: Abstraction has 490 states and 694 transitions. [2021-12-21 15:37:56,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-21 15:37:56,626 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 694 transitions. [2021-12-21 15:37:56,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2021-12-21 15:37:56,628 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:37:56,628 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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] [2021-12-21 15:37:56,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-12-21 15:37:56,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:37:56,847 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:37:56,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:37:56,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1588982095, now seen corresponding path program 1 times [2021-12-21 15:37:56,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:37:56,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654404898] [2021-12-21 15:37:56,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:56,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:37:56,922 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:37:56,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2036516122] [2021-12-21 15:37:56,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:56,923 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:37:56,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:37:56,930 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:37:56,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-12-21 15:37:57,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:57,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 3777 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 15:37:57,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:37:58,372 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 344 proven. 0 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2021-12-21 15:37:58,372 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:37:58,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:37:58,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654404898] [2021-12-21 15:37:58,372 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:37:58,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036516122] [2021-12-21 15:37:58,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036516122] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:37:58,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:37:58,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 15:37:58,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47143026] [2021-12-21 15:37:58,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:37:58,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 15:37:58,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:37:58,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 15:37:58,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 15:37:58,374 INFO L87 Difference]: Start difference. First operand 490 states and 694 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-21 15:37:58,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:37:58,405 INFO L93 Difference]: Finished difference Result 933 states and 1344 transitions. [2021-12-21 15:37:58,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 15:37:58,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 332 [2021-12-21 15:37:58,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:37:58,425 INFO L225 Difference]: With dead ends: 933 [2021-12-21 15:37:58,425 INFO L226 Difference]: Without dead ends: 479 [2021-12-21 15:37:58,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 15:37:58,428 INFO L933 BasicCegarLoop]: 485 mSDtfsCounter, 2 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1444 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 15:37:58,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1444 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 15:37:58,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2021-12-21 15:37:58,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 470. [2021-12-21 15:37:58,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 309 states have (on average 1.2071197411003236) internal successors, (373), 311 states have internal predecessors, (373), 130 states have call successors, (130), 26 states have call predecessors, (130), 29 states have return successors, (160), 132 states have call predecessors, (160), 128 states have call successors, (160) [2021-12-21 15:37:58,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 663 transitions. [2021-12-21 15:37:58,466 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 663 transitions. Word has length 332 [2021-12-21 15:37:58,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:37:58,466 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 663 transitions. [2021-12-21 15:37:58,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-21 15:37:58,467 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 663 transitions. [2021-12-21 15:37:58,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2021-12-21 15:37:58,468 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:37:58,469 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:37:58,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-12-21 15:37:58,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-12-21 15:37:58,687 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:37:58,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:37:58,688 INFO L85 PathProgramCache]: Analyzing trace with hash -12708465, now seen corresponding path program 1 times [2021-12-21 15:37:58,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:37:58,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924555133] [2021-12-21 15:37:58,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:58,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:37:58,806 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:37:58,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [839780673] [2021-12-21 15:37:58,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:37:58,807 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:37:58,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:37:58,808 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:37:58,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-12-21 15:37:59,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:37:59,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 3767 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 15:37:59,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:38:00,135 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 323 proven. 0 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2021-12-21 15:38:00,135 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:38:00,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:38:00,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924555133] [2021-12-21 15:38:00,135 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:38:00,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839780673] [2021-12-21 15:38:00,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839780673] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:38:00,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:38:00,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 15:38:00,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481211495] [2021-12-21 15:38:00,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:38:00,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 15:38:00,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:38:00,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 15:38:00,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 15:38:00,137 INFO L87 Difference]: Start difference. First operand 470 states and 663 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-21 15:38:00,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:38:00,180 INFO L93 Difference]: Finished difference Result 904 states and 1325 transitions. [2021-12-21 15:38:00,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 15:38:00,181 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 332 [2021-12-21 15:38:00,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:38:00,184 INFO L225 Difference]: With dead ends: 904 [2021-12-21 15:38:00,184 INFO L226 Difference]: Without dead ends: 470 [2021-12-21 15:38:00,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 15:38:00,189 INFO L933 BasicCegarLoop]: 489 mSDtfsCounter, 7 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1447 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 [2021-12-21 15:38:00,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1447 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 15:38:00,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2021-12-21 15:38:00,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 470. [2021-12-21 15:38:00,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 309 states have (on average 1.203883495145631) internal successors, (372), 311 states have internal predecessors, (372), 130 states have call successors, (130), 26 states have call predecessors, (130), 29 states have return successors, (160), 132 states have call predecessors, (160), 128 states have call successors, (160) [2021-12-21 15:38:00,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 662 transitions. [2021-12-21 15:38:00,284 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 662 transitions. Word has length 332 [2021-12-21 15:38:00,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:38:00,284 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 662 transitions. [2021-12-21 15:38:00,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-21 15:38:00,284 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 662 transitions. [2021-12-21 15:38:00,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2021-12-21 15:38:00,287 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:38:00,287 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:38:00,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-12-21 15:38:00,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-21 15:38:00,507 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:38:00,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:38:00,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1623540425, now seen corresponding path program 1 times [2021-12-21 15:38:00,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:38:00,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533724060] [2021-12-21 15:38:00,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:38:00,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:38:00,610 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:38:00,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [996297150] [2021-12-21 15:38:00,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:38:00,610 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:38:00,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:38:00,613 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:38:00,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-12-21 15:38:01,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:38:01,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 3782 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 15:38:01,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:38:02,000 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 326 proven. 0 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2021-12-21 15:38:02,000 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:38:02,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:38:02,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533724060] [2021-12-21 15:38:02,000 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:38:02,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996297150] [2021-12-21 15:38:02,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996297150] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:38:02,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:38:02,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 15:38:02,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278236500] [2021-12-21 15:38:02,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:38:02,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 15:38:02,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:38:02,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 15:38:02,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 15:38:02,002 INFO L87 Difference]: Start difference. First operand 470 states and 662 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-21 15:38:02,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:38:02,266 INFO L93 Difference]: Finished difference Result 904 states and 1323 transitions. [2021-12-21 15:38:02,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 15:38:02,267 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 338 [2021-12-21 15:38:02,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:38:02,270 INFO L225 Difference]: With dead ends: 904 [2021-12-21 15:38:02,270 INFO L226 Difference]: Without dead ends: 470 [2021-12-21 15:38:02,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-21 15:38:02,273 INFO L933 BasicCegarLoop]: 495 mSDtfsCounter, 7 mSDsluCounter, 1365 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1860 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 15:38:02,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1860 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 15:38:02,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2021-12-21 15:38:02,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 470. [2021-12-21 15:38:02,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 309 states have (on average 1.2006472491909386) internal successors, (371), 311 states have internal predecessors, (371), 130 states have call successors, (130), 26 states have call predecessors, (130), 29 states have return successors, (160), 132 states have call predecessors, (160), 128 states have call successors, (160) [2021-12-21 15:38:02,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 661 transitions. [2021-12-21 15:38:02,309 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 661 transitions. Word has length 338 [2021-12-21 15:38:02,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:38:02,310 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 661 transitions. [2021-12-21 15:38:02,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-21 15:38:02,310 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 661 transitions. [2021-12-21 15:38:02,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2021-12-21 15:38:02,312 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:38:02,312 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:38:02,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-12-21 15:38:02,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-21 15:38:02,528 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:38:02,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:38:02,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1177846795, now seen corresponding path program 1 times [2021-12-21 15:38:02,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:38:02,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708206100] [2021-12-21 15:38:02,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:38:02,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:38:02,630 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:38:02,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [280184446] [2021-12-21 15:38:02,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:38:02,631 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:38:02,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:38:02,643 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:38:02,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-12-21 15:38:03,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:38:03,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 3797 conjuncts, 102 conjunts are in the unsatisfiable core [2021-12-21 15:38:03,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:38:04,775 INFO L387 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 [2021-12-21 15:38:04,777 INFO L387 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 [2021-12-21 15:38:05,083 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 425 proven. 0 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2021-12-21 15:38:05,083 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:38:05,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:38:05,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708206100] [2021-12-21 15:38:05,083 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 15:38:05,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280184446] [2021-12-21 15:38:05,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280184446] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:38:05,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:38:05,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-12-21 15:38:05,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420928254] [2021-12-21 15:38:05,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:38:05,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-21 15:38:05,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:38:05,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-21 15:38:05,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-12-21 15:38:05,085 INFO L87 Difference]: Start difference. First operand 470 states and 661 transitions. Second operand has 17 states, 17 states have (on average 7.0588235294117645) internal successors, (120), 16 states have internal predecessors, (120), 7 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) [2021-12-21 15:38:05,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:38:05,974 INFO L93 Difference]: Finished difference Result 959 states and 1366 transitions. [2021-12-21 15:38:05,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-21 15:38:05,975 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 7.0588235294117645) internal successors, (120), 16 states have internal predecessors, (120), 7 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) Word has length 338 [2021-12-21 15:38:05,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:38:05,980 INFO L225 Difference]: With dead ends: 959 [2021-12-21 15:38:05,980 INFO L226 Difference]: Without dead ends: 551 [2021-12-21 15:38:05,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 320 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=115, Invalid=641, Unknown=0, NotChecked=0, Total=756 [2021-12-21 15:38:05,983 INFO L933 BasicCegarLoop]: 447 mSDtfsCounter, 117 mSDsluCounter, 4992 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 5439 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-21 15:38:05,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 5439 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 825 Invalid, 0 Unknown, 82 Unchecked, 0.6s Time] [2021-12-21 15:38:05,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2021-12-21 15:38:06,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 503. [2021-12-21 15:38:06,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 336 states have (on average 1.193452380952381) internal successors, (401), 338 states have internal predecessors, (401), 133 states have call successors, (133), 27 states have call predecessors, (133), 32 states have return successors, (189), 137 states have call predecessors, (189), 131 states have call successors, (189) [2021-12-21 15:38:06,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 723 transitions. [2021-12-21 15:38:06,024 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 723 transitions. Word has length 338 [2021-12-21 15:38:06,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:38:06,025 INFO L470 AbstractCegarLoop]: Abstraction has 503 states and 723 transitions. [2021-12-21 15:38:06,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.0588235294117645) internal successors, (120), 16 states have internal predecessors, (120), 7 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) [2021-12-21 15:38:06,025 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 723 transitions. [2021-12-21 15:38:06,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2021-12-21 15:38:06,027 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:38:06,027 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:38:06,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-12-21 15:38:06,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-21 15:38:06,247 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:38:06,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:38:06,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1243371206, now seen corresponding path program 1 times [2021-12-21 15:38:06,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:38:06,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490288251] [2021-12-21 15:38:06,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:38:06,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:38:06,303 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 15:38:06,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [591659291] [2021-12-21 15:38:06,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:38:06,303 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:38:06,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:38:06,304 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:38:06,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-12-21 15:38:07,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:38:07,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 3799 conjuncts, 255 conjunts are in the unsatisfiable core [2021-12-21 15:38:07,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:38:07,555 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_5171 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5171) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_5172 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5172))))) is different from true [2021-12-21 15:38:07,580 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5172 (Array Int Int)) (v_ArrVal_5171 (Array Int Int))) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5171) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5172)))) is different from true [2021-12-21 15:38:07,635 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-21 15:38:07,636 INFO L387 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 16 treesize of output 22 [2021-12-21 15:38:07,643 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-21 15:38:07,644 INFO L387 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 16 treesize of output 22 [2021-12-21 15:38:07,659 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 7 treesize of output 3 [2021-12-21 15:38:07,660 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 7 treesize of output 3 [2021-12-21 15:38:07,823 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_5174 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5174))) (exists ((v_ArrVal_5173 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5173) |c_#memory_$Pointer$.base|)))) is different from true [2021-12-21 15:38:08,295 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_5176 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5176) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_5175 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5175))))) is different from true [2021-12-21 15:38:08,320 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5176 (Array Int Int)) (v_ArrVal_5175 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5175)) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5176) |c_#memory_$Pointer$.offset|))) is different from true [2021-12-21 15:38:08,422 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_94| Int) (v_ArrVal_5176 (Array Int Int)) (v_ArrVal_5175 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5174 (Array Int Int)) (v_ArrVal_5173 (Array Int Int))) (let ((.cse1 (+ 40 |c_aws_priority_queue_is_valid_#in~queue#1.offset|)) (.cse2 (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5173)) (.cse0 (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5174))) (and (= (select (select .cse0 |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse1) 0) (= (select (select .cse2 |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse1) 0) (= |c_#memory_$Pointer$.base| (store .cse2 |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_94| v_ArrVal_5175)) (= |c_#memory_$Pointer$.offset| (store .cse0 |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_94| v_ArrVal_5176))))) is different from true [2021-12-21 15:38:08,962 INFO L353 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2021-12-21 15:38:08,963 INFO L387 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 2 case distinctions, treesize of input 36 treesize of output 51 [2021-12-21 15:38:08,990 INFO L353 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2021-12-21 15:38:08,990 INFO L387 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 2 case distinctions, treesize of input 36 treesize of output 51 [2021-12-21 15:38:09,036 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 7 treesize of output 3 [2021-12-21 15:38:09,054 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 7 treesize of output 3 [2021-12-21 15:38:09,067 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 7 treesize of output 3 [2021-12-21 15:38:09,203 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_5177 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5177))) (exists ((v_ArrVal_5178 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5178))))) is different from true [2021-12-21 15:38:09,490 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int)) (and (exists ((v_ArrVal_5179 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5179))) (exists ((v_ArrVal_5180 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| v_ArrVal_5180)) |c_#memory_$Pointer$.base|)))) is different from true [2021-12-21 15:38:09,518 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5180 Int) (v_ArrVal_5179 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| v_ArrVal_5180)) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5179)))) is different from true [2021-12-21 15:38:09,634 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_95| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_5180 Int) (v_ArrVal_5179 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int) (v_ArrVal_5174 (Array Int Int)) (v_ArrVal_5173 (Array Int Int))) (let ((.cse0 (store |c_old(#memory_$Pointer$.offset)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_95| v_ArrVal_5174)) (.cse1 (+ 40 |c_aws_priority_queue_is_valid_#in~queue#1.offset|)) (.cse2 (store |c_old(#memory_$Pointer$.base)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_95| v_ArrVal_5173))) (and (= (select (select .cse0 |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse1) 0) (= |c_#memory_$Pointer$.offset| (store .cse0 |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5179)) (= (select (select .cse2 |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse1) 0) (= |c_#memory_$Pointer$.base| (store .cse2 |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select .cse2 |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| v_ArrVal_5180)))))) is different from true [2021-12-21 15:38:10,308 INFO L353 Elim1Store]: treesize reduction 78, result has 39.5 percent of original size [2021-12-21 15:38:10,308 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 63 treesize of output 107 [2021-12-21 15:38:10,338 INFO L353 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2021-12-21 15:38:10,338 INFO L387 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 2 case distinctions, treesize of input 36 treesize of output 51 [2021-12-21 15:38:10,359 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 7 treesize of output 3 [2021-12-21 15:38:10,396 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 7 treesize of output 3 [2021-12-21 15:38:10,778 INFO L387 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 8 treesize of output 7 [2021-12-21 15:38:10,810 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 15:38:10,811 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 36 [2021-12-21 15:38:10,994 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 15:38:10,995 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2021-12-21 15:38:11,001 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2021-12-21 15:38:11,137 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-12-21 15:38:11,197 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-21 15:38:11,361 INFO L353 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-12-21 15:38:11,361 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2021-12-21 15:38:13,846 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5185 Int) (v_ArrVal_5184 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5184)) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_5185))))) is different from true