./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 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_push_ref_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 00eefb20b1e97d60d3c6a842acdb225be14d327e18edfa8146d29fe131145042 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-16 21:40:32,509 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-16 21:40:32,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-16 21:40:32,549 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-16 21:40:32,561 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-16 21:40:32,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-16 21:40:32,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-16 21:40:32,564 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-16 21:40:32,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-16 21:40:32,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-16 21:40:32,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-16 21:40:32,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-16 21:40:32,570 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-16 21:40:32,572 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-16 21:40:32,573 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-16 21:40:32,575 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-16 21:40:32,577 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-16 21:40:32,580 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-16 21:40:32,582 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-16 21:40:32,583 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-16 21:40:32,585 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-16 21:40:32,588 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-16 21:40:32,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-16 21:40:32,589 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-16 21:40:32,591 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-16 21:40:32,591 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-16 21:40:32,591 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-16 21:40:32,592 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-16 21:40:32,592 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-16 21:40:32,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-16 21:40:32,593 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-16 21:40:32,593 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-16 21:40:32,594 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-16 21:40:32,594 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-16 21:40:32,595 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-16 21:40:32,595 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-16 21:40:32,596 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-16 21:40:32,596 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-16 21:40:32,596 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-16 21:40:32,597 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-16 21:40:32,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-16 21:40:32,603 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-16 21:40:32,619 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-16 21:40:32,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-16 21:40:32,620 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-16 21:40:32,620 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-16 21:40:32,621 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-16 21:40:32,621 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-16 21:40:32,621 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-16 21:40:32,621 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-16 21:40:32,622 INFO L138 SettingsManager]: * Use SBE=true [2021-11-16 21:40:32,622 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-16 21:40:32,622 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-16 21:40:32,622 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-16 21:40:32,622 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-16 21:40:32,623 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-16 21:40:32,623 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-16 21:40:32,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-16 21:40:32,623 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-16 21:40:32,627 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-16 21:40:32,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-16 21:40:32,627 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-16 21:40:32,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-16 21:40:32,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-16 21:40:32,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-16 21:40:32,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-16 21:40:32,628 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-16 21:40:32,629 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-16 21:40:32,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-16 21:40:32,629 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-16 21:40:32,629 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-16 21:40:32,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-16 21:40:32,630 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-16 21:40:32,630 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00eefb20b1e97d60d3c6a842acdb225be14d327e18edfa8146d29fe131145042 [2021-11-16 21:40:32,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-16 21:40:32,855 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-16 21:40:32,858 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-16 21:40:32,859 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-16 21:40:32,860 INFO L275 PluginConnector]: CDTParser initialized [2021-11-16 21:40:32,861 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i [2021-11-16 21:40:32,912 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/099f4d8a6/46f9abd4df2d4987831f946439339f05/FLAG37a3a536c [2021-11-16 21:40:33,391 INFO L306 CDTParser]: Found 1 translation units. [2021-11-16 21:40:33,394 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i [2021-11-16 21:40:33,433 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/099f4d8a6/46f9abd4df2d4987831f946439339f05/FLAG37a3a536c [2021-11-16 21:40:33,646 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/099f4d8a6/46f9abd4df2d4987831f946439339f05 [2021-11-16 21:40:33,648 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-16 21:40:33,649 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-16 21:40:33,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-16 21:40:33,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-16 21:40:33,655 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-16 21:40:33,656 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:40:33" (1/1) ... [2021-11-16 21:40:33,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fc71183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:40:33, skipping insertion in model container [2021-11-16 21:40:33,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:40:33" (1/1) ... [2021-11-16 21:40:33,662 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-16 21:40:33,739 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-16 21:40:33,916 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_push_ref_harness.i[4501,4514] [2021-11-16 21:40:33,926 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_push_ref_harness.i[4561,4574] [2021-11-16 21:40:33,939 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-16 21:40:33,944 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-16 21:40:34,415 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,415 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,416 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,416 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,417 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,425 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,431 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,433 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,433 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,434 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,435 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,435 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,436 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,655 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-16 21:40:34,656 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-16 21:40:34,656 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-16 21:40:34,657 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-16 21:40:34,657 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-16 21:40:34,658 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-16 21:40:34,658 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-16 21:40:34,658 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-16 21:40:34,659 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-16 21:40:34,659 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-16 21:40:34,755 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-16 21:40:34,769 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,777 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,827 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,828 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,828 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,828 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,830 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,831 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,831 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,831 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,832 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,832 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,832 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,833 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,833 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,835 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,835 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,836 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,836 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,842 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,842 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,852 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,852 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,853 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,863 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-16 21:40:34,892 INFO L203 MainTranslator]: Completed pre-run [2021-11-16 21:40:34,914 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_push_ref_harness.i[4501,4514] [2021-11-16 21:40:34,915 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_push_ref_harness.i[4561,4574] [2021-11-16 21:40:34,918 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-16 21:40:34,919 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-16 21:40:34,971 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,972 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,972 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,972 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,973 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,978 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,979 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,979 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,979 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,980 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,980 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,981 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:34,981 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:35,009 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-16 21:40:35,010 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-16 21:40:35,010 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-16 21:40:35,011 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-16 21:40:35,011 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-16 21:40:35,012 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-16 21:40:35,012 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-16 21:40:35,012 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-16 21:40:35,013 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-16 21:40:35,013 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-16 21:40:35,028 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-16 21:40:35,039 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:35,042 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:35,059 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:35,060 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:35,060 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:35,061 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:35,061 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:35,061 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:35,061 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:35,062 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:35,062 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:35,062 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:35,063 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:35,063 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:35,063 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:35,065 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:35,065 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:35,065 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:35,066 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:35,067 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:35,068 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:35,072 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:35,073 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:35,073 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:40:35,081 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-16 21:40:35,202 INFO L208 MainTranslator]: Completed translation [2021-11-16 21:40:35,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:40:35 WrapperNode [2021-11-16 21:40:35,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-16 21:40:35,206 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-16 21:40:35,206 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-16 21:40:35,207 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-16 21:40:35,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:40:35" (1/1) ... [2021-11-16 21:40:35,280 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:40:35" (1/1) ... [2021-11-16 21:40:35,329 INFO L137 Inliner]: procedures = 699, calls = 1882, calls flagged for inlining = 58, calls inlined = 17, statements flattened = 1142 [2021-11-16 21:40:35,329 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-16 21:40:35,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-16 21:40:35,330 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-16 21:40:35,330 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-16 21:40:35,336 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:40:35" (1/1) ... [2021-11-16 21:40:35,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:40:35" (1/1) ... [2021-11-16 21:40:35,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:40:35" (1/1) ... [2021-11-16 21:40:35,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:40:35" (1/1) ... [2021-11-16 21:40:35,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:40:35" (1/1) ... [2021-11-16 21:40:35,388 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:40:35" (1/1) ... [2021-11-16 21:40:35,394 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:40:35" (1/1) ... [2021-11-16 21:40:35,402 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-16 21:40:35,403 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-16 21:40:35,403 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-16 21:40:35,403 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-16 21:40:35,404 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:40:35" (1/1) ... [2021-11-16 21:40:35,409 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-16 21:40:35,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:40:35,431 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-16 21:40:35,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-16 21:40:35,457 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2021-11-16 21:40:35,457 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2021-11-16 21:40:35,457 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_init_dynamic [2021-11-16 21:40:35,457 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_init_dynamic [2021-11-16 21:40:35,457 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-11-16 21:40:35,458 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-11-16 21:40:35,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-16 21:40:35,458 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-11-16 21:40:35,458 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-11-16 21:40:35,458 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-11-16 21:40:35,458 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-11-16 21:40:35,458 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-16 21:40:35,459 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-16 21:40:35,459 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-11-16 21:40:35,459 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-11-16 21:40:35,459 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2021-11-16 21:40:35,460 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2021-11-16 21:40:35,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-16 21:40:35,461 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-16 21:40:35,461 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-16 21:40:35,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-16 21:40:35,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-16 21:40:35,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-16 21:40:35,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-16 21:40:35,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-16 21:40:35,463 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2021-11-16 21:40:35,467 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2021-11-16 21:40:35,467 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-11-16 21:40:35,467 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-11-16 21:40:35,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-16 21:40:35,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-16 21:40:35,467 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-16 21:40:35,468 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-16 21:40:35,468 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-16 21:40:35,468 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-16 21:40:35,468 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-16 21:40:35,468 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-11-16 21:40:35,468 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-11-16 21:40:35,468 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-11-16 21:40:35,468 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-11-16 21:40:35,468 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2021-11-16 21:40:35,468 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2021-11-16 21:40:35,469 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-11-16 21:40:35,469 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-11-16 21:40:35,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-16 21:40:35,469 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-16 21:40:35,469 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-16 21:40:35,469 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-16 21:40:35,469 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-11-16 21:40:35,469 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-11-16 21:40:35,469 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2021-11-16 21:40:35,469 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2021-11-16 21:40:35,470 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2021-11-16 21:40:35,470 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2021-11-16 21:40:35,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-16 21:40:35,470 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-11-16 21:40:35,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-11-16 21:40:35,470 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-16 21:40:35,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-16 21:40:35,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-16 21:40:35,470 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_push_ref [2021-11-16 21:40:35,470 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_push_ref [2021-11-16 21:40:35,471 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2021-11-16 21:40:35,471 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2021-11-16 21:40:35,471 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-16 21:40:35,471 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-16 21:40:35,471 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-16 21:40:35,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-16 21:40:35,471 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-11-16 21:40:35,471 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-11-16 21:40:35,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-16 21:40:35,472 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-11-16 21:40:35,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-11-16 21:40:35,472 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_set_at [2021-11-16 21:40:35,472 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_set_at [2021-11-16 21:40:35,472 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2021-11-16 21:40:35,472 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2021-11-16 21:40:35,472 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-16 21:40:35,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-16 21:40:35,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-16 21:40:35,820 INFO L236 CfgBuilder]: Building ICFG [2021-11-16 21:40:35,822 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-16 21:40:37,529 INFO L277 CfgBuilder]: Performing block encoding [2021-11-16 21:40:37,541 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-16 21:40:37,541 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-16 21:40:37,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 09:40:37 BoogieIcfgContainer [2021-11-16 21:40:37,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-16 21:40:37,545 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-16 21:40:37,545 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-16 21:40:37,548 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-16 21:40:37,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 09:40:33" (1/3) ... [2021-11-16 21:40:37,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@450e4216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:40:37, skipping insertion in model container [2021-11-16 21:40:37,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:40:35" (2/3) ... [2021-11-16 21:40:37,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@450e4216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:40:37, skipping insertion in model container [2021-11-16 21:40:37,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 09:40:37" (3/3) ... [2021-11-16 21:40:37,550 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_push_ref_harness.i [2021-11-16 21:40:37,555 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-16 21:40:37,555 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-16 21:40:37,597 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-16 21:40:37,603 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-16 21:40:37,603 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-16 21:40:37,623 INFO L276 IsEmpty]: Start isEmpty. Operand has 541 states, 313 states have (on average 1.2523961661341854) internal successors, (392), 316 states have internal predecessors, (392), 193 states have call successors, (193), 33 states have call predecessors, (193), 33 states have return successors, (193), 193 states have call predecessors, (193), 193 states have call successors, (193) [2021-11-16 21:40:37,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-16 21:40:37,645 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:40:37,646 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:40:37,647 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:40:37,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:40:37,651 INFO L85 PathProgramCache]: Analyzing trace with hash -472751734, now seen corresponding path program 1 times [2021-11-16 21:40:37,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:40:37,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628376009] [2021-11-16 21:40:37,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:40:37,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:40:37,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:38,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:40:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:38,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-16 21:40:38,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:38,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-16 21:40:38,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:38,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-16 21:40:38,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:38,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-16 21:40:38,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:38,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-16 21:40:38,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:38,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-16 21:40:38,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:38,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-16 21:40:38,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:38,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-16 21:40:38,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:38,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-16 21:40:38,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:38,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-16 21:40:38,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:38,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-16 21:40:38,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:38,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:40:38,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:38,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-16 21:40:38,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:38,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:40:38,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:38,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-16 21:40:38,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:38,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-16 21:40:38,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:38,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-16 21:40:38,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:38,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-16 21:40:38,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:38,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-16 21:40:38,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:38,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-16 21:40:38,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:38,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-11-16 21:40:38,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:38,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-11-16 21:40:38,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:38,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-11-16 21:40:38,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:38,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-11-16 21:40:38,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:38,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-11-16 21:40:38,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:38,459 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-11-16 21:40:38,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:40:38,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628376009] [2021-11-16 21:40:38,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628376009] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 21:40:38,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591968056] [2021-11-16 21:40:38,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:40:38,462 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:40:38,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:40:38,463 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:40:38,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-16 21:40:38,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:38,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 2349 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-16 21:40:38,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:40:39,222 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2021-11-16 21:40:39,223 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 21:40:39,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591968056] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:40:39,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-16 21:40:39,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2021-11-16 21:40:39,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350790313] [2021-11-16 21:40:39,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:40:39,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-16 21:40:39,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:40:39,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-16 21:40:39,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-16 21:40:39,253 INFO L87 Difference]: Start difference. First operand has 541 states, 313 states have (on average 1.2523961661341854) internal successors, (392), 316 states have internal predecessors, (392), 193 states have call successors, (193), 33 states have call predecessors, (193), 33 states have return successors, (193), 193 states have call predecessors, (193), 193 states have call successors, (193) Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-16 21:40:39,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:40:39,528 INFO L93 Difference]: Finished difference Result 1071 states and 1687 transitions. [2021-11-16 21:40:39,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-16 21:40:39,531 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 162 [2021-11-16 21:40:39,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:40:39,540 INFO L225 Difference]: With dead ends: 1071 [2021-11-16 21:40:39,540 INFO L226 Difference]: Without dead ends: 536 [2021-11-16 21:40:39,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-11-16 21:40:39,549 INFO L933 BasicCegarLoop]: 725 mSDtfsCounter, 773 mSDsluCounter, 2122 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 2847 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-16 21:40:39,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [789 Valid, 2847 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-16 21:40:39,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2021-11-16 21:40:39,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 536. [2021-11-16 21:40:39,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 308 states have (on average 1.2337662337662338) internal successors, (380), 311 states have internal predecessors, (380), 193 states have call successors, (193), 33 states have call predecessors, (193), 33 states have return successors, (199), 191 states have call predecessors, (199), 191 states have call successors, (199) [2021-11-16 21:40:39,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 772 transitions. [2021-11-16 21:40:39,606 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 772 transitions. Word has length 162 [2021-11-16 21:40:39,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:40:39,607 INFO L470 AbstractCegarLoop]: Abstraction has 536 states and 772 transitions. [2021-11-16 21:40:39,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-16 21:40:39,607 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 772 transitions. [2021-11-16 21:40:39,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-16 21:40:39,611 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:40:39,611 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:40:39,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-16 21:40:39,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-16 21:40:39,828 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:40:39,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:40:39,828 INFO L85 PathProgramCache]: Analyzing trace with hash 817797277, now seen corresponding path program 1 times [2021-11-16 21:40:39,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:40:39,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077396996] [2021-11-16 21:40:39,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:40:39,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:40:39,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:39,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:40:39,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:39,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-16 21:40:39,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:39,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-16 21:40:39,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:39,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-16 21:40:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:39,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-16 21:40:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:40,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-16 21:40:40,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:40,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-16 21:40:40,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:40,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-16 21:40:40,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:40,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-16 21:40:40,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:40,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-16 21:40:40,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:40,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:40:40,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:40,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-16 21:40:40,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:40,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-16 21:40:40,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:40,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:40:40,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:40,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-16 21:40:40,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:40,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:40:40,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:40,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-16 21:40:40,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:40,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-16 21:40:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:40,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-16 21:40:40,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:40,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-16 21:40:40,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:40,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-16 21:40:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:40,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-16 21:40:40,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:40,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-11-16 21:40:40,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:40,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-16 21:40:40,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:40,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-11-16 21:40:40,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:40,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-11-16 21:40:40,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:40,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-11-16 21:40:40,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:40,235 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2021-11-16 21:40:40,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:40:40,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077396996] [2021-11-16 21:40:40,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077396996] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 21:40:40,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971571382] [2021-11-16 21:40:40,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:40:40,237 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:40:40,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:40:40,237 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:40:40,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-16 21:40:40,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:40,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 2399 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-16 21:40:40,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:40:40,948 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2021-11-16 21:40:40,949 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 21:40:40,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971571382] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:40:40,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-16 21:40:40,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2021-11-16 21:40:40,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428857848] [2021-11-16 21:40:40,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:40:40,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-16 21:40:40,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:40:40,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-16 21:40:40,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2021-11-16 21:40:40,951 INFO L87 Difference]: Start difference. First operand 536 states and 772 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 4 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2021-11-16 21:40:41,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:40:41,362 INFO L93 Difference]: Finished difference Result 1060 states and 1568 transitions. [2021-11-16 21:40:41,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-16 21:40:41,363 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 4 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 170 [2021-11-16 21:40:41,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:40:41,367 INFO L225 Difference]: With dead ends: 1060 [2021-11-16 21:40:41,367 INFO L226 Difference]: Without dead ends: 557 [2021-11-16 21:40:41,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2021-11-16 21:40:41,370 INFO L933 BasicCegarLoop]: 687 mSDtfsCounter, 810 mSDsluCounter, 3310 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 3997 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-16 21:40:41,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [884 Valid, 3997 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-16 21:40:41,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2021-11-16 21:40:41,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 555. [2021-11-16 21:40:41,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 324 states have (on average 1.2407407407407407) internal successors, (402), 327 states have internal predecessors, (402), 195 states have call successors, (195), 33 states have call predecessors, (195), 34 states have return successors, (233), 194 states have call predecessors, (233), 193 states have call successors, (233) [2021-11-16 21:40:41,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 830 transitions. [2021-11-16 21:40:41,396 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 830 transitions. Word has length 170 [2021-11-16 21:40:41,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:40:41,396 INFO L470 AbstractCegarLoop]: Abstraction has 555 states and 830 transitions. [2021-11-16 21:40:41,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 4 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2021-11-16 21:40:41,397 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 830 transitions. [2021-11-16 21:40:41,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-16 21:40:41,398 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:40:41,399 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:40:41,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-16 21:40:41,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-16 21:40:41,600 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:40:41,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:40:41,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1492622266, now seen corresponding path program 1 times [2021-11-16 21:40:41,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:40:41,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036528459] [2021-11-16 21:40:41,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:40:41,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:40:41,643 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 21:40:41,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1085429322] [2021-11-16 21:40:41,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:40:41,643 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:40:41,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:40:41,644 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:40:41,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-16 21:40:42,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:42,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 2520 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-16 21:40:42,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:40:42,349 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2021-11-16 21:40:42,349 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 21:40:42,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:40:42,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036528459] [2021-11-16 21:40:42,350 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 21:40:42,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085429322] [2021-11-16 21:40:42,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085429322] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:40:42,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 21:40:42,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-16 21:40:42,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607623515] [2021-11-16 21:40:42,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:40:42,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-16 21:40:42,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:40:42,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-16 21:40:42,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-16 21:40:42,352 INFO L87 Difference]: Start difference. First operand 555 states and 830 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2021-11-16 21:40:42,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:40:42,586 INFO L93 Difference]: Finished difference Result 1085 states and 1646 transitions. [2021-11-16 21:40:42,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-16 21:40:42,587 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 185 [2021-11-16 21:40:42,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:40:42,590 INFO L225 Difference]: With dead ends: 1085 [2021-11-16 21:40:42,590 INFO L226 Difference]: Without dead ends: 563 [2021-11-16 21:40:42,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-11-16 21:40:42,593 INFO L933 BasicCegarLoop]: 716 mSDtfsCounter, 793 mSDsluCounter, 2791 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 3507 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-16 21:40:42,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [809 Valid, 3507 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-16 21:40:42,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-11-16 21:40:42,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 555. [2021-11-16 21:40:42,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 324 states have (on average 1.2407407407407407) internal successors, (402), 327 states have internal predecessors, (402), 195 states have call successors, (195), 33 states have call predecessors, (195), 34 states have return successors, (233), 194 states have call predecessors, (233), 193 states have call successors, (233) [2021-11-16 21:40:42,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 830 transitions. [2021-11-16 21:40:42,613 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 830 transitions. Word has length 185 [2021-11-16 21:40:42,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:40:42,614 INFO L470 AbstractCegarLoop]: Abstraction has 555 states and 830 transitions. [2021-11-16 21:40:42,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2021-11-16 21:40:42,614 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 830 transitions. [2021-11-16 21:40:42,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-16 21:40:42,616 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:40:42,616 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:40:42,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-16 21:40:42,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:40:42,831 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:40:42,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:40:42,832 INFO L85 PathProgramCache]: Analyzing trace with hash 835617176, now seen corresponding path program 1 times [2021-11-16 21:40:42,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:40:42,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910252975] [2021-11-16 21:40:42,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:40:42,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:40:42,878 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 21:40:42,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [274935189] [2021-11-16 21:40:42,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:40:42,879 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:40:42,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:40:42,890 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:40:42,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-16 21:40:43,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:43,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 2592 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-16 21:40:43,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:40:43,583 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2021-11-16 21:40:43,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 21:40:43,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:40:43,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910252975] [2021-11-16 21:40:43,583 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 21:40:43,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274935189] [2021-11-16 21:40:43,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274935189] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:40:43,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 21:40:43,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-16 21:40:43,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355175487] [2021-11-16 21:40:43,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:40:43,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-16 21:40:43,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:40:43,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-16 21:40:43,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-16 21:40:43,585 INFO L87 Difference]: Start difference. First operand 555 states and 830 transitions. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 5 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2021-11-16 21:40:44,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:40:44,050 INFO L93 Difference]: Finished difference Result 1095 states and 1655 transitions. [2021-11-16 21:40:44,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-16 21:40:44,051 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 5 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) Word has length 201 [2021-11-16 21:40:44,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:40:44,055 INFO L225 Difference]: With dead ends: 1095 [2021-11-16 21:40:44,055 INFO L226 Difference]: Without dead ends: 573 [2021-11-16 21:40:44,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-11-16 21:40:44,057 INFO L933 BasicCegarLoop]: 680 mSDtfsCounter, 843 mSDsluCounter, 3937 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 4617 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-16 21:40:44,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [917 Valid, 4617 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-16 21:40:44,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-11-16 21:40:44,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 555. [2021-11-16 21:40:44,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 324 states have (on average 1.2407407407407407) internal successors, (402), 327 states have internal predecessors, (402), 195 states have call successors, (195), 33 states have call predecessors, (195), 34 states have return successors, (233), 194 states have call predecessors, (233), 193 states have call successors, (233) [2021-11-16 21:40:44,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 830 transitions. [2021-11-16 21:40:44,076 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 830 transitions. Word has length 201 [2021-11-16 21:40:44,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:40:44,077 INFO L470 AbstractCegarLoop]: Abstraction has 555 states and 830 transitions. [2021-11-16 21:40:44,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 5 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2021-11-16 21:40:44,077 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 830 transitions. [2021-11-16 21:40:44,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-11-16 21:40:44,079 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:40:44,079 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 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, 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] [2021-11-16 21:40:44,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-16 21:40:44,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:40:44,292 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:40:44,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:40:44,292 INFO L85 PathProgramCache]: Analyzing trace with hash -57404099, now seen corresponding path program 2 times [2021-11-16 21:40:44,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:40:44,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874240403] [2021-11-16 21:40:44,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:40:44,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:40:44,340 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 21:40:44,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1372994838] [2021-11-16 21:40:44,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-16 21:40:44,340 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:40:44,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:40:44,341 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:40:44,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-16 21:40:45,011 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-16 21:40:45,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-16 21:40:45,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 2713 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-16 21:40:45,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:40:45,401 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-11-16 21:40:45,401 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 21:40:45,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:40:45,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874240403] [2021-11-16 21:40:45,401 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 21:40:45,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372994838] [2021-11-16 21:40:45,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372994838] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:40:45,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 21:40:45,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-16 21:40:45,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700020393] [2021-11-16 21:40:45,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:40:45,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-16 21:40:45,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:40:45,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-16 21:40:45,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-16 21:40:45,403 INFO L87 Difference]: Start difference. First operand 555 states and 830 transitions. Second operand has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 4 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (27), 3 states have call predecessors, (27), 4 states have call successors, (27) [2021-11-16 21:40:45,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:40:45,724 INFO L93 Difference]: Finished difference Result 1067 states and 1605 transitions. [2021-11-16 21:40:45,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-16 21:40:45,725 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 4 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (27), 3 states have call predecessors, (27), 4 states have call successors, (27) Word has length 216 [2021-11-16 21:40:45,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:40:45,728 INFO L225 Difference]: With dead ends: 1067 [2021-11-16 21:40:45,728 INFO L226 Difference]: Without dead ends: 557 [2021-11-16 21:40:45,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-11-16 21:40:45,734 INFO L933 BasicCegarLoop]: 692 mSDtfsCounter, 834 mSDsluCounter, 3320 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 4012 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-16 21:40:45,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [842 Valid, 4012 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-16 21:40:45,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2021-11-16 21:40:45,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2021-11-16 21:40:45,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 325 states have (on average 1.24) internal successors, (403), 329 states have internal predecessors, (403), 195 states have call successors, (195), 33 states have call predecessors, (195), 35 states have return successors, (237), 194 states have call predecessors, (237), 193 states have call successors, (237) [2021-11-16 21:40:45,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 835 transitions. [2021-11-16 21:40:45,757 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 835 transitions. Word has length 216 [2021-11-16 21:40:45,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:40:45,757 INFO L470 AbstractCegarLoop]: Abstraction has 557 states and 835 transitions. [2021-11-16 21:40:45,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 4 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (27), 3 states have call predecessors, (27), 4 states have call successors, (27) [2021-11-16 21:40:45,758 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 835 transitions. [2021-11-16 21:40:45,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-11-16 21:40:45,759 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:40:45,760 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:40:45,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-16 21:40:45,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:40:45,975 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:40:45,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:40:45,976 INFO L85 PathProgramCache]: Analyzing trace with hash -111036656, now seen corresponding path program 1 times [2021-11-16 21:40:45,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:40:45,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108429670] [2021-11-16 21:40:45,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:40:45,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:40:46,033 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 21:40:46,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [304974449] [2021-11-16 21:40:46,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:40:46,034 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:40:46,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:40:46,035 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:40:46,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-16 21:40:46,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:46,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 2763 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-16 21:40:46,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:40:46,738 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2021-11-16 21:40:46,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 21:40:46,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:40:46,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108429670] [2021-11-16 21:40:46,738 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 21:40:46,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304974449] [2021-11-16 21:40:46,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304974449] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:40:46,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 21:40:46,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-16 21:40:46,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588423792] [2021-11-16 21:40:46,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:40:46,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-16 21:40:46,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:40:46,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-16 21:40:46,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-16 21:40:46,740 INFO L87 Difference]: Start difference. First operand 557 states and 835 transitions. Second operand has 10 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 5 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (28), 4 states have call predecessors, (28), 5 states have call successors, (28) [2021-11-16 21:40:47,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:40:47,302 INFO L93 Difference]: Finished difference Result 1085 states and 1635 transitions. [2021-11-16 21:40:47,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-16 21:40:47,303 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 5 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (28), 4 states have call predecessors, (28), 5 states have call successors, (28) Word has length 224 [2021-11-16 21:40:47,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:40:47,306 INFO L225 Difference]: With dead ends: 1085 [2021-11-16 21:40:47,306 INFO L226 Difference]: Without dead ends: 573 [2021-11-16 21:40:47,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-11-16 21:40:47,309 INFO L933 BasicCegarLoop]: 660 mSDtfsCounter, 875 mSDsluCounter, 4408 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 5068 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-16 21:40:47,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [935 Valid, 5068 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-16 21:40:47,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-11-16 21:40:47,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 571. [2021-11-16 21:40:47,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 338 states have (on average 1.2455621301775148) internal successors, (421), 341 states have internal predecessors, (421), 196 states have call successors, (196), 33 states have call predecessors, (196), 35 states have return successors, (238), 196 states have call predecessors, (238), 194 states have call successors, (238) [2021-11-16 21:40:47,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 855 transitions. [2021-11-16 21:40:47,340 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 855 transitions. Word has length 224 [2021-11-16 21:40:47,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:40:47,340 INFO L470 AbstractCegarLoop]: Abstraction has 571 states and 855 transitions. [2021-11-16 21:40:47,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 5 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (28), 4 states have call predecessors, (28), 5 states have call successors, (28) [2021-11-16 21:40:47,341 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 855 transitions. [2021-11-16 21:40:47,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-16 21:40:47,342 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:40:47,342 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:40:47,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-16 21:40:47,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:40:47,559 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:40:47,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:40:47,560 INFO L85 PathProgramCache]: Analyzing trace with hash 60507603, now seen corresponding path program 2 times [2021-11-16 21:40:47,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:40:47,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396675242] [2021-11-16 21:40:47,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:40:47,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:40:47,601 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 21:40:47,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1383951236] [2021-11-16 21:40:47,601 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-16 21:40:47,602 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:40:47,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:40:47,616 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:40:47,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-16 21:40:48,319 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-16 21:40:48,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-16 21:40:48,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 2884 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-16 21:40:48,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:40:48,665 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2021-11-16 21:40:48,666 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 21:40:48,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:40:48,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396675242] [2021-11-16 21:40:48,666 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 21:40:48,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383951236] [2021-11-16 21:40:48,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383951236] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:40:48,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 21:40:48,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-16 21:40:48,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190947230] [2021-11-16 21:40:48,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:40:48,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-16 21:40:48,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:40:48,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-16 21:40:48,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-16 21:40:48,667 INFO L87 Difference]: Start difference. First operand 571 states and 855 transitions. Second operand has 9 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (28), 4 states have call predecessors, (28), 5 states have call successors, (28) [2021-11-16 21:40:49,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:40:49,087 INFO L93 Difference]: Finished difference Result 1105 states and 1667 transitions. [2021-11-16 21:40:49,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-16 21:40:49,087 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (28), 4 states have call predecessors, (28), 5 states have call successors, (28) Word has length 239 [2021-11-16 21:40:49,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:40:49,091 INFO L225 Difference]: With dead ends: 1105 [2021-11-16 21:40:49,092 INFO L226 Difference]: Without dead ends: 579 [2021-11-16 21:40:49,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-11-16 21:40:49,095 INFO L933 BasicCegarLoop]: 686 mSDtfsCounter, 858 mSDsluCounter, 3956 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 4642 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-16 21:40:49,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [866 Valid, 4642 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-16 21:40:49,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2021-11-16 21:40:49,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 571. [2021-11-16 21:40:49,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 338 states have (on average 1.2455621301775148) internal successors, (421), 341 states have internal predecessors, (421), 196 states have call successors, (196), 33 states have call predecessors, (196), 35 states have return successors, (238), 196 states have call predecessors, (238), 194 states have call successors, (238) [2021-11-16 21:40:49,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 855 transitions. [2021-11-16 21:40:49,117 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 855 transitions. Word has length 239 [2021-11-16 21:40:49,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:40:49,118 INFO L470 AbstractCegarLoop]: Abstraction has 571 states and 855 transitions. [2021-11-16 21:40:49,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (28), 4 states have call predecessors, (28), 5 states have call successors, (28) [2021-11-16 21:40:49,118 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 855 transitions. [2021-11-16 21:40:49,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2021-11-16 21:40:49,121 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:40:49,121 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:40:49,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-16 21:40:49,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:40:49,327 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:40:49,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:40:49,328 INFO L85 PathProgramCache]: Analyzing trace with hash -907843344, now seen corresponding path program 1 times [2021-11-16 21:40:49,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:40:49,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636752976] [2021-11-16 21:40:49,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:40:49,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:40:49,370 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 21:40:49,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1560526111] [2021-11-16 21:40:49,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:40:49,370 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:40:49,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:40:49,371 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:40:49,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-16 21:40:49,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:49,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 3077 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-16 21:40:49,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:40:50,190 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2021-11-16 21:40:50,190 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 21:40:50,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:40:50,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636752976] [2021-11-16 21:40:50,191 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 21:40:50,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560526111] [2021-11-16 21:40:50,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560526111] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:40:50,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 21:40:50,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-16 21:40:50,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434100861] [2021-11-16 21:40:50,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:40:50,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-16 21:40:50,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:40:50,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-16 21:40:50,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-16 21:40:50,193 INFO L87 Difference]: Start difference. First operand 571 states and 855 transitions. Second operand has 9 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2021-11-16 21:40:50,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:40:50,699 INFO L93 Difference]: Finished difference Result 1091 states and 1635 transitions. [2021-11-16 21:40:50,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-16 21:40:50,700 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) Word has length 270 [2021-11-16 21:40:50,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:40:50,703 INFO L225 Difference]: With dead ends: 1091 [2021-11-16 21:40:50,703 INFO L226 Difference]: Without dead ends: 571 [2021-11-16 21:40:50,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-11-16 21:40:50,705 INFO L933 BasicCegarLoop]: 665 mSDtfsCounter, 847 mSDsluCounter, 3788 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 4453 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-16 21:40:50,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [903 Valid, 4453 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-16 21:40:50,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-11-16 21:40:50,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2021-11-16 21:40:50,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 338 states have (on average 1.2455621301775148) internal successors, (421), 341 states have internal predecessors, (421), 196 states have call successors, (196), 33 states have call predecessors, (196), 35 states have return successors, (235), 196 states have call predecessors, (235), 194 states have call successors, (235) [2021-11-16 21:40:50,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 852 transitions. [2021-11-16 21:40:50,727 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 852 transitions. Word has length 270 [2021-11-16 21:40:50,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:40:50,730 INFO L470 AbstractCegarLoop]: Abstraction has 571 states and 852 transitions. [2021-11-16 21:40:50,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2021-11-16 21:40:50,730 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 852 transitions. [2021-11-16 21:40:50,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2021-11-16 21:40:50,732 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:40:50,732 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:40:50,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-16 21:40:50,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-16 21:40:50,947 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:40:50,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:40:50,948 INFO L85 PathProgramCache]: Analyzing trace with hash 527769932, now seen corresponding path program 2 times [2021-11-16 21:40:50,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:40:50,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384107697] [2021-11-16 21:40:50,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:40:50,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:40:50,985 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 21:40:50,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [220696808] [2021-11-16 21:40:50,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-16 21:40:50,986 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:40:50,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:40:50,987 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:40:51,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-16 21:40:51,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-16 21:40:51,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-16 21:40:51,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 3077 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-16 21:40:51,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:40:52,242 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2021-11-16 21:40:52,242 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 21:40:52,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:40:52,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384107697] [2021-11-16 21:40:52,242 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 21:40:52,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220696808] [2021-11-16 21:40:52,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220696808] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:40:52,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 21:40:52,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-16 21:40:52,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216925134] [2021-11-16 21:40:52,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:40:52,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-16 21:40:52,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:40:52,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-16 21:40:52,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-11-16 21:40:52,244 INFO L87 Difference]: Start difference. First operand 571 states and 852 transitions. Second operand has 11 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 6 states have call successors, (34), 3 states have call predecessors, (34), 4 states have return successors, (31), 5 states have call predecessors, (31), 6 states have call successors, (31) [2021-11-16 21:40:52,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:40:52,931 INFO L93 Difference]: Finished difference Result 1099 states and 1645 transitions. [2021-11-16 21:40:52,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-16 21:40:52,931 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 6 states have call successors, (34), 3 states have call predecessors, (34), 4 states have return successors, (31), 5 states have call predecessors, (31), 6 states have call successors, (31) Word has length 270 [2021-11-16 21:40:52,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:40:52,934 INFO L225 Difference]: With dead ends: 1099 [2021-11-16 21:40:52,934 INFO L226 Difference]: Without dead ends: 573 [2021-11-16 21:40:52,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2021-11-16 21:40:52,937 INFO L933 BasicCegarLoop]: 653 mSDtfsCounter, 908 mSDsluCounter, 4994 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 5647 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-16 21:40:52,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [968 Valid, 5647 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-16 21:40:52,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-11-16 21:40:52,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 555. [2021-11-16 21:40:52,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 324 states have (on average 1.2407407407407407) internal successors, (402), 327 states have internal predecessors, (402), 195 states have call successors, (195), 33 states have call predecessors, (195), 34 states have return successors, (226), 194 states have call predecessors, (226), 193 states have call successors, (226) [2021-11-16 21:40:52,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 823 transitions. [2021-11-16 21:40:52,955 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 823 transitions. Word has length 270 [2021-11-16 21:40:52,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:40:52,955 INFO L470 AbstractCegarLoop]: Abstraction has 555 states and 823 transitions. [2021-11-16 21:40:52,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 6 states have call successors, (34), 3 states have call predecessors, (34), 4 states have return successors, (31), 5 states have call predecessors, (31), 6 states have call successors, (31) [2021-11-16 21:40:52,956 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 823 transitions. [2021-11-16 21:40:52,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2021-11-16 21:40:52,957 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:40:52,957 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:40:52,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-16 21:40:53,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:40:53,171 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:40:53,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:40:53,172 INFO L85 PathProgramCache]: Analyzing trace with hash -950288979, now seen corresponding path program 3 times [2021-11-16 21:40:53,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:40:53,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081632711] [2021-11-16 21:40:53,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:40:53,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:40:53,211 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 21:40:53,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1321946050] [2021-11-16 21:40:53,211 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-16 21:40:53,211 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:40:53,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:40:53,212 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:40:53,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-16 21:40:53,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-16 21:40:53,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-16 21:40:53,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 1881 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-16 21:40:53,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:40:54,222 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked. [2021-11-16 21:40:54,222 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 21:40:54,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:40:54,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081632711] [2021-11-16 21:40:54,222 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 21:40:54,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321946050] [2021-11-16 21:40:54,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321946050] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:40:54,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 21:40:54,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-16 21:40:54,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747522775] [2021-11-16 21:40:54,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:40:54,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-16 21:40:54,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:40:54,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-16 21:40:54,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-16 21:40:54,225 INFO L87 Difference]: Start difference. First operand 555 states and 823 transitions. Second operand has 6 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-16 21:40:54,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:40:54,425 INFO L93 Difference]: Finished difference Result 1054 states and 1581 transitions. [2021-11-16 21:40:54,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-16 21:40:54,425 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 285 [2021-11-16 21:40:54,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:40:54,429 INFO L225 Difference]: With dead ends: 1054 [2021-11-16 21:40:54,429 INFO L226 Difference]: Without dead ends: 555 [2021-11-16 21:40:54,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-16 21:40:54,431 INFO L933 BasicCegarLoop]: 720 mSDtfsCounter, 2 mSDsluCounter, 2789 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3509 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-16 21:40:54,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 3509 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-16 21:40:54,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2021-11-16 21:40:54,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 555. [2021-11-16 21:40:54,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 324 states have (on average 1.2407407407407407) internal successors, (402), 327 states have internal predecessors, (402), 195 states have call successors, (195), 33 states have call predecessors, (195), 34 states have return successors, (225), 194 states have call predecessors, (225), 193 states have call successors, (225) [2021-11-16 21:40:54,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 822 transitions. [2021-11-16 21:40:54,449 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 822 transitions. Word has length 285 [2021-11-16 21:40:54,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:40:54,449 INFO L470 AbstractCegarLoop]: Abstraction has 555 states and 822 transitions. [2021-11-16 21:40:54,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-16 21:40:54,450 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 822 transitions. [2021-11-16 21:40:54,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2021-11-16 21:40:54,451 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:40:54,451 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:40:54,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-16 21:40:54,665 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,SelfDestructingSolverStorable9 [2021-11-16 21:40:54,665 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:40:54,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:40:54,666 INFO L85 PathProgramCache]: Analyzing trace with hash 490118554, now seen corresponding path program 4 times [2021-11-16 21:40:54,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:40:54,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217718312] [2021-11-16 21:40:54,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:40:54,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:40:54,721 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 21:40:54,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [423291265] [2021-11-16 21:40:54,721 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-16 21:40:54,721 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:40:54,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:40:54,722 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:40:54,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-16 21:40:55,160 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-16 21:40:55,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-16 21:40:55,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 3319 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-16 21:40:55,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:40:55,620 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2021-11-16 21:40:55,620 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 21:40:55,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:40:55,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217718312] [2021-11-16 21:40:55,620 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 21:40:55,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423291265] [2021-11-16 21:40:55,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423291265] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:40:55,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 21:40:55,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-16 21:40:55,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087489658] [2021-11-16 21:40:55,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:40:55,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-16 21:40:55,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:40:55,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-16 21:40:55,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-11-16 21:40:55,622 INFO L87 Difference]: Start difference. First operand 555 states and 822 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 9 states have internal predecessors, (80), 6 states have call successors, (30), 4 states have call predecessors, (30), 2 states have return successors, (27), 6 states have call predecessors, (27), 5 states have call successors, (27) [2021-11-16 21:40:56,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:40:56,183 INFO L93 Difference]: Finished difference Result 1065 states and 1582 transitions. [2021-11-16 21:40:56,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-16 21:40:56,183 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 9 states have internal predecessors, (80), 6 states have call successors, (30), 4 states have call predecessors, (30), 2 states have return successors, (27), 6 states have call predecessors, (27), 5 states have call successors, (27) Word has length 300 [2021-11-16 21:40:56,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:40:56,187 INFO L225 Difference]: With dead ends: 1065 [2021-11-16 21:40:56,187 INFO L226 Difference]: Without dead ends: 567 [2021-11-16 21:40:56,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-11-16 21:40:56,190 INFO L933 BasicCegarLoop]: 662 mSDtfsCounter, 861 mSDsluCounter, 5089 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 5751 SdHoareTripleChecker+Invalid, 1021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-16 21:40:56,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [916 Valid, 5751 Invalid, 1021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-16 21:40:56,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-11-16 21:40:56,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 567. [2021-11-16 21:40:56,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 330 states have (on average 1.2393939393939395) internal successors, (409), 333 states have internal predecessors, (409), 200 states have call successors, (200), 34 states have call predecessors, (200), 35 states have return successors, (230), 199 states have call predecessors, (230), 198 states have call successors, (230) [2021-11-16 21:40:56,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 839 transitions. [2021-11-16 21:40:56,209 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 839 transitions. Word has length 300 [2021-11-16 21:40:56,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:40:56,210 INFO L470 AbstractCegarLoop]: Abstraction has 567 states and 839 transitions. [2021-11-16 21:40:56,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 9 states have internal predecessors, (80), 6 states have call successors, (30), 4 states have call predecessors, (30), 2 states have return successors, (27), 6 states have call predecessors, (27), 5 states have call successors, (27) [2021-11-16 21:40:56,210 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 839 transitions. [2021-11-16 21:40:56,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2021-11-16 21:40:56,212 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:40:56,212 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:40:56,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-16 21:40:56,426 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,SelfDestructingSolverStorable10 [2021-11-16 21:40:56,426 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:40:56,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:40:56,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1392122381, now seen corresponding path program 1 times [2021-11-16 21:40:56,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:40:56,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139724889] [2021-11-16 21:40:56,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:40:56,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:40:56,465 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 21:40:56,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [491518661] [2021-11-16 21:40:56,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:40:56,465 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:40:56,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:40:56,466 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:40:56,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-16 21:40:56,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:56,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 3440 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-16 21:40:56,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:40:57,466 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2021-11-16 21:40:57,467 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 21:40:57,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:40:57,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139724889] [2021-11-16 21:40:57,467 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 21:40:57,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491518661] [2021-11-16 21:40:57,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491518661] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:40:57,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 21:40:57,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-16 21:40:57,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465319031] [2021-11-16 21:40:57,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:40:57,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-16 21:40:57,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:40:57,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-16 21:40:57,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-16 21:40:57,469 INFO L87 Difference]: Start difference. First operand 567 states and 839 transitions. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-16 21:40:58,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:40:58,629 INFO L93 Difference]: Finished difference Result 1137 states and 1710 transitions. [2021-11-16 21:40:58,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-16 21:40:58,630 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 315 [2021-11-16 21:40:58,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:40:58,633 INFO L225 Difference]: With dead ends: 1137 [2021-11-16 21:40:58,633 INFO L226 Difference]: Without dead ends: 603 [2021-11-16 21:40:58,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-16 21:40:58,636 INFO L933 BasicCegarLoop]: 763 mSDtfsCounter, 21 mSDsluCounter, 2832 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 3595 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-16 21:40:58,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 3595 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-16 21:40:58,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-11-16 21:40:58,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 575. [2021-11-16 21:40:58,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 338 states have (on average 1.2396449704142012) internal successors, (419), 341 states have internal predecessors, (419), 200 states have call successors, (200), 34 states have call predecessors, (200), 35 states have return successors, (230), 199 states have call predecessors, (230), 198 states have call successors, (230) [2021-11-16 21:40:58,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 849 transitions. [2021-11-16 21:40:58,654 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 849 transitions. Word has length 315 [2021-11-16 21:40:58,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:40:58,654 INFO L470 AbstractCegarLoop]: Abstraction has 575 states and 849 transitions. [2021-11-16 21:40:58,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-16 21:40:58,655 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 849 transitions. [2021-11-16 21:40:58,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2021-11-16 21:40:58,656 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:40:58,656 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:40:58,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-16 21:40:58,875 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,SelfDestructingSolverStorable11 [2021-11-16 21:40:58,876 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:40:58,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:40:58,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1319987849, now seen corresponding path program 1 times [2021-11-16 21:40:58,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:40:58,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964161991] [2021-11-16 21:40:58,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:40:58,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:40:58,926 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 21:40:58,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [315254552] [2021-11-16 21:40:58,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:40:58,926 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:40:58,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:40:58,927 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:40:58,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-16 21:40:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:40:59,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 3434 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-16 21:40:59,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:40:59,785 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 300 proven. 0 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2021-11-16 21:40:59,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 21:40:59,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:40:59,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964161991] [2021-11-16 21:40:59,786 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 21:40:59,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315254552] [2021-11-16 21:40:59,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315254552] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:40:59,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 21:40:59,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 21:40:59,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252948924] [2021-11-16 21:40:59,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:40:59,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 21:40:59,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:40:59,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 21:40:59,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 21:40:59,788 INFO L87 Difference]: Start difference. First operand 575 states and 849 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-16 21:40:59,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:40:59,813 INFO L93 Difference]: Finished difference Result 1125 states and 1680 transitions. [2021-11-16 21:40:59,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 21:40:59,814 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 315 [2021-11-16 21:40:59,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:40:59,817 INFO L225 Difference]: With dead ends: 1125 [2021-11-16 21:40:59,817 INFO L226 Difference]: Without dead ends: 583 [2021-11-16 21:40:59,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-16 21:40:59,820 INFO L933 BasicCegarLoop]: 760 mSDtfsCounter, 3 mSDsluCounter, 1515 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2275 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 [2021-11-16 21:40:59,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 2275 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-16 21:40:59,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2021-11-16 21:40:59,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 579. [2021-11-16 21:40:59,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 342 states have (on average 1.236842105263158) internal successors, (423), 345 states have internal predecessors, (423), 200 states have call successors, (200), 34 states have call predecessors, (200), 35 states have return successors, (230), 199 states have call predecessors, (230), 198 states have call successors, (230) [2021-11-16 21:40:59,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 853 transitions. [2021-11-16 21:40:59,835 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 853 transitions. Word has length 315 [2021-11-16 21:40:59,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:40:59,835 INFO L470 AbstractCegarLoop]: Abstraction has 579 states and 853 transitions. [2021-11-16 21:40:59,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-16 21:40:59,835 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 853 transitions. [2021-11-16 21:40:59,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2021-11-16 21:40:59,837 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:40:59,837 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:40:59,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-16 21:41:00,051 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,SelfDestructingSolverStorable12 [2021-11-16 21:41:00,051 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:41:00,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:41:00,052 INFO L85 PathProgramCache]: Analyzing trace with hash 917678597, now seen corresponding path program 1 times [2021-11-16 21:41:00,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:41:00,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299695893] [2021-11-16 21:41:00,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:41:00,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:41:00,086 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 21:41:00,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1467536778] [2021-11-16 21:41:00,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:41:00,087 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:41:00,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:41:00,088 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:41:00,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-16 21:41:00,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:41:00,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 3424 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-16 21:41:00,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:41:01,064 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 286 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2021-11-16 21:41:01,064 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 21:41:01,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:41:01,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299695893] [2021-11-16 21:41:01,064 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 21:41:01,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467536778] [2021-11-16 21:41:01,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467536778] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:41:01,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 21:41:01,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-16 21:41:01,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078190079] [2021-11-16 21:41:01,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:41:01,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-16 21:41:01,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:41:01,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-16 21:41:01,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-16 21:41:01,066 INFO L87 Difference]: Start difference. First operand 579 states and 853 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 4 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2021-11-16 21:41:01,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:41:01,188 INFO L93 Difference]: Finished difference Result 1167 states and 1730 transitions. [2021-11-16 21:41:01,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-16 21:41:01,188 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 4 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) Word has length 315 [2021-11-16 21:41:01,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:41:01,192 INFO L225 Difference]: With dead ends: 1167 [2021-11-16 21:41:01,192 INFO L226 Difference]: Without dead ends: 642 [2021-11-16 21:41:01,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-16 21:41:01,194 INFO L933 BasicCegarLoop]: 798 mSDtfsCounter, 90 mSDsluCounter, 3095 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 3893 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-16 21:41:01,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 3893 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-16 21:41:01,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-11-16 21:41:01,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 585. [2021-11-16 21:41:01,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 345 states have (on average 1.2347826086956522) internal successors, (426), 348 states have internal predecessors, (426), 203 states have call successors, (203), 34 states have call predecessors, (203), 35 states have return successors, (233), 202 states have call predecessors, (233), 201 states have call successors, (233) [2021-11-16 21:41:01,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 862 transitions. [2021-11-16 21:41:01,213 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 862 transitions. Word has length 315 [2021-11-16 21:41:01,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:41:01,213 INFO L470 AbstractCegarLoop]: Abstraction has 585 states and 862 transitions. [2021-11-16 21:41:01,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 4 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2021-11-16 21:41:01,214 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 862 transitions. [2021-11-16 21:41:01,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2021-11-16 21:41:01,215 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:41:01,215 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:41:01,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-16 21:41:01,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:41:01,438 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:41:01,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:41:01,438 INFO L85 PathProgramCache]: Analyzing trace with hash 185711171, now seen corresponding path program 1 times [2021-11-16 21:41:01,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:41:01,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910296796] [2021-11-16 21:41:01,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:41:01,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:41:01,477 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 21:41:01,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [327732603] [2021-11-16 21:41:01,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:41:01,478 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:41:01,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:41:01,479 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:41:01,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-16 21:41:01,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:41:01,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 3421 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-16 21:41:01,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:41:02,326 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 342 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2021-11-16 21:41:02,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 21:41:02,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:41:02,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910296796] [2021-11-16 21:41:02,327 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 21:41:02,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327732603] [2021-11-16 21:41:02,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327732603] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:41:02,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 21:41:02,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-16 21:41:02,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157529188] [2021-11-16 21:41:02,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:41:02,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-16 21:41:02,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:41:02,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-16 21:41:02,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-16 21:41:02,328 INFO L87 Difference]: Start difference. First operand 585 states and 862 transitions. Second operand has 5 states, 4 states have (on average 28.5) internal successors, (114), 5 states have internal predecessors, (114), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (31), 2 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-16 21:41:02,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:41:02,499 INFO L93 Difference]: Finished difference Result 1130 states and 1668 transitions. [2021-11-16 21:41:02,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 21:41:02,500 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 28.5) internal successors, (114), 5 states have internal predecessors, (114), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (31), 2 states have call predecessors, (31), 3 states have call successors, (31) Word has length 315 [2021-11-16 21:41:02,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:41:02,503 INFO L225 Difference]: With dead ends: 1130 [2021-11-16 21:41:02,503 INFO L226 Difference]: Without dead ends: 585 [2021-11-16 21:41:02,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-16 21:41:02,505 INFO L933 BasicCegarLoop]: 720 mSDtfsCounter, 2 mSDsluCounter, 2067 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2787 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-16 21:41:02,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 2787 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-16 21:41:02,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2021-11-16 21:41:02,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 585. [2021-11-16 21:41:02,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 345 states have (on average 1.2318840579710144) internal successors, (425), 348 states have internal predecessors, (425), 203 states have call successors, (203), 34 states have call predecessors, (203), 35 states have return successors, (233), 202 states have call predecessors, (233), 201 states have call successors, (233) [2021-11-16 21:41:02,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 861 transitions. [2021-11-16 21:41:02,520 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 861 transitions. Word has length 315 [2021-11-16 21:41:02,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:41:02,520 INFO L470 AbstractCegarLoop]: Abstraction has 585 states and 861 transitions. [2021-11-16 21:41:02,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 28.5) internal successors, (114), 5 states have internal predecessors, (114), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (31), 2 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-16 21:41:02,521 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 861 transitions. [2021-11-16 21:41:02,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2021-11-16 21:41:02,522 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:41:02,522 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:41:02,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-16 21:41:02,735 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,SelfDestructingSolverStorable14 [2021-11-16 21:41:02,735 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:41:02,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:41:02,736 INFO L85 PathProgramCache]: Analyzing trace with hash -341682879, now seen corresponding path program 1 times [2021-11-16 21:41:02,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:41:02,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028133354] [2021-11-16 21:41:02,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:41:02,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:41:02,767 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 21:41:02,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2091444839] [2021-11-16 21:41:02,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:41:02,768 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:41:02,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:41:02,768 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:41:02,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-16 21:41:03,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:41:03,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 3424 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-16 21:41:03,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:41:03,708 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 348 proven. 0 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2021-11-16 21:41:03,708 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 21:41:03,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:41:03,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028133354] [2021-11-16 21:41:03,709 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 21:41:03,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091444839] [2021-11-16 21:41:03,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091444839] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:41:03,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 21:41:03,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-16 21:41:03,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665784655] [2021-11-16 21:41:03,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:41:03,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-16 21:41:03,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:41:03,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-16 21:41:03,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-16 21:41:03,711 INFO L87 Difference]: Start difference. First operand 585 states and 861 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 4 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2021-11-16 21:41:03,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:41:03,826 INFO L93 Difference]: Finished difference Result 1110 states and 1636 transitions. [2021-11-16 21:41:03,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-16 21:41:03,827 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 4 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) Word has length 315 [2021-11-16 21:41:03,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:41:03,830 INFO L225 Difference]: With dead ends: 1110 [2021-11-16 21:41:03,830 INFO L226 Difference]: Without dead ends: 579 [2021-11-16 21:41:03,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-16 21:41:03,832 INFO L933 BasicCegarLoop]: 755 mSDtfsCounter, 94 mSDsluCounter, 3614 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 4369 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-16 21:41:03,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 4369 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-16 21:41:03,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2021-11-16 21:41:03,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2021-11-16 21:41:03,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 342 states have (on average 1.2309941520467835) internal successors, (421), 345 states have internal predecessors, (421), 200 states have call successors, (200), 34 states have call predecessors, (200), 35 states have return successors, (230), 199 states have call predecessors, (230), 198 states have call successors, (230) [2021-11-16 21:41:03,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 851 transitions. [2021-11-16 21:41:03,848 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 851 transitions. Word has length 315 [2021-11-16 21:41:03,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:41:03,849 INFO L470 AbstractCegarLoop]: Abstraction has 579 states and 851 transitions. [2021-11-16 21:41:03,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 4 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2021-11-16 21:41:03,849 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 851 transitions. [2021-11-16 21:41:03,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2021-11-16 21:41:03,850 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:41:03,850 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:41:03,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-16 21:41:04,063 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,SelfDestructingSolverStorable15 [2021-11-16 21:41:04,063 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:41:04,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:41:04,064 INFO L85 PathProgramCache]: Analyzing trace with hash -640756351, now seen corresponding path program 1 times [2021-11-16 21:41:04,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:41:04,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345970467] [2021-11-16 21:41:04,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:41:04,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:41:04,097 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 21:41:04,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1183636845] [2021-11-16 21:41:04,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:41:04,099 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:41:04,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:41:04,100 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:41:04,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-16 21:41:04,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:41:04,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 3430 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-16 21:41:04,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:41:05,055 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 286 proven. 3 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2021-11-16 21:41:05,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 21:41:05,639 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2021-11-16 21:41:05,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:41:05,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345970467] [2021-11-16 21:41:05,639 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 21:41:05,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183636845] [2021-11-16 21:41:05,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183636845] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-16 21:41:05,640 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-16 21:41:05,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-11-16 21:41:05,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180266598] [2021-11-16 21:41:05,640 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-16 21:41:05,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-16 21:41:05,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:41:05,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-16 21:41:05,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-16 21:41:05,642 INFO L87 Difference]: Start difference. First operand 579 states and 851 transitions. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 8 states have internal predecessors, (97), 5 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (34), 6 states have call predecessors, (34), 5 states have call successors, (34) [2021-11-16 21:41:05,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:41:05,790 INFO L93 Difference]: Finished difference Result 1185 states and 1754 transitions. [2021-11-16 21:41:05,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-16 21:41:05,791 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 8 states have internal predecessors, (97), 5 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (34), 6 states have call predecessors, (34), 5 states have call successors, (34) Word has length 315 [2021-11-16 21:41:05,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:41:05,794 INFO L225 Difference]: With dead ends: 1185 [2021-11-16 21:41:05,794 INFO L226 Difference]: Without dead ends: 660 [2021-11-16 21:41:05,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 631 GetRequests, 620 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-11-16 21:41:05,796 INFO L933 BasicCegarLoop]: 825 mSDtfsCounter, 139 mSDsluCounter, 6440 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 7265 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-16 21:41:05,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 7265 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-16 21:41:05,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2021-11-16 21:41:05,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 655. [2021-11-16 21:41:05,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 385 states have (on average 1.2337662337662338) internal successors, (475), 389 states have internal predecessors, (475), 231 states have call successors, (231), 35 states have call predecessors, (231), 37 states have return successors, (265), 230 states have call predecessors, (265), 229 states have call successors, (265) [2021-11-16 21:41:05,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 971 transitions. [2021-11-16 21:41:05,816 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 971 transitions. Word has length 315 [2021-11-16 21:41:05,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:41:05,816 INFO L470 AbstractCegarLoop]: Abstraction has 655 states and 971 transitions. [2021-11-16 21:41:05,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 8 states have internal predecessors, (97), 5 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (34), 6 states have call predecessors, (34), 5 states have call successors, (34) [2021-11-16 21:41:05,817 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 971 transitions. [2021-11-16 21:41:05,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2021-11-16 21:41:05,818 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:41:05,818 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:41:05,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-16 21:41:06,035 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,SelfDestructingSolverStorable16 [2021-11-16 21:41:06,036 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:41:06,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:41:06,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1237677759, now seen corresponding path program 1 times [2021-11-16 21:41:06,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:41:06,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775816294] [2021-11-16 21:41:06,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:41:06,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:41:06,067 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 21:41:06,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [911762687] [2021-11-16 21:41:06,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:41:06,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:41:06,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:41:06,069 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:41:06,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-16 21:41:06,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:41:06,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 3461 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-16 21:41:06,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:41:06,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2021-11-16 21:41:07,149 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 317 proven. 0 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2021-11-16 21:41:07,149 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 21:41:07,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:41:07,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775816294] [2021-11-16 21:41:07,150 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 21:41:07,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911762687] [2021-11-16 21:41:07,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911762687] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:41:07,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 21:41:07,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-16 21:41:07,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442659893] [2021-11-16 21:41:07,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:41:07,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-16 21:41:07,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:41:07,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-16 21:41:07,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-16 21:41:07,151 INFO L87 Difference]: Start difference. First operand 655 states and 971 transitions. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 6 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2021-11-16 21:41:08,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:41:08,345 INFO L93 Difference]: Finished difference Result 1328 states and 2042 transitions. [2021-11-16 21:41:08,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-16 21:41:08,346 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 6 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) Word has length 326 [2021-11-16 21:41:08,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:41:08,350 INFO L225 Difference]: With dead ends: 1328 [2021-11-16 21:41:08,350 INFO L226 Difference]: Without dead ends: 706 [2021-11-16 21:41:08,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2021-11-16 21:41:08,353 INFO L933 BasicCegarLoop]: 718 mSDtfsCounter, 95 mSDsluCounter, 5431 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 6149 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-16 21:41:08,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 6149 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-16 21:41:08,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2021-11-16 21:41:08,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 666. [2021-11-16 21:41:08,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 395 states have (on average 1.2329113924050632) internal successors, (487), 398 states have internal predecessors, (487), 231 states have call successors, (231), 35 states have call predecessors, (231), 38 states have return successors, (302), 232 states have call predecessors, (302), 229 states have call successors, (302) [2021-11-16 21:41:08,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1020 transitions. [2021-11-16 21:41:08,377 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1020 transitions. Word has length 326 [2021-11-16 21:41:08,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:41:08,377 INFO L470 AbstractCegarLoop]: Abstraction has 666 states and 1020 transitions. [2021-11-16 21:41:08,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 6 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2021-11-16 21:41:08,378 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1020 transitions. [2021-11-16 21:41:08,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2021-11-16 21:41:08,379 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:41:08,379 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:41:08,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-16 21:41:08,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-16 21:41:08,595 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:41:08,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:41:08,596 INFO L85 PathProgramCache]: Analyzing trace with hash 599200643, now seen corresponding path program 1 times [2021-11-16 21:41:08,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:41:08,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562882823] [2021-11-16 21:41:08,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:41:08,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:41:08,630 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 21:41:08,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1047139863] [2021-11-16 21:41:08,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:41:08,630 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:41:08,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:41:08,631 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:41:08,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-16 21:41:09,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:41:09,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 3425 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-16 21:41:09,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:41:09,502 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 368 proven. 0 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2021-11-16 21:41:09,502 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 21:41:09,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:41:09,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562882823] [2021-11-16 21:41:09,502 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 21:41:09,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047139863] [2021-11-16 21:41:09,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047139863] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:41:09,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 21:41:09,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 21:41:09,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785459371] [2021-11-16 21:41:09,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:41:09,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 21:41:09,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:41:09,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 21:41:09,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 21:41:09,505 INFO L87 Difference]: Start difference. First operand 666 states and 1020 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-16 21:41:09,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:41:09,535 INFO L93 Difference]: Finished difference Result 1299 states and 2077 transitions. [2021-11-16 21:41:09,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 21:41:09,539 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 315 [2021-11-16 21:41:09,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:41:09,543 INFO L225 Difference]: With dead ends: 1299 [2021-11-16 21:41:09,543 INFO L226 Difference]: Without dead ends: 666 [2021-11-16 21:41:09,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-16 21:41:09,547 INFO L933 BasicCegarLoop]: 765 mSDtfsCounter, 7 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2275 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 [2021-11-16 21:41:09,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 2275 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-16 21:41:09,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2021-11-16 21:41:09,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 666. [2021-11-16 21:41:09,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 395 states have (on average 1.230379746835443) internal successors, (486), 398 states have internal predecessors, (486), 231 states have call successors, (231), 35 states have call predecessors, (231), 38 states have return successors, (302), 232 states have call predecessors, (302), 229 states have call successors, (302) [2021-11-16 21:41:09,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1019 transitions. [2021-11-16 21:41:09,569 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1019 transitions. Word has length 315 [2021-11-16 21:41:09,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:41:09,569 INFO L470 AbstractCegarLoop]: Abstraction has 666 states and 1019 transitions. [2021-11-16 21:41:09,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-16 21:41:09,570 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1019 transitions. [2021-11-16 21:41:09,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2021-11-16 21:41:09,571 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:41:09,571 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:41:09,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-16 21:41:09,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:41:09,782 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:41:09,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:41:09,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1887578873, now seen corresponding path program 1 times [2021-11-16 21:41:09,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:41:09,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249805687] [2021-11-16 21:41:09,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:41:09,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:41:09,810 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 21:41:09,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [105214725] [2021-11-16 21:41:09,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:41:09,811 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:41:09,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:41:09,812 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) [2021-11-16 21:41:09,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-16 21:41:10,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:41:10,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 3464 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-16 21:41:10,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:41:10,734 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 395 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2021-11-16 21:41:10,735 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 21:41:10,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:41:10,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249805687] [2021-11-16 21:41:10,735 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 21:41:10,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105214725] [2021-11-16 21:41:10,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105214725] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:41:10,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 21:41:10,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-16 21:41:10,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253535226] [2021-11-16 21:41:10,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:41:10,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-16 21:41:10,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:41:10,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-16 21:41:10,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-16 21:41:10,736 INFO L87 Difference]: Start difference. First operand 666 states and 1019 transitions. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-16 21:41:11,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:41:11,556 INFO L93 Difference]: Finished difference Result 1299 states and 2075 transitions. [2021-11-16 21:41:11,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-16 21:41:11,556 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 328 [2021-11-16 21:41:11,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:41:11,560 INFO L225 Difference]: With dead ends: 1299 [2021-11-16 21:41:11,560 INFO L226 Difference]: Without dead ends: 666 [2021-11-16 21:41:11,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-16 21:41:11,565 INFO L933 BasicCegarLoop]: 792 mSDtfsCounter, 7 mSDsluCounter, 2180 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2972 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-16 21:41:11,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 2972 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-16 21:41:11,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2021-11-16 21:41:11,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 666. [2021-11-16 21:41:11,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 395 states have (on average 1.2278481012658229) internal successors, (485), 398 states have internal predecessors, (485), 231 states have call successors, (231), 35 states have call predecessors, (231), 38 states have return successors, (302), 232 states have call predecessors, (302), 229 states have call successors, (302) [2021-11-16 21:41:11,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1018 transitions. [2021-11-16 21:41:11,595 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1018 transitions. Word has length 328 [2021-11-16 21:41:11,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:41:11,596 INFO L470 AbstractCegarLoop]: Abstraction has 666 states and 1018 transitions. [2021-11-16 21:41:11,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-16 21:41:11,597 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1018 transitions. [2021-11-16 21:41:11,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2021-11-16 21:41:11,598 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:41:11,598 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:41:11,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-16 21:41:11,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:41:11,804 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:41:11,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:41:11,804 INFO L85 PathProgramCache]: Analyzing trace with hash -16845823, now seen corresponding path program 1 times [2021-11-16 21:41:11,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:41:11,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139058325] [2021-11-16 21:41:11,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:41:11,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:41:11,833 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 21:41:11,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1898280514] [2021-11-16 21:41:11,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:41:11,834 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:41:11,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:41:11,835 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) [2021-11-16 21:41:11,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-16 21:41:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:41:12,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 3467 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-16 21:41:12,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:41:12,710 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 314 proven. 0 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2021-11-16 21:41:12,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 21:41:12,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:41:12,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139058325] [2021-11-16 21:41:12,711 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 21:41:12,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898280514] [2021-11-16 21:41:12,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898280514] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:41:12,711 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 21:41:12,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-16 21:41:12,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236142095] [2021-11-16 21:41:12,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:41:12,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-16 21:41:12,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:41:12,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-16 21:41:12,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-16 21:41:12,712 INFO L87 Difference]: Start difference. First operand 666 states and 1018 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-16 21:41:12,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:41:12,807 INFO L93 Difference]: Finished difference Result 1319 states and 2054 transitions. [2021-11-16 21:41:12,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-16 21:41:12,808 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 326 [2021-11-16 21:41:12,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:41:12,811 INFO L225 Difference]: With dead ends: 1319 [2021-11-16 21:41:12,811 INFO L226 Difference]: Without dead ends: 686 [2021-11-16 21:41:12,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-16 21:41:12,814 INFO L933 BasicCegarLoop]: 780 mSDtfsCounter, 8 mSDsluCounter, 2312 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 3092 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 [2021-11-16 21:41:12,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 3092 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-16 21:41:12,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2021-11-16 21:41:12,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 674. [2021-11-16 21:41:12,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 403 states have (on average 1.2233250620347396) internal successors, (493), 406 states have internal predecessors, (493), 231 states have call successors, (231), 35 states have call predecessors, (231), 38 states have return successors, (302), 232 states have call predecessors, (302), 229 states have call successors, (302) [2021-11-16 21:41:12,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1026 transitions. [2021-11-16 21:41:12,850 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 1026 transitions. Word has length 326 [2021-11-16 21:41:12,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:41:12,850 INFO L470 AbstractCegarLoop]: Abstraction has 674 states and 1026 transitions. [2021-11-16 21:41:12,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-16 21:41:12,851 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 1026 transitions. [2021-11-16 21:41:12,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2021-11-16 21:41:12,852 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:41:12,852 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:41:12,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-16 21:41:13,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:41:13,063 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:41:13,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:41:13,064 INFO L85 PathProgramCache]: Analyzing trace with hash -932941941, now seen corresponding path program 1 times [2021-11-16 21:41:13,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:41:13,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501045568] [2021-11-16 21:41:13,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:41:13,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:41:13,092 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 21:41:13,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [524358064] [2021-11-16 21:41:13,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:41:13,093 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:41:13,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:41:13,094 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) [2021-11-16 21:41:13,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-16 21:41:13,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:41:13,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 3437 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-16 21:41:13,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:41:14,124 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 286 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2021-11-16 21:41:14,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 21:41:14,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:41:14,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501045568] [2021-11-16 21:41:14,124 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 21:41:14,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524358064] [2021-11-16 21:41:14,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524358064] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:41:14,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 21:41:14,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-16 21:41:14,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692950302] [2021-11-16 21:41:14,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:41:14,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-16 21:41:14,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:41:14,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-16 21:41:14,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-16 21:41:14,126 INFO L87 Difference]: Start difference. First operand 674 states and 1026 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 4 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2021-11-16 21:41:14,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:41:14,259 INFO L93 Difference]: Finished difference Result 1221 states and 1855 transitions. [2021-11-16 21:41:14,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-16 21:41:14,259 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 4 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) Word has length 319 [2021-11-16 21:41:14,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:41:14,263 INFO L225 Difference]: With dead ends: 1221 [2021-11-16 21:41:14,263 INFO L226 Difference]: Without dead ends: 601 [2021-11-16 21:41:14,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-16 21:41:14,266 INFO L933 BasicCegarLoop]: 756 mSDtfsCounter, 86 mSDsluCounter, 2857 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 3613 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-16 21:41:14,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 3613 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-16 21:41:14,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2021-11-16 21:41:14,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 601. [2021-11-16 21:41:14,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 362 states have (on average 1.2154696132596685) internal successors, (440), 365 states have internal predecessors, (440), 200 states have call successors, (200), 34 states have call predecessors, (200), 37 states have return successors, (266), 201 states have call predecessors, (266), 198 states have call successors, (266) [2021-11-16 21:41:14,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 906 transitions. [2021-11-16 21:41:14,285 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 906 transitions. Word has length 319 [2021-11-16 21:41:14,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:41:14,286 INFO L470 AbstractCegarLoop]: Abstraction has 601 states and 906 transitions. [2021-11-16 21:41:14,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 4 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2021-11-16 21:41:14,286 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 906 transitions. [2021-11-16 21:41:14,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2021-11-16 21:41:14,288 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:41:14,288 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 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, 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] [2021-11-16 21:41:14,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-16 21:41:14,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:41:14,505 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:41:14,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:41:14,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1385037761, now seen corresponding path program 1 times [2021-11-16 21:41:14,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:41:14,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108384211] [2021-11-16 21:41:14,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:41:14,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:41:14,549 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 21:41:14,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [519625438] [2021-11-16 21:41:14,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:41:14,549 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:41:14,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:41:14,550 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) [2021-11-16 21:41:14,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-16 21:41:15,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:41:15,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 3471 conjuncts, 152 conjunts are in the unsatisfiable core [2021-11-16 21:41:15,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:41:15,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-16 21:41:15,507 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-16 21:41:15,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-11-16 21:41:15,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 21:41:15,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-16 21:41:17,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 21:41:17,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-16 21:41:17,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 21:41:17,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-16 21:41:19,650 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-16 21:41:19,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 26 [2021-11-16 21:41:19,653 INFO L388 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 20 treesize of output 18 [2021-11-16 21:41:19,657 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-16 21:41:19,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2021-11-16 21:41:21,842 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| (select (select |c_#memory_$Pointer$.offset| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset|)))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| (select (select |c_#memory_$Pointer$.base| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset|))) |c_#memory_$Pointer$.base|))) is different from true [2021-11-16 21:41:24,750 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.offset| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|)))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|))) |c_#memory_$Pointer$.base|))) is different from true [2021-11-16 21:43:13,958 INFO L354 Elim1Store]: treesize reduction 119, result has 0.8 percent of original size [2021-11-16 21:43:13,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 118 treesize of output 1 [2021-11-16 21:43:15,245 INFO L134 CoverageAnalysis]: Checked inductivity of 709 backedges. 336 proven. 20 refuted. 0 times theorem prover too weak. 350 trivial. 3 not checked. [2021-11-16 21:43:15,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 21:43:47,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:43:47,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108384211] [2021-11-16 21:43:47,417 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 21:43:47,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519625438] [2021-11-16 21:43:47,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519625438] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 21:43:47,418 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-16 21:43:47,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2021-11-16 21:43:47,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238251801] [2021-11-16 21:43:47,418 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-16 21:43:47,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-16 21:43:47,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:43:47,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-16 21:43:47,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1387, Unknown=56, NotChecked=154, Total=1722 [2021-11-16 21:43:47,419 INFO L87 Difference]: Start difference. First operand 601 states and 906 transitions. Second operand has 38 states, 33 states have (on average 4.545454545454546) internal successors, (150), 33 states have internal predecessors, (150), 13 states have call successors, (40), 7 states have call predecessors, (40), 13 states have return successors, (37), 12 states have call predecessors, (37), 13 states have call successors, (37) [2021-11-16 21:43:49,443 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 21:44:41,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:44:41,731 INFO L93 Difference]: Finished difference Result 1428 states and 2285 transitions. [2021-11-16 21:44:41,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-16 21:44:41,732 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 33 states have (on average 4.545454545454546) internal successors, (150), 33 states have internal predecessors, (150), 13 states have call successors, (40), 7 states have call predecessors, (40), 13 states have return successors, (37), 12 states have call predecessors, (37), 13 states have call successors, (37) Word has length 330 [2021-11-16 21:44:41,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:44:41,737 INFO L225 Difference]: With dead ends: 1428 [2021-11-16 21:44:41,737 INFO L226 Difference]: Without dead ends: 860 [2021-11-16 21:44:41,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 499 SyntacticMatches, 7 SemanticMatches, 59 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 928 ImplicationChecksByTransitivity, 171.3s TimeCoverageRelationStatistics Valid=275, Invalid=3093, Unknown=62, NotChecked=230, Total=3660 [2021-11-16 21:44:41,741 INFO L933 BasicCegarLoop]: 779 mSDtfsCounter, 595 mSDsluCounter, 7531 mSDsCounter, 0 mSdLazyCounter, 3899 mSolverCounterSat, 890 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 8310 SdHoareTripleChecker+Invalid, 12940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 890 IncrementalHoareTripleChecker+Valid, 3899 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 8150 IncrementalHoareTripleChecker+Unchecked, 23.7s IncrementalHoareTripleChecker+Time [2021-11-16 21:44:41,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [667 Valid, 8310 Invalid, 12940 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [890 Valid, 3899 Invalid, 1 Unknown, 8150 Unchecked, 23.7s Time] [2021-11-16 21:44:41,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2021-11-16 21:44:41,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 657. [2021-11-16 21:44:41,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 406 states have (on average 1.2142857142857142) internal successors, (493), 412 states have internal predecessors, (493), 204 states have call successors, (204), 37 states have call predecessors, (204), 45 states have return successors, (358), 207 states have call predecessors, (358), 202 states have call successors, (358) [2021-11-16 21:44:41,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1055 transitions. [2021-11-16 21:44:41,780 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1055 transitions. Word has length 330 [2021-11-16 21:44:41,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:44:41,780 INFO L470 AbstractCegarLoop]: Abstraction has 657 states and 1055 transitions. [2021-11-16 21:44:41,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 33 states have (on average 4.545454545454546) internal successors, (150), 33 states have internal predecessors, (150), 13 states have call successors, (40), 7 states have call predecessors, (40), 13 states have return successors, (37), 12 states have call predecessors, (37), 13 states have call successors, (37) [2021-11-16 21:44:41,780 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1055 transitions. [2021-11-16 21:44:41,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2021-11-16 21:44:41,782 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:44:41,782 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 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] [2021-11-16 21:44:41,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-16 21:44:42,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:44:42,004 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:44:42,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:44:42,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1978518962, now seen corresponding path program 1 times [2021-11-16 21:44:42,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:44:42,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742439051] [2021-11-16 21:44:42,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:44:42,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:44:42,033 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 21:44:42,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2017084308] [2021-11-16 21:44:42,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:44:42,034 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:44:42,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:44:42,035 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) [2021-11-16 21:44:42,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-16 21:44:42,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:44:42,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 3571 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-16 21:44:42,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:44:44,525 INFO L134 CoverageAnalysis]: Checked inductivity of 779 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2021-11-16 21:44:44,525 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 21:44:44,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:44:44,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742439051] [2021-11-16 21:44:44,525 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 21:44:44,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017084308] [2021-11-16 21:44:44,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017084308] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:44:44,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 21:44:44,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-16 21:44:44,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528891313] [2021-11-16 21:44:44,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:44:44,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-16 21:44:44,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:44:44,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-16 21:44:44,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-16 21:44:44,527 INFO L87 Difference]: Start difference. First operand 657 states and 1055 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-16 21:44:46,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:44:46,555 INFO L93 Difference]: Finished difference Result 1270 states and 2119 transitions. [2021-11-16 21:44:46,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 21:44:46,556 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 364 [2021-11-16 21:44:46,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:44:46,560 INFO L225 Difference]: With dead ends: 1270 [2021-11-16 21:44:46,560 INFO L226 Difference]: Without dead ends: 659 [2021-11-16 21:44:46,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-16 21:44:46,563 INFO L933 BasicCegarLoop]: 781 mSDtfsCounter, 13 mSDsluCounter, 2157 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2938 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-16 21:44:46,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 2938 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-16 21:44:46,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2021-11-16 21:44:46,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 657. [2021-11-16 21:44:46,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 406 states have (on average 1.20935960591133) internal successors, (491), 412 states have internal predecessors, (491), 204 states have call successors, (204), 37 states have call predecessors, (204), 45 states have return successors, (358), 207 states have call predecessors, (358), 202 states have call successors, (358) [2021-11-16 21:44:46,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1053 transitions. [2021-11-16 21:44:46,598 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1053 transitions. Word has length 364 [2021-11-16 21:44:46,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:44:46,598 INFO L470 AbstractCegarLoop]: Abstraction has 657 states and 1053 transitions. [2021-11-16 21:44:46,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-16 21:44:46,598 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1053 transitions. [2021-11-16 21:44:46,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2021-11-16 21:44:46,600 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:44:46,600 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1] [2021-11-16 21:44:46,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-16 21:44:46,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:44:46,808 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:44:46,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:44:46,808 INFO L85 PathProgramCache]: Analyzing trace with hash 359356051, now seen corresponding path program 1 times [2021-11-16 21:44:46,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:44:46,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510765827] [2021-11-16 21:44:46,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:44:46,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:44:46,839 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 21:44:46,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1784185012] [2021-11-16 21:44:46,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:44:46,840 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:44:46,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:44:46,847 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) [2021-11-16 21:44:46,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-16 21:44:47,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:44:47,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 3515 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-16 21:44:47,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:44:49,155 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 420 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2021-11-16 21:44:49,155 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 21:44:49,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:44:49,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510765827] [2021-11-16 21:44:49,156 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 21:44:49,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784185012] [2021-11-16 21:44:49,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784185012] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:44:49,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 21:44:49,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-16 21:44:49,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300924320] [2021-11-16 21:44:49,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:44:49,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-16 21:44:49,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:44:49,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-16 21:44:49,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-11-16 21:44:49,157 INFO L87 Difference]: Start difference. First operand 657 states and 1053 transitions. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 9 states have internal predecessors, (135), 2 states have call successors, (37), 2 states have call predecessors, (37), 5 states have return successors, (36), 5 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-16 21:44:49,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:44:49,916 INFO L93 Difference]: Finished difference Result 1297 states and 2097 transitions. [2021-11-16 21:44:49,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-16 21:44:49,916 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 9 states have internal predecessors, (135), 2 states have call successors, (37), 2 states have call predecessors, (37), 5 states have return successors, (36), 5 states have call predecessors, (36), 2 states have call successors, (36) Word has length 344 [2021-11-16 21:44:49,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:44:49,920 INFO L225 Difference]: With dead ends: 1297 [2021-11-16 21:44:49,920 INFO L226 Difference]: Without dead ends: 686 [2021-11-16 21:44:49,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-16 21:44:49,923 INFO L933 BasicCegarLoop]: 798 mSDtfsCounter, 16 mSDsluCounter, 7946 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 8744 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-16 21:44:49,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 8744 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-16 21:44:49,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2021-11-16 21:44:49,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 664. [2021-11-16 21:44:49,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 413 states have (on average 1.208232445520581) internal successors, (499), 417 states have internal predecessors, (499), 204 states have call successors, (204), 37 states have call predecessors, (204), 45 states have return successors, (324), 209 states have call predecessors, (324), 202 states have call successors, (324) [2021-11-16 21:44:49,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 1027 transitions. [2021-11-16 21:44:49,951 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 1027 transitions. Word has length 344 [2021-11-16 21:44:49,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:44:49,951 INFO L470 AbstractCegarLoop]: Abstraction has 664 states and 1027 transitions. [2021-11-16 21:44:49,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 9 states have internal predecessors, (135), 2 states have call successors, (37), 2 states have call predecessors, (37), 5 states have return successors, (36), 5 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-16 21:44:49,951 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 1027 transitions. [2021-11-16 21:44:49,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2021-11-16 21:44:49,953 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:44:49,953 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 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, 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] [2021-11-16 21:44:49,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-16 21:44:50,167 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,SelfDestructingSolverStorable24 [2021-11-16 21:44:50,167 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:44:50,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:44:50,168 INFO L85 PathProgramCache]: Analyzing trace with hash -94342040, now seen corresponding path program 2 times [2021-11-16 21:44:50,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:44:50,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275477191] [2021-11-16 21:44:50,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:44:50,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:44:50,202 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 21:44:50,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1825108056] [2021-11-16 21:44:50,202 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-16 21:44:50,203 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:44:50,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:44:50,204 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) [2021-11-16 21:44:50,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-16 21:44:51,084 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-16 21:44:51,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-16 21:44:51,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 3524 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-16 21:44:51,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:44:53,203 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 248 proven. 7 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2021-11-16 21:44:53,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 21:44:58,447 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 86 proven. 13 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2021-11-16 21:44:58,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:44:58,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275477191] [2021-11-16 21:44:58,448 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 21:44:58,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825108056] [2021-11-16 21:44:58,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825108056] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-16 21:44:58,448 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-16 21:44:58,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 21 [2021-11-16 21:44:58,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134600297] [2021-11-16 21:44:58,448 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-16 21:44:58,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-16 21:44:58,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:44:58,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-16 21:44:58,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2021-11-16 21:44:58,450 INFO L87 Difference]: Start difference. First operand 664 states and 1027 transitions. Second operand has 21 states, 18 states have (on average 7.611111111111111) internal successors, (137), 15 states have internal predecessors, (137), 5 states have call successors, (39), 2 states have call predecessors, (39), 8 states have return successors, (41), 8 states have call predecessors, (41), 5 states have call successors, (41) [2021-11-16 21:45:03,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:45:03,708 INFO L93 Difference]: Finished difference Result 1266 states and 1982 transitions. [2021-11-16 21:45:03,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-16 21:45:03,709 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 7.611111111111111) internal successors, (137), 15 states have internal predecessors, (137), 5 states have call successors, (39), 2 states have call predecessors, (39), 8 states have return successors, (41), 8 states have call predecessors, (41), 5 states have call successors, (41) Word has length 350 [2021-11-16 21:45:03,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:45:03,712 INFO L225 Difference]: With dead ends: 1266 [2021-11-16 21:45:03,712 INFO L226 Difference]: Without dead ends: 670 [2021-11-16 21:45:03,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 701 GetRequests, 678 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=60, Invalid=492, Unknown=0, NotChecked=0, Total=552 [2021-11-16 21:45:03,714 INFO L933 BasicCegarLoop]: 757 mSDtfsCounter, 21 mSDsluCounter, 11265 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 12022 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-16 21:45:03,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 12022 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-16 21:45:03,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2021-11-16 21:45:03,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 664. [2021-11-16 21:45:03,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 413 states have (on average 1.208232445520581) internal successors, (499), 417 states have internal predecessors, (499), 204 states have call successors, (204), 37 states have call predecessors, (204), 45 states have return successors, (322), 209 states have call predecessors, (322), 202 states have call successors, (322) [2021-11-16 21:45:03,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 1025 transitions. [2021-11-16 21:45:03,739 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 1025 transitions. Word has length 350 [2021-11-16 21:45:03,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:45:03,739 INFO L470 AbstractCegarLoop]: Abstraction has 664 states and 1025 transitions. [2021-11-16 21:45:03,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 7.611111111111111) internal successors, (137), 15 states have internal predecessors, (137), 5 states have call successors, (39), 2 states have call predecessors, (39), 8 states have return successors, (41), 8 states have call predecessors, (41), 5 states have call successors, (41) [2021-11-16 21:45:03,740 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 1025 transitions. [2021-11-16 21:45:03,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2021-11-16 21:45:03,741 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:45:03,741 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 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, 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] [2021-11-16 21:45:03,765 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-11-16 21:45:03,955 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,SelfDestructingSolverStorable25 [2021-11-16 21:45:03,956 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:45:03,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:45:03,956 INFO L85 PathProgramCache]: Analyzing trace with hash 139354248, now seen corresponding path program 1 times [2021-11-16 21:45:03,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:45:03,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89901521] [2021-11-16 21:45:03,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:45:03,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:45:03,985 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 21:45:03,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [296004592] [2021-11-16 21:45:03,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:45:03,985 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:45:03,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:45:03,986 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) [2021-11-16 21:45:03,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-16 21:45:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:45:04,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 3504 conjuncts, 212 conjunts are in the unsatisfiable core [2021-11-16 21:45:04,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:45:10,980 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~b#1| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~a#1| Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.offset| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|)))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|))) |c_#memory_$Pointer$.base|) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (* |aws_mul_size_checked_aws_mul_u64_checked_~b#1| |aws_mul_size_checked_aws_mul_u64_checked_~a#1|)))))) is different from true [2021-11-16 21:45:13,134 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~b#1| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~a#1| Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 (select (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0))) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 (select (select |c_#memory_$Pointer$.offset| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0)))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 (* |aws_mul_size_checked_aws_mul_u64_checked_~b#1| |aws_mul_size_checked_aws_mul_u64_checked_~a#1|)))))) is different from true [2021-11-16 21:45:13,688 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-16 21:45:13,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 83 [2021-11-16 21:45:13,838 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-16 21:45:13,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 81 [2021-11-16 21:45:13,976 INFO L354 Elim1Store]: treesize reduction 23, result has 45.2 percent of original size [2021-11-16 21:45:13,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 90 [2021-11-16 21:46:24,874 INFO L354 Elim1Store]: treesize reduction 25, result has 3.8 percent of original size [2021-11-16 21:46:24,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 91 treesize of output 82 [2021-11-16 21:46:24,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 66 [2021-11-16 21:46:24,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2021-11-16 21:46:25,336 INFO L134 CoverageAnalysis]: Checked inductivity of 723 backedges. 503 proven. 12 refuted. 0 times theorem prover too weak. 192 trivial. 16 not checked. [2021-11-16 21:46:25,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 21:46:29,354 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_aws_mul_size_checked_aws_mul_u64_checked_~b#1_168| Int) (v_DerPreprocessor_8 Int) (v_DerPreprocessor_7 Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_173| Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~a#1_168| Int)) (let ((.cse0 (+ 32 c_aws_array_list_length_~list.offset))) (or (not (= (select (select (store |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_173| (store (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_173|) 0 v_DerPreprocessor_8)) c_aws_array_list_length_~list.base) .cse0) 0)) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_173| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_173|) 0 v_DerPreprocessor_7)) c_aws_array_list_length_~list.base) .cse0) 0)) (not (= (mod (select (select (store |c_#memory_int| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_173| (store (select |c_#memory_int| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_173|) 0 (* |v_aws_mul_size_checked_aws_mul_u64_checked_~a#1_168| |v_aws_mul_size_checked_aws_mul_u64_checked_~b#1_168|))) c_aws_array_list_length_~list.base) (+ 8 c_aws_array_list_length_~list.offset)) 18446744073709551616) 0))))) is different from false [2021-11-16 21:46:29,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:46:29,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89901521] [2021-11-16 21:46:29,361 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 21:46:29,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296004592] [2021-11-16 21:46:29,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296004592] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 21:46:29,361 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-16 21:46:29,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2021-11-16 21:46:29,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632573592] [2021-11-16 21:46:29,361 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-16 21:46:29,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-16 21:46:29,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:46:29,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-16 21:46:29,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1089, Unknown=17, NotChecked=204, Total=1406 [2021-11-16 21:46:29,364 INFO L87 Difference]: Start difference. First operand 664 states and 1025 transitions. Second operand has 37 states, 32 states have (on average 5.09375) internal successors, (163), 32 states have internal predecessors, (163), 13 states have call successors, (42), 6 states have call predecessors, (42), 10 states have return successors, (40), 12 states have call predecessors, (40), 13 states have call successors, (40) [2021-11-16 21:46:31,118 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 21:46:34,005 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 21:46:36,069 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 21:46:37,633 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 21:46:38,953 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 21:46:40,996 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 21:49:01,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:49:01,684 INFO L93 Difference]: Finished difference Result 1584 states and 2618 transitions. [2021-11-16 21:49:01,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-16 21:49:01,685 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 32 states have (on average 5.09375) internal successors, (163), 32 states have internal predecessors, (163), 13 states have call successors, (42), 6 states have call predecessors, (42), 10 states have return successors, (40), 12 states have call predecessors, (40), 13 states have call successors, (40) Word has length 340 [2021-11-16 21:49:01,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:49:01,691 INFO L225 Difference]: With dead ends: 1584 [2021-11-16 21:49:01,691 INFO L226 Difference]: Without dead ends: 984 [2021-11-16 21:49:01,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 339 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 152.2s TimeCoverageRelationStatistics Valid=250, Invalid=3494, Unknown=50, NotChecked=366, Total=4160 [2021-11-16 21:49:01,693 INFO L933 BasicCegarLoop]: 816 mSDtfsCounter, 324 mSDsluCounter, 12987 mSDsCounter, 0 mSdLazyCounter, 8986 mSolverCounterSat, 289 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 13803 SdHoareTripleChecker+Invalid, 18770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 8986 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 9492 IncrementalHoareTripleChecker+Unchecked, 62.3s IncrementalHoareTripleChecker+Time [2021-11-16 21:49:01,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [404 Valid, 13803 Invalid, 18770 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [289 Valid, 8986 Invalid, 3 Unknown, 9492 Unchecked, 62.3s Time] [2021-11-16 21:49:01,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2021-11-16 21:49:01,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 702. [2021-11-16 21:49:01,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 442 states have (on average 1.2036199095022624) internal successors, (532), 448 states have internal predecessors, (532), 208 states have call successors, (208), 39 states have call predecessors, (208), 50 states have return successors, (412), 214 states have call predecessors, (412), 206 states have call successors, (412) [2021-11-16 21:49:01,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1152 transitions. [2021-11-16 21:49:01,733 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1152 transitions. Word has length 340 [2021-11-16 21:49:01,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:49:01,734 INFO L470 AbstractCegarLoop]: Abstraction has 702 states and 1152 transitions. [2021-11-16 21:49:01,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 32 states have (on average 5.09375) internal successors, (163), 32 states have internal predecessors, (163), 13 states have call successors, (42), 6 states have call predecessors, (42), 10 states have return successors, (40), 12 states have call predecessors, (40), 13 states have call successors, (40) [2021-11-16 21:49:01,734 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1152 transitions. [2021-11-16 21:49:01,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2021-11-16 21:49:01,736 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:49:01,736 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 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, 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] [2021-11-16 21:49:01,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-11-16 21:49:01,941 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,SelfDestructingSolverStorable26 [2021-11-16 21:49:01,941 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:49:01,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:49:01,942 INFO L85 PathProgramCache]: Analyzing trace with hash -674789270, now seen corresponding path program 3 times [2021-11-16 21:49:01,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:49:01,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511355327] [2021-11-16 21:49:01,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:49:01,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:49:01,970 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 21:49:01,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1616925] [2021-11-16 21:49:01,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-16 21:49:01,970 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:49:01,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:49:01,971 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) [2021-11-16 21:49:01,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-16 21:49:04,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-11-16 21:49:04,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-16 21:49:04,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 2495 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-16 21:49:04,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:49:05,809 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 377 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2021-11-16 21:49:05,809 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 21:49:05,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:49:05,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511355327] [2021-11-16 21:49:05,809 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 21:49:05,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616925] [2021-11-16 21:49:05,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616925] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:49:05,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 21:49:05,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-16 21:49:05,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166216075] [2021-11-16 21:49:05,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:49:05,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-16 21:49:05,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:49:05,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-16 21:49:05,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-11-16 21:49:05,811 INFO L87 Difference]: Start difference. First operand 702 states and 1152 transitions. Second operand has 12 states, 11 states have (on average 11.545454545454545) internal successors, (127), 9 states have internal predecessors, (127), 3 states have call successors, (36), 2 states have call predecessors, (36), 6 states have return successors, (35), 5 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-16 21:49:09,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:49:09,236 INFO L93 Difference]: Finished difference Result 1326 states and 2190 transitions. [2021-11-16 21:49:09,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-16 21:49:09,237 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 11.545454545454545) internal successors, (127), 9 states have internal predecessors, (127), 3 states have call successors, (36), 2 states have call predecessors, (36), 6 states have return successors, (35), 5 states have call predecessors, (35), 3 states have call successors, (35) Word has length 350 [2021-11-16 21:49:09,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:49:09,242 INFO L225 Difference]: With dead ends: 1326 [2021-11-16 21:49:09,242 INFO L226 Difference]: Without dead ends: 702 [2021-11-16 21:49:09,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-16 21:49:09,244 INFO L933 BasicCegarLoop]: 755 mSDtfsCounter, 11 mSDsluCounter, 7434 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 8189 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-16 21:49:09,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 8189 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-16 21:49:09,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2021-11-16 21:49:09,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 702. [2021-11-16 21:49:09,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 442 states have (on average 1.2036199095022624) internal successors, (532), 448 states have internal predecessors, (532), 208 states have call successors, (208), 39 states have call predecessors, (208), 50 states have return successors, (408), 214 states have call predecessors, (408), 206 states have call successors, (408) [2021-11-16 21:49:09,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1148 transitions. [2021-11-16 21:49:09,274 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1148 transitions. Word has length 350 [2021-11-16 21:49:09,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:49:09,275 INFO L470 AbstractCegarLoop]: Abstraction has 702 states and 1148 transitions. [2021-11-16 21:49:09,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 11.545454545454545) internal successors, (127), 9 states have internal predecessors, (127), 3 states have call successors, (36), 2 states have call predecessors, (36), 6 states have return successors, (35), 5 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-16 21:49:09,275 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1148 transitions. [2021-11-16 21:49:09,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2021-11-16 21:49:09,277 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:49:09,277 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 4, 4, 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, 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] [2021-11-16 21:49:09,291 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2021-11-16 21:49:09,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-16 21:49:09,490 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:49:09,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:49:09,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1682583818, now seen corresponding path program 4 times [2021-11-16 21:49:09,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:49:09,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348836922] [2021-11-16 21:49:09,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:49:09,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:49:09,518 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 21:49:09,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [18325678] [2021-11-16 21:49:09,518 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-16 21:49:09,518 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:49:09,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:49:09,519 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:49:09,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-16 21:49:10,045 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-16 21:49:10,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-16 21:49:10,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 3492 conjuncts, 110 conjunts are in the unsatisfiable core [2021-11-16 21:49:10,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:49:10,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-16 21:49:11,853 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-16 21:49:11,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2021-11-16 21:49:14,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 21:49:14,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 21:49:14,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 21:49:14,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 29 [2021-11-16 21:49:14,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 21:49:14,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 21:49:14,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 21:49:14,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 29 [2021-11-16 21:49:17,773 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~b#1| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~a#1| Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| (* |aws_mul_size_checked_aws_mul_u64_checked_~b#1| |aws_mul_size_checked_aws_mul_u64_checked_~a#1|))))) is different from true [2021-11-16 21:49:27,956 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~b#1| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~a#1| Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| (* |aws_mul_size_checked_aws_mul_u64_checked_~b#1| |aws_mul_size_checked_aws_mul_u64_checked_~a#1|))))) is different from true [2021-11-16 21:49:46,118 INFO L134 CoverageAnalysis]: Checked inductivity of 713 backedges. 331 proven. 22 refuted. 0 times theorem prover too weak. 357 trivial. 3 not checked. [2021-11-16 21:49:46,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 21:49:51,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:49:51,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348836922] [2021-11-16 21:49:51,550 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 21:49:51,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18325678] [2021-11-16 21:49:51,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18325678] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 21:49:51,550 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-16 21:49:51,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2021-11-16 21:49:51,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935319114] [2021-11-16 21:49:51,550 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-16 21:49:51,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-16 21:49:51,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:49:51,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-16 21:49:51,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=935, Unknown=7, NotChecked=126, Total=1190 [2021-11-16 21:49:51,552 INFO L87 Difference]: Start difference. First operand 702 states and 1148 transitions. Second operand has 34 states, 31 states have (on average 4.838709677419355) internal successors, (150), 29 states have internal predecessors, (150), 13 states have call successors, (41), 7 states have call predecessors, (41), 11 states have return successors, (38), 12 states have call predecessors, (38), 13 states have call successors, (38) [2021-11-16 21:49:53,841 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 21:49:59,051 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~b#1| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~a#1| Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| (* |aws_mul_size_checked_aws_mul_u64_checked_~b#1| |aws_mul_size_checked_aws_mul_u64_checked_~a#1|))))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~b#1| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~a#1| Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| (* |aws_mul_size_checked_aws_mul_u64_checked_~b#1| |aws_mul_size_checked_aws_mul_u64_checked_~a#1|)))))) is different from true [2021-11-16 21:50:09,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:50:09,275 INFO L93 Difference]: Finished difference Result 1434 states and 2358 transitions. [2021-11-16 21:50:09,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-16 21:50:09,275 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 31 states have (on average 4.838709677419355) internal successors, (150), 29 states have internal predecessors, (150), 13 states have call successors, (41), 7 states have call predecessors, (41), 11 states have return successors, (38), 12 states have call predecessors, (38), 13 states have call successors, (38) Word has length 338 [2021-11-16 21:50:09,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:50:09,280 INFO L225 Difference]: With dead ends: 1434 [2021-11-16 21:50:09,280 INFO L226 Difference]: Without dead ends: 778 [2021-11-16 21:50:09,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 513 SyntacticMatches, 12 SemanticMatches, 37 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 31.4s TimeCoverageRelationStatistics Valid=143, Invalid=1121, Unknown=8, NotChecked=210, Total=1482 [2021-11-16 21:50:09,282 INFO L933 BasicCegarLoop]: 741 mSDtfsCounter, 68 mSDsluCounter, 6954 mSDsCounter, 0 mSdLazyCounter, 2155 mSolverCounterSat, 624 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 7695 SdHoareTripleChecker+Invalid, 7584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 624 IncrementalHoareTripleChecker+Valid, 2155 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 4804 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2021-11-16 21:50:09,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 7695 Invalid, 7584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [624 Valid, 2155 Invalid, 1 Unknown, 4804 Unchecked, 14.9s Time] [2021-11-16 21:50:09,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2021-11-16 21:50:09,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 760. [2021-11-16 21:50:09,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 485 states have (on average 1.2041237113402061) internal successors, (584), 494 states have internal predecessors, (584), 216 states have call successors, (216), 43 states have call predecessors, (216), 57 states have return successors, (449), 222 states have call predecessors, (449), 214 states have call successors, (449) [2021-11-16 21:50:09,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1249 transitions. [2021-11-16 21:50:09,317 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1249 transitions. Word has length 338 [2021-11-16 21:50:09,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:50:09,317 INFO L470 AbstractCegarLoop]: Abstraction has 760 states and 1249 transitions. [2021-11-16 21:50:09,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 31 states have (on average 4.838709677419355) internal successors, (150), 29 states have internal predecessors, (150), 13 states have call successors, (41), 7 states have call predecessors, (41), 11 states have return successors, (38), 12 states have call predecessors, (38), 13 states have call successors, (38) [2021-11-16 21:50:09,318 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1249 transitions. [2021-11-16 21:50:09,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2021-11-16 21:50:09,320 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:50:09,320 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:50:09,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-11-16 21:50:09,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-16 21:50:09,541 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:50:09,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:50:09,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1438466489, now seen corresponding path program 1 times [2021-11-16 21:50:09,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:50:09,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916169514] [2021-11-16 21:50:09,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:50:09,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:50:09,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:50:09,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:50:09,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:50:09,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-16 21:50:09,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:50:09,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-16 21:50:09,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:50:09,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-16 21:50:09,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:50:09,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-16 21:50:09,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:50:09,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-16 21:50:09,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:50:09,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-16 21:50:09,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:50:09,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-16 21:50:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:50:09,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-16 21:50:09,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:50:09,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-16 21:50:09,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:50:09,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916169514] [2021-11-16 21:50:09,938 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-16 21:50:09,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133518209] [2021-11-16 21:50:09,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:50:09,938 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:50:09,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:50:09,939 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:50:09,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-11-16 21:50:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:50:10,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 3473 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-16 21:50:10,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:50:12,147 INFO L134 CoverageAnalysis]: Checked inductivity of 713 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 623 trivial. 0 not checked. [2021-11-16 21:50:12,147 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 21:50:12,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133518209] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:50:12,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 21:50:12,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-16 21:50:12,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154825855] [2021-11-16 21:50:12,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:50:12,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-16 21:50:12,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:50:12,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-16 21:50:12,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-16 21:50:12,150 INFO L87 Difference]: Start difference. First operand 760 states and 1249 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-16 21:50:12,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:50:12,201 INFO L93 Difference]: Finished difference Result 1485 states and 2445 transitions. [2021-11-16 21:50:12,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-16 21:50:12,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 332 [2021-11-16 21:50:12,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:50:12,206 INFO L225 Difference]: With dead ends: 1485 [2021-11-16 21:50:12,206 INFO L226 Difference]: Without dead ends: 747 [2021-11-16 21:50:12,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-16 21:50:12,208 INFO L933 BasicCegarLoop]: 760 mSDtfsCounter, 0 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1515 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 [2021-11-16 21:50:12,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1515 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-16 21:50:12,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2021-11-16 21:50:12,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 747. [2021-11-16 21:50:12,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 478 states have (on average 1.205020920502092) internal successors, (576), 486 states have internal predecessors, (576), 212 states have call successors, (212), 42 states have call predecessors, (212), 55 states have return successors, (438), 218 states have call predecessors, (438), 210 states have call successors, (438) [2021-11-16 21:50:12,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1226 transitions. [2021-11-16 21:50:12,244 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1226 transitions. Word has length 332 [2021-11-16 21:50:12,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:50:12,245 INFO L470 AbstractCegarLoop]: Abstraction has 747 states and 1226 transitions. [2021-11-16 21:50:12,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-16 21:50:12,245 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1226 transitions. [2021-11-16 21:50:12,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2021-11-16 21:50:12,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:50:12,248 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1] [2021-11-16 21:50:12,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-11-16 21:50:12,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:50:12,464 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:50:12,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:50:12,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1159794925, now seen corresponding path program 2 times [2021-11-16 21:50:12,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:50:12,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562537027] [2021-11-16 21:50:12,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:50:12,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:50:12,503 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 21:50:12,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1885475365] [2021-11-16 21:50:12,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-16 21:50:12,503 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:50:12,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:50:12,504 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:50:12,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-11-16 21:50:13,539 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-16 21:50:13,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-16 21:50:13,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 3515 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-16 21:50:13,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:50:15,893 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 422 proven. 11 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2021-11-16 21:50:15,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 21:50:22,570 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 82 proven. 58 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2021-11-16 21:50:22,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:50:22,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562537027] [2021-11-16 21:50:22,571 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 21:50:22,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885475365] [2021-11-16 21:50:22,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885475365] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-16 21:50:22,571 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-16 21:50:22,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 27 [2021-11-16 21:50:22,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873518776] [2021-11-16 21:50:22,572 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-16 21:50:22,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-16 21:50:22,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:50:22,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-16 21:50:22,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2021-11-16 21:50:22,573 INFO L87 Difference]: Start difference. First operand 747 states and 1226 transitions. Second operand has 27 states, 24 states have (on average 6.958333333333333) internal successors, (167), 20 states have internal predecessors, (167), 7 states have call successors, (48), 2 states have call predecessors, (48), 10 states have return successors, (50), 11 states have call predecessors, (50), 7 states have call successors, (50) [2021-11-16 21:50:28,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:50:28,788 INFO L93 Difference]: Finished difference Result 1490 states and 2456 transitions. [2021-11-16 21:50:28,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-16 21:50:28,788 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 6.958333333333333) internal successors, (167), 20 states have internal predecessors, (167), 7 states have call successors, (48), 2 states have call predecessors, (48), 10 states have return successors, (50), 11 states have call predecessors, (50), 7 states have call successors, (50) Word has length 344 [2021-11-16 21:50:28,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:50:28,798 INFO L225 Difference]: With dead ends: 1490 [2021-11-16 21:50:28,798 INFO L226 Difference]: Without dead ends: 810 [2021-11-16 21:50:28,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 691 GetRequests, 660 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=93, Invalid=899, Unknown=0, NotChecked=0, Total=992 [2021-11-16 21:50:28,801 INFO L933 BasicCegarLoop]: 767 mSDtfsCounter, 27 mSDsluCounter, 12900 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 13667 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-16 21:50:28,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 13667 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2021-11-16 21:50:28,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2021-11-16 21:50:28,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 763. [2021-11-16 21:50:28,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 493 states have (on average 1.204868154158215) internal successors, (594), 499 states have internal predecessors, (594), 213 states have call successors, (213), 42 states have call predecessors, (213), 55 states have return successors, (404), 221 states have call predecessors, (404), 211 states have call successors, (404) [2021-11-16 21:50:28,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 1211 transitions. [2021-11-16 21:50:28,835 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 1211 transitions. Word has length 344 [2021-11-16 21:50:28,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:50:28,836 INFO L470 AbstractCegarLoop]: Abstraction has 763 states and 1211 transitions. [2021-11-16 21:50:28,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 6.958333333333333) internal successors, (167), 20 states have internal predecessors, (167), 7 states have call successors, (48), 2 states have call predecessors, (48), 10 states have return successors, (50), 11 states have call predecessors, (50), 7 states have call successors, (50) [2021-11-16 21:50:28,836 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 1211 transitions. [2021-11-16 21:50:28,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2021-11-16 21:50:28,838 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:50:28,838 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 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, 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] [2021-11-16 21:50:28,863 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2021-11-16 21:50:29,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:50:29,057 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:50:29,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:50:29,058 INFO L85 PathProgramCache]: Analyzing trace with hash -491901566, now seen corresponding path program 2 times [2021-11-16 21:50:29,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:50:29,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844628375] [2021-11-16 21:50:29,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:50:29,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:50:29,092 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 21:50:29,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [586245700] [2021-11-16 21:50:29,093 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-16 21:50:29,094 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:50:29,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:50:29,095 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:50:29,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-16 21:50:30,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-16 21:50:30,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-16 21:50:30,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 3499 conjuncts, 177 conjunts are in the unsatisfiable core [2021-11-16 21:50:30,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:50:35,788 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.offset| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|)))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|))) |c_#memory_$Pointer$.base|))) is different from true [2021-11-16 21:50:38,095 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 (select (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0))) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 (select (select |c_#memory_$Pointer$.offset| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0)))))) is different from true [2021-11-16 21:50:38,471 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-16 21:50:38,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 58 [2021-11-16 21:50:38,623 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-16 21:50:38,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 56 [2021-11-16 21:50:44,400 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-11-16 21:50:44,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 52 [2021-11-16 21:50:44,473 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-11-16 21:50:44,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2021-11-16 21:50:44,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2021-11-16 21:51:42,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 21:51:42,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 46 [2021-11-16 21:51:42,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 21:51:43,798 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 444 proven. 63 refuted. 12 times theorem prover too weak. 179 trivial. 19 not checked. [2021-11-16 21:51:43,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 21:51:50,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:51:50,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844628375] [2021-11-16 21:51:50,981 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 21:51:50,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586245700] [2021-11-16 21:51:50,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586245700] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 21:51:50,981 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-16 21:51:50,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2021-11-16 21:51:50,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606284865] [2021-11-16 21:51:50,981 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-16 21:51:50,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-16 21:51:50,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:51:50,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-16 21:51:50,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1006, Unknown=24, NotChecked=130, Total=1260 [2021-11-16 21:51:50,982 INFO L87 Difference]: Start difference. First operand 763 states and 1211 transitions. Second operand has 35 states, 31 states have (on average 5.451612903225806) internal successors, (169), 31 states have internal predecessors, (169), 16 states have call successors, (44), 6 states have call predecessors, (44), 11 states have return successors, (41), 14 states have call predecessors, (41), 16 states have call successors, (41) [2021-11-16 21:54:17,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:54:17,810 INFO L93 Difference]: Finished difference Result 2024 states and 3386 transitions. [2021-11-16 21:54:17,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-11-16 21:54:17,810 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 31 states have (on average 5.451612903225806) internal successors, (169), 31 states have internal predecessors, (169), 16 states have call successors, (44), 6 states have call predecessors, (44), 11 states have return successors, (41), 14 states have call predecessors, (41), 16 states have call successors, (41) Word has length 338 [2021-11-16 21:54:17,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:54:17,818 INFO L225 Difference]: With dead ends: 2024 [2021-11-16 21:54:17,819 INFO L226 Difference]: Without dead ends: 1289 [2021-11-16 21:54:17,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 408 SyntacticMatches, 7 SemanticMatches, 61 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 143.3s TimeCoverageRelationStatistics Valid=291, Invalid=3330, Unknown=47, NotChecked=238, Total=3906 [2021-11-16 21:54:17,823 INFO L933 BasicCegarLoop]: 765 mSDtfsCounter, 493 mSDsluCounter, 10412 mSDsCounter, 0 mSdLazyCounter, 8906 mSolverCounterSat, 629 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 11177 SdHoareTripleChecker+Invalid, 16244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 629 IncrementalHoareTripleChecker+Valid, 8906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6709 IncrementalHoareTripleChecker+Unchecked, 69.9s IncrementalHoareTripleChecker+Time [2021-11-16 21:54:17,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [576 Valid, 11177 Invalid, 16244 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [629 Valid, 8906 Invalid, 0 Unknown, 6709 Unchecked, 69.9s Time] [2021-11-16 21:54:17,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2021-11-16 21:54:17,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 940. [2021-11-16 21:54:17,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 634 states have (on average 1.2003154574132493) internal successors, (761), 645 states have internal predecessors, (761), 231 states have call successors, (231), 51 states have call predecessors, (231), 73 states have return successors, (554), 243 states have call predecessors, (554), 229 states have call successors, (554) [2021-11-16 21:54:17,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1546 transitions. [2021-11-16 21:54:17,893 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1546 transitions. Word has length 338 [2021-11-16 21:54:17,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:54:17,894 INFO L470 AbstractCegarLoop]: Abstraction has 940 states and 1546 transitions. [2021-11-16 21:54:17,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 31 states have (on average 5.451612903225806) internal successors, (169), 31 states have internal predecessors, (169), 16 states have call successors, (44), 6 states have call predecessors, (44), 11 states have return successors, (41), 14 states have call predecessors, (41), 16 states have call successors, (41) [2021-11-16 21:54:17,894 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1546 transitions. [2021-11-16 21:54:17,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2021-11-16 21:54:17,898 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:54:17,898 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 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, 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] [2021-11-16 21:54:17,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-11-16 21:54:18,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:54:18,115 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:54:18,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:54:18,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1042579128, now seen corresponding path program 1 times [2021-11-16 21:54:18,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:54:18,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902965745] [2021-11-16 21:54:18,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:54:18,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:54:18,176 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 21:54:18,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1155307824] [2021-11-16 21:54:18,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:54:18,176 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:54:18,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:54:18,177 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:54:18,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-11-16 21:54:18,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:54:18,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 3504 conjuncts, 241 conjunts are in the unsatisfiable core [2021-11-16 21:54:18,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:54:19,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-16 21:54:31,314 INFO L354 Elim1Store]: treesize reduction 35, result has 37.5 percent of original size [2021-11-16 21:54:31,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 63 treesize of output 69 [2021-11-16 21:54:31,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 48 [2021-11-16 21:54:31,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 33 [2021-11-16 21:54:44,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2021-11-16 21:54:44,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2021-11-16 21:54:44,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 Killed by 15