./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_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 1d3eb02e894c2acef7732d0e57c112cc2c197f8f03d7c13822f169fbed4dc5e5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 11:34:52,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 11:34:52,661 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 11:34:52,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 11:34:52,692 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 11:34:52,693 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 11:34:52,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 11:34:52,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 11:34:52,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 11:34:52,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 11:34:52,706 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 11:34:52,707 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 11:34:52,707 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 11:34:52,708 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 11:34:52,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 11:34:52,709 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 11:34:52,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 11:34:52,711 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 11:34:52,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 11:34:52,713 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 11:34:52,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 11:34:52,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 11:34:52,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 11:34:52,716 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 11:34:52,718 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 11:34:52,718 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 11:34:52,719 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 11:34:52,719 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 11:34:52,725 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 11:34:52,726 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 11:34:52,726 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 11:34:52,726 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 11:34:52,727 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 11:34:52,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 11:34:52,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 11:34:52,729 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 11:34:52,731 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 11:34:52,731 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 11:34:52,731 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 11:34:52,732 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 11:34:52,733 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 11:34:52,734 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 11:34:52,754 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 11:34:52,755 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 11:34:52,755 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 11:34:52,755 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 11:34:52,756 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 11:34:52,757 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 11:34:52,757 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 11:34:52,757 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 11:34:52,757 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 11:34:52,757 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 11:34:52,758 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 11:34:52,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 11:34:52,758 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 11:34:52,758 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 11:34:52,759 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 11:34:52,759 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 11:34:52,759 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 11:34:52,759 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 11:34:52,759 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 11:34:52,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 11:34:52,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 11:34:52,760 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 11:34:52,760 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 11:34:52,760 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 11:34:52,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 11:34:52,761 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 11:34:52,761 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 11:34:52,762 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 11:34:52,762 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 11:34:52,762 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d3eb02e894c2acef7732d0e57c112cc2c197f8f03d7c13822f169fbed4dc5e5 [2021-11-06 11:34:52,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 11:34:53,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 11:34:53,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 11:34:53,003 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 11:34:53,004 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 11:34:53,004 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i [2021-11-06 11:34:53,057 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3dc2f1a50/5f5cfe41fcf04a6f82b610270c1d7c41/FLAG5ecf9fb22 [2021-11-06 11:34:53,586 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 11:34:53,587 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i [2021-11-06 11:34:53,617 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3dc2f1a50/5f5cfe41fcf04a6f82b610270c1d7c41/FLAG5ecf9fb22 [2021-11-06 11:34:53,784 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3dc2f1a50/5f5cfe41fcf04a6f82b610270c1d7c41 [2021-11-06 11:34:53,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 11:34:53,790 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 11:34:53,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 11:34:53,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 11:34:53,794 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 11:34:53,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:34:53" (1/1) ... [2021-11-06 11:34:53,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ea75e56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:34:53, skipping insertion in model container [2021-11-06 11:34:53,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:34:53" (1/1) ... [2021-11-06 11:34:53,800 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 11:34:53,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 11:34:54,064 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4504,4517] [2021-11-06 11:34:54,069 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4564,4577] [2021-11-06 11:34:54,083 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-06 11:34:54,087 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-06 11:34:54,559 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:54,560 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:54,560 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:54,561 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:54,562 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:54,570 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:54,570 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:54,572 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:54,573 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:54,574 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:54,575 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:54,575 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:54,575 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:54,793 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-06 11:34:54,794 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-06 11:34:54,795 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-06 11:34:54,796 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-06 11:34:54,796 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-06 11:34:54,797 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-06 11:34:54,797 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-06 11:34:54,798 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-06 11:34:54,798 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-06 11:34:54,799 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-06 11:34:54,887 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-06 11:34:54,900 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:54,900 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:54,903 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:54,906 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:54,937 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:54,942 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:54,943 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:54,943 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:54,943 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:54,944 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:54,944 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:54,945 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:54,945 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:54,945 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:54,945 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:54,946 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:54,946 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:54,948 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:54,949 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:54,949 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:54,949 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:54,951 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:54,951 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:54,958 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:54,963 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:54,963 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:54,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 11:34:55,001 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 11:34:55,020 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4504,4517] [2021-11-06 11:34:55,021 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4564,4577] [2021-11-06 11:34:55,025 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-06 11:34:55,027 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-06 11:34:55,083 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:55,083 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:55,083 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:55,084 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:55,084 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:55,088 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:55,088 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:55,089 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:55,090 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:55,091 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:55,092 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:55,092 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:55,092 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:55,117 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-06 11:34:55,117 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-06 11:34:55,118 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-06 11:34:55,118 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-06 11:34:55,119 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-06 11:34:55,119 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-06 11:34:55,119 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-06 11:34:55,119 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-06 11:34:55,120 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-06 11:34:55,120 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-06 11:34:55,143 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-06 11:34:55,156 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:55,157 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:55,158 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:55,162 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:55,183 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:55,184 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:55,184 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:55,185 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:55,185 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:55,186 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:55,186 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:55,186 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:55,187 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:55,187 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:55,187 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:55,188 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:55,188 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:55,190 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:55,190 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:55,190 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:55,190 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:55,192 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:55,192 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:55,198 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:55,199 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:55,199 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:34:55,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 11:34:55,324 INFO L208 MainTranslator]: Completed translation [2021-11-06 11:34:55,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:34:55 WrapperNode [2021-11-06 11:34:55,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 11:34:55,326 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 11:34:55,326 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 11:34:55,326 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 11:34:55,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:34:55" (1/1) ... [2021-11-06 11:34:55,413 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:34:55" (1/1) ... [2021-11-06 11:34:55,585 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 11:34:55,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 11:34:55,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 11:34:55,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 11:34:55,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:34:55" (1/1) ... [2021-11-06 11:34:55,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:34:55" (1/1) ... [2021-11-06 11:34:55,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:34:55" (1/1) ... [2021-11-06 11:34:55,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:34:55" (1/1) ... [2021-11-06 11:34:55,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:34:55" (1/1) ... [2021-11-06 11:34:55,735 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:34:55" (1/1) ... [2021-11-06 11:34:55,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:34:55" (1/1) ... [2021-11-06 11:34:55,780 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 11:34:55,782 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 11:34:55,782 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 11:34:55,782 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 11:34:55,783 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:34:55" (1/1) ... [2021-11-06 11:34:55,789 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 11:34:55,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:34:55,810 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) [2021-11-06 11:34:55,831 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 [2021-11-06 11:34:55,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 11:34:55,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 11:34:55,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 11:34:55,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 11:34:55,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 11:34:55,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 11:34:55,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 11:34:55,845 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-06 11:34:55,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 11:34:55,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 11:34:55,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 11:34:55,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 11:35:07,294 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 11:35:07,294 INFO L299 CfgBuilder]: Removed 924 assume(true) statements. [2021-11-06 11:35:07,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:35:07 BoogieIcfgContainer [2021-11-06 11:35:07,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 11:35:07,299 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 11:35:07,300 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 11:35:07,302 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 11:35:07,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:34:53" (1/3) ... [2021-11-06 11:35:07,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@731f18f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:35:07, skipping insertion in model container [2021-11-06 11:35:07,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:34:55" (2/3) ... [2021-11-06 11:35:07,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@731f18f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:35:07, skipping insertion in model container [2021-11-06 11:35:07,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:35:07" (3/3) ... [2021-11-06 11:35:07,305 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_down_harness.i [2021-11-06 11:35:07,313 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 11:35:07,314 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2021-11-06 11:35:07,364 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 11:35:07,369 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 [2021-11-06 11:35:07,369 INFO L340 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2021-11-06 11:35:07,393 INFO L276 IsEmpty]: Start isEmpty. Operand has 1139 states, 1108 states have (on average 1.4214801444043321) internal successors, (1575), 1138 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:35:07,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-06 11:35:07,400 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:35:07,401 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:35:07,401 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-06 11:35:07,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:35:07,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1715157979, now seen corresponding path program 1 times [2021-11-06 11:35:07,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:35:07,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282505072] [2021-11-06 11:35:07,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:35:07,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:35:07,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:35:07,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:35:07,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:35:07,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282505072] [2021-11-06 11:35:07,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282505072] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:35:07,977 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:35:07,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 11:35:07,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653297730] [2021-11-06 11:35:07,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 11:35:07,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:35:07,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 11:35:07,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 11:35:07,995 INFO L87 Difference]: Start difference. First operand has 1139 states, 1108 states have (on average 1.4214801444043321) internal successors, (1575), 1138 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:35:08,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:35:08,059 INFO L93 Difference]: Finished difference Result 2266 states and 3137 transitions. [2021-11-06 11:35:08,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 11:35:08,061 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-06 11:35:08,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:35:08,076 INFO L225 Difference]: With dead ends: 2266 [2021-11-06 11:35:08,076 INFO L226 Difference]: Without dead ends: 1134 [2021-11-06 11:35:08,082 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 11:35:08,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2021-11-06 11:35:08,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1134. [2021-11-06 11:35:08,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1134 states, 1104 states have (on average 1.3206521739130435) internal successors, (1458), 1133 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:35:08,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 1458 transitions. [2021-11-06 11:35:08,157 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 1458 transitions. Word has length 53 [2021-11-06 11:35:08,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:35:08,157 INFO L470 AbstractCegarLoop]: Abstraction has 1134 states and 1458 transitions. [2021-11-06 11:35:08,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:35:08,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 1458 transitions. [2021-11-06 11:35:08,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-06 11:35:08,160 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:35:08,160 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:35:08,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 11:35:08,161 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-06 11:35:08,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:35:08,165 INFO L85 PathProgramCache]: Analyzing trace with hash -799846195, now seen corresponding path program 1 times [2021-11-06 11:35:08,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:35:08,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198629834] [2021-11-06 11:35:08,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:35:08,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:35:08,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:35:08,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:35:08,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:35:08,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198629834] [2021-11-06 11:35:08,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198629834] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:35:08,388 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:35:08,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 11:35:08,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864359579] [2021-11-06 11:35:08,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 11:35:08,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:35:08,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 11:35:08,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 11:35:08,393 INFO L87 Difference]: Start difference. First operand 1134 states and 1458 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:35:08,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:35:08,464 INFO L93 Difference]: Finished difference Result 2248 states and 2895 transitions. [2021-11-06 11:35:08,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 11:35:08,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-06 11:35:08,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:35:08,468 INFO L225 Difference]: With dead ends: 2248 [2021-11-06 11:35:08,468 INFO L226 Difference]: Without dead ends: 1136 [2021-11-06 11:35:08,470 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 11:35:08,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1136 states. [2021-11-06 11:35:08,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 1136. [2021-11-06 11:35:08,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1106 states have (on average 1.3200723327305606) internal successors, (1460), 1135 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:35:08,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1460 transitions. [2021-11-06 11:35:08,492 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1460 transitions. Word has length 53 [2021-11-06 11:35:08,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:35:08,493 INFO L470 AbstractCegarLoop]: Abstraction has 1136 states and 1460 transitions. [2021-11-06 11:35:08,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:35:08,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1460 transitions. [2021-11-06 11:35:08,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-06 11:35:08,499 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:35:08,499 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:35:08,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 11:35:08,500 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-06 11:35:08,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:35:08,501 INFO L85 PathProgramCache]: Analyzing trace with hash 571961103, now seen corresponding path program 1 times [2021-11-06 11:35:08,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:35:08,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886062722] [2021-11-06 11:35:08,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:35:08,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:35:08,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:35:08,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:35:08,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:35:08,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886062722] [2021-11-06 11:35:08,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886062722] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:35:08,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:35:08,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 11:35:08,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821331061] [2021-11-06 11:35:08,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 11:35:08,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:35:08,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 11:35:08,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:35:08,763 INFO L87 Difference]: Start difference. First operand 1136 states and 1460 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:35:08,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:35:08,946 INFO L93 Difference]: Finished difference Result 2503 states and 3212 transitions. [2021-11-06 11:35:08,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 11:35:08,947 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-06 11:35:08,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:35:08,950 INFO L225 Difference]: With dead ends: 2503 [2021-11-06 11:35:08,951 INFO L226 Difference]: Without dead ends: 1455 [2021-11-06 11:35:08,953 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:35:08,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2021-11-06 11:35:08,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1136. [2021-11-06 11:35:08,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1106 states have (on average 1.317359855334539) internal successors, (1457), 1135 states have internal predecessors, (1457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:35:08,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1457 transitions. [2021-11-06 11:35:08,976 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1457 transitions. Word has length 53 [2021-11-06 11:35:08,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:35:08,976 INFO L470 AbstractCegarLoop]: Abstraction has 1136 states and 1457 transitions. [2021-11-06 11:35:08,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:35:08,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1457 transitions. [2021-11-06 11:35:08,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-06 11:35:08,979 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:35:08,979 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:35:08,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 11:35:08,979 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-06 11:35:08,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:35:08,980 INFO L85 PathProgramCache]: Analyzing trace with hash 834729775, now seen corresponding path program 1 times [2021-11-06 11:35:08,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:35:08,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605217958] [2021-11-06 11:35:08,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:35:08,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:35:09,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:35:09,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:35:09,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:35:09,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605217958] [2021-11-06 11:35:09,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605217958] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:35:09,288 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:35:09,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 11:35:09,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063538579] [2021-11-06 11:35:09,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 11:35:09,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:35:09,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 11:35:09,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:35:09,289 INFO L87 Difference]: Start difference. First operand 1136 states and 1457 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:35:10,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:35:10,268 INFO L93 Difference]: Finished difference Result 2589 states and 3316 transitions. [2021-11-06 11:35:10,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 11:35:10,269 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-06 11:35:10,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:35:10,273 INFO L225 Difference]: With dead ends: 2589 [2021-11-06 11:35:10,273 INFO L226 Difference]: Without dead ends: 1509 [2021-11-06 11:35:10,274 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-06 11:35:10,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2021-11-06 11:35:10,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1136. [2021-11-06 11:35:10,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1106 states have (on average 1.3146473779385173) internal successors, (1454), 1135 states have internal predecessors, (1454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:35:10,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1454 transitions. [2021-11-06 11:35:10,295 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1454 transitions. Word has length 61 [2021-11-06 11:35:10,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:35:10,297 INFO L470 AbstractCegarLoop]: Abstraction has 1136 states and 1454 transitions. [2021-11-06 11:35:10,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:35:10,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1454 transitions. [2021-11-06 11:35:10,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-06 11:35:10,298 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:35:10,299 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:35:10,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 11:35:10,299 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-06 11:35:10,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:35:10,300 INFO L85 PathProgramCache]: Analyzing trace with hash -2045544657, now seen corresponding path program 1 times [2021-11-06 11:35:10,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:35:10,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720486922] [2021-11-06 11:35:10,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:35:10,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:35:10,362 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:35:10,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [525095636] [2021-11-06 11:35:10,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:35:10,363 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:35:10,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:35:10,364 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) [2021-11-06 11:35:10,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 11:35:11,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:35:11,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 2683 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-06 11:35:11,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:35:11,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:35:11,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:35:11,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720486922] [2021-11-06 11:35:11,680 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:35:11,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525095636] [2021-11-06 11:35:11,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525095636] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:35:11,680 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:35:11,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 11:35:11,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058164246] [2021-11-06 11:35:11,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 11:35:11,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:35:11,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 11:35:11,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 11:35:11,682 INFO L87 Difference]: Start difference. First operand 1136 states and 1454 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:35:12,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:35:12,846 INFO L93 Difference]: Finished difference Result 3297 states and 4202 transitions. [2021-11-06 11:35:12,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 11:35:12,847 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-06 11:35:12,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:35:12,852 INFO L225 Difference]: With dead ends: 3297 [2021-11-06 11:35:12,852 INFO L226 Difference]: Without dead ends: 2248 [2021-11-06 11:35:12,854 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-06 11:35:12,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2248 states. [2021-11-06 11:35:12,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2248 to 1136. [2021-11-06 11:35:12,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1106 states have (on average 1.3119349005424954) internal successors, (1451), 1135 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:35:12,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1451 transitions. [2021-11-06 11:35:12,882 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1451 transitions. Word has length 77 [2021-11-06 11:35:12,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:35:12,882 INFO L470 AbstractCegarLoop]: Abstraction has 1136 states and 1451 transitions. [2021-11-06 11:35:12,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:35:12,883 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1451 transitions. [2021-11-06 11:35:12,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-06 11:35:12,883 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:35:12,883 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:35:12,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-06 11:35:13,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:35:13,100 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-06 11:35:13,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:35:13,100 INFO L85 PathProgramCache]: Analyzing trace with hash 324665997, now seen corresponding path program 1 times [2021-11-06 11:35:13,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:35:13,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101142773] [2021-11-06 11:35:13,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:35:13,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:35:13,168 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:35:13,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [825453754] [2021-11-06 11:35:13,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:35:13,168 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:35:13,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:35:13,170 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) [2021-11-06 11:35:13,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 11:35:13,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:35:13,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 2788 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-06 11:35:13,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:35:14,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:35:14,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:35:14,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101142773] [2021-11-06 11:35:14,571 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:35:14,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825453754] [2021-11-06 11:35:14,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825453754] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:35:14,571 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:35:14,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 11:35:14,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109039024] [2021-11-06 11:35:14,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 11:35:14,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:35:14,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 11:35:14,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 11:35:14,574 INFO L87 Difference]: Start difference. First operand 1136 states and 1451 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:35:16,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:35:16,985 INFO L93 Difference]: Finished difference Result 3313 states and 4220 transitions. [2021-11-06 11:35:16,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 11:35:16,986 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-06 11:35:16,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:35:16,992 INFO L225 Difference]: With dead ends: 3313 [2021-11-06 11:35:16,992 INFO L226 Difference]: Without dead ends: 2248 [2021-11-06 11:35:16,994 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-11-06 11:35:16,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2248 states. [2021-11-06 11:35:17,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2248 to 1136. [2021-11-06 11:35:17,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1106 states have (on average 1.3092224231464737) internal successors, (1448), 1135 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:35:17,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1448 transitions. [2021-11-06 11:35:17,025 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1448 transitions. Word has length 101 [2021-11-06 11:35:17,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:35:17,025 INFO L470 AbstractCegarLoop]: Abstraction has 1136 states and 1448 transitions. [2021-11-06 11:35:17,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:35:17,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1448 transitions. [2021-11-06 11:35:17,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-06 11:35:17,026 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:35:17,026 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:35:17,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-06 11:35:17,239 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,SelfDestructingSolverStorable5 [2021-11-06 11:35:17,240 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-06 11:35:17,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:35:17,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1191929715, now seen corresponding path program 1 times [2021-11-06 11:35:17,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:35:17,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292734634] [2021-11-06 11:35:17,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:35:17,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:35:17,297 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:35:17,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [829311527] [2021-11-06 11:35:17,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:35:17,298 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:35:17,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:35:17,299 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) [2021-11-06 11:35:17,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 11:35:17,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:35:18,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 2978 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-06 11:35:18,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:35:18,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:35:18,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:35:18,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292734634] [2021-11-06 11:35:18,686 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:35:18,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829311527] [2021-11-06 11:35:18,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829311527] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:35:18,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:35:18,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 11:35:18,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054436864] [2021-11-06 11:35:18,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 11:35:18,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:35:18,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 11:35:18,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 11:35:18,688 INFO L87 Difference]: Start difference. First operand 1136 states and 1448 transitions. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:35:20,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:35:20,305 INFO L93 Difference]: Finished difference Result 2246 states and 2871 transitions. [2021-11-06 11:35:20,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 11:35:20,306 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2021-11-06 11:35:20,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:35:20,309 INFO L225 Difference]: With dead ends: 2246 [2021-11-06 11:35:20,309 INFO L226 Difference]: Without dead ends: 1284 [2021-11-06 11:35:20,311 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-06 11:35:20,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2021-11-06 11:35:20,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1136. [2021-11-06 11:35:20,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1106 states have (on average 1.3047016274864376) internal successors, (1443), 1135 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:35:20,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1443 transitions. [2021-11-06 11:35:20,338 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1443 transitions. Word has length 117 [2021-11-06 11:35:20,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:35:20,338 INFO L470 AbstractCegarLoop]: Abstraction has 1136 states and 1443 transitions. [2021-11-06 11:35:20,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:35:20,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1443 transitions. [2021-11-06 11:35:20,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-06 11:35:20,339 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:35:20,339 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:35:20,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-06 11:35:20,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:35:20,561 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-06 11:35:20,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:35:20,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1113366613, now seen corresponding path program 1 times [2021-11-06 11:35:20,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:35:20,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580306602] [2021-11-06 11:35:20,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:35:20,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:35:20,633 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:35:20,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [659029143] [2021-11-06 11:35:20,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:35:20,633 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:35:20,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:35:20,634 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) [2021-11-06 11:35:20,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-06 11:35:21,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:35:21,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 3168 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-06 11:35:21,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:35:22,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:35:22,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:35:22,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580306602] [2021-11-06 11:35:22,119 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:35:22,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659029143] [2021-11-06 11:35:22,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659029143] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:35:22,119 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:35:22,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 11:35:22,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011156363] [2021-11-06 11:35:22,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 11:35:22,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:35:22,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 11:35:22,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 11:35:22,121 INFO L87 Difference]: Start difference. First operand 1136 states and 1443 transitions. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:35:35,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:35:35,721 INFO L93 Difference]: Finished difference Result 3108 states and 3945 transitions. [2021-11-06 11:35:35,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 11:35:35,722 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2021-11-06 11:35:35,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:35:35,730 INFO L225 Difference]: With dead ends: 3108 [2021-11-06 11:35:35,730 INFO L226 Difference]: Without dead ends: 2049 [2021-11-06 11:35:35,732 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-06 11:35:35,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2049 states. [2021-11-06 11:35:35,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2049 to 1160. [2021-11-06 11:35:35,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1160 states, 1130 states have (on average 1.3035398230088495) internal successors, (1473), 1159 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:35:35,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1473 transitions. [2021-11-06 11:35:35,782 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1473 transitions. Word has length 133 [2021-11-06 11:35:35,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:35:35,782 INFO L470 AbstractCegarLoop]: Abstraction has 1160 states and 1473 transitions. [2021-11-06 11:35:35,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:35:35,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1473 transitions. [2021-11-06 11:35:35,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-06 11:35:35,784 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:35:35,784 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:35:35,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-06 11:35:35,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:35:35,999 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-06 11:35:36,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:35:36,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1316278763, now seen corresponding path program 1 times [2021-11-06 11:35:36,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:35:36,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105706292] [2021-11-06 11:35:36,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:35:36,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:35:36,064 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:35:36,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [125051883] [2021-11-06 11:35:36,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:35:36,064 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:35:36,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:35:36,065 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) [2021-11-06 11:35:36,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-06 11:35:36,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:35:36,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 3162 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 11:35:36,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:35:37,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:35:37,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:35:37,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105706292] [2021-11-06 11:35:37,251 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:35:37,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125051883] [2021-11-06 11:35:37,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125051883] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:35:37,277 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:35:37,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 11:35:37,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464337133] [2021-11-06 11:35:37,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 11:35:37,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:35:37,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 11:35:37,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:35:37,278 INFO L87 Difference]: Start difference. First operand 1160 states and 1473 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:35:37,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:35:37,560 INFO L93 Difference]: Finished difference Result 2261 states and 2874 transitions. [2021-11-06 11:35:37,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 11:35:37,561 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2021-11-06 11:35:37,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:35:37,564 INFO L225 Difference]: With dead ends: 2261 [2021-11-06 11:35:37,564 INFO L226 Difference]: Without dead ends: 1184 [2021-11-06 11:35:37,565 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:35:37,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2021-11-06 11:35:37,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 1172. [2021-11-06 11:35:37,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 1142 states have (on average 1.3003502626970227) internal successors, (1485), 1171 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:35:37,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1485 transitions. [2021-11-06 11:35:37,592 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1485 transitions. Word has length 133 [2021-11-06 11:35:37,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:35:37,592 INFO L470 AbstractCegarLoop]: Abstraction has 1172 states and 1485 transitions. [2021-11-06 11:35:37,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:35:37,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1485 transitions. [2021-11-06 11:35:37,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-06 11:35:37,594 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:35:37,594 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:35:37,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-06 11:35:37,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:35:37,808 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-06 11:35:37,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:35:37,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1076039017, now seen corresponding path program 1 times [2021-11-06 11:35:37,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:35:37,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481965018] [2021-11-06 11:35:37,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:35:37,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:35:37,868 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:35:37,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [161507113] [2021-11-06 11:35:37,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:35:37,869 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:35:37,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:35:37,870 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) [2021-11-06 11:35:37,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-06 11:35:38,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:35:38,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 3157 conjuncts, 62 conjunts are in the unsatisfiable core [2021-11-06 11:35:38,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:35:40,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:35:40,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:35:40,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481965018] [2021-11-06 11:35:40,245 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:35:40,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161507113] [2021-11-06 11:35:40,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161507113] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:35:40,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:35:40,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-06 11:35:40,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602670807] [2021-11-06 11:35:40,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-06 11:35:40,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:35:40,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-06 11:35:40,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-06 11:35:40,247 INFO L87 Difference]: Start difference. First operand 1172 states and 1485 transitions. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:35:58,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:35:58,025 INFO L93 Difference]: Finished difference Result 7948 states and 9984 transitions. [2021-11-06 11:35:58,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-06 11:35:58,026 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2021-11-06 11:35:58,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:35:58,046 INFO L225 Difference]: With dead ends: 7948 [2021-11-06 11:35:58,047 INFO L226 Difference]: Without dead ends: 6868 [2021-11-06 11:35:58,052 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=369, Invalid=1353, Unknown=0, NotChecked=0, Total=1722 [2021-11-06 11:35:58,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6868 states. [2021-11-06 11:35:58,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6868 to 1253. [2021-11-06 11:35:58,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1253 states, 1223 states have (on average 1.3000817661488144) internal successors, (1590), 1252 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:35:58,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 1590 transitions. [2021-11-06 11:35:58,123 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 1590 transitions. Word has length 133 [2021-11-06 11:35:58,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:35:58,124 INFO L470 AbstractCegarLoop]: Abstraction has 1253 states and 1590 transitions. [2021-11-06 11:35:58,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:35:58,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 1590 transitions. [2021-11-06 11:35:58,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-06 11:35:58,125 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:35:58,125 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:35:58,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-06 11:35:58,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:35:58,336 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-06 11:35:58,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:35:58,337 INFO L85 PathProgramCache]: Analyzing trace with hash 785505495, now seen corresponding path program 1 times [2021-11-06 11:35:58,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:35:58,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059636143] [2021-11-06 11:35:58,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:35:58,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:35:58,404 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:35:58,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1946788756] [2021-11-06 11:35:58,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:35:58,405 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:35:58,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:35:58,406 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) [2021-11-06 11:35:58,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-06 11:35:59,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:35:59,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 3147 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 11:35:59,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:35:59,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:35:59,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:35:59,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059636143] [2021-11-06 11:35:59,647 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:35:59,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946788756] [2021-11-06 11:35:59,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946788756] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:35:59,647 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:35:59,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 11:35:59,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836199398] [2021-11-06 11:35:59,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 11:35:59,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:35:59,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 11:35:59,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:35:59,648 INFO L87 Difference]: Start difference. First operand 1253 states and 1590 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:36:01,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:36:01,400 INFO L93 Difference]: Finished difference Result 2655 states and 3400 transitions. [2021-11-06 11:36:01,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 11:36:01,401 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2021-11-06 11:36:01,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:36:01,405 INFO L225 Difference]: With dead ends: 2655 [2021-11-06 11:36:01,405 INFO L226 Difference]: Without dead ends: 1457 [2021-11-06 11:36:01,407 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:36:01,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2021-11-06 11:36:01,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1331. [2021-11-06 11:36:01,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1331 states, 1301 states have (on average 1.2797847809377403) internal successors, (1665), 1330 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:36:01,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 1665 transitions. [2021-11-06 11:36:01,449 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 1665 transitions. Word has length 133 [2021-11-06 11:36:01,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:36:01,449 INFO L470 AbstractCegarLoop]: Abstraction has 1331 states and 1665 transitions. [2021-11-06 11:36:01,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:36:01,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 1665 transitions. [2021-11-06 11:36:01,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-06 11:36:01,451 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:36:01,451 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:36:01,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-06 11:36:01,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:36:01,668 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-06 11:36:01,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:36:01,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1918895115, now seen corresponding path program 1 times [2021-11-06 11:36:01,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:36:01,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058374981] [2021-11-06 11:36:01,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:36:01,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:36:01,731 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:36:01,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1059803918] [2021-11-06 11:36:01,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:36:01,731 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:36:01,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:36:01,732 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) [2021-11-06 11:36:01,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-06 11:36:02,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:36:02,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 3172 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-06 11:36:02,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:36:03,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:36:03,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:36:03,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058374981] [2021-11-06 11:36:03,211 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:36:03,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059803918] [2021-11-06 11:36:03,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059803918] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:36:03,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:36:03,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 11:36:03,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194216174] [2021-11-06 11:36:03,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 11:36:03,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:36:03,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 11:36:03,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:36:03,213 INFO L87 Difference]: Start difference. First operand 1331 states and 1665 transitions. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:36:15,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:36:15,900 INFO L93 Difference]: Finished difference Result 3482 states and 4300 transitions. [2021-11-06 11:36:15,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 11:36:15,902 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-11-06 11:36:15,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:36:15,909 INFO L225 Difference]: With dead ends: 3482 [2021-11-06 11:36:15,909 INFO L226 Difference]: Without dead ends: 2207 [2021-11-06 11:36:15,911 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-06 11:36:15,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2021-11-06 11:36:15,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 1373. [2021-11-06 11:36:15,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1373 states, 1343 states have (on average 1.2710349962769918) internal successors, (1707), 1372 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:36:15,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 1707 transitions. [2021-11-06 11:36:15,965 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 1707 transitions. Word has length 137 [2021-11-06 11:36:15,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:36:15,965 INFO L470 AbstractCegarLoop]: Abstraction has 1373 states and 1707 transitions. [2021-11-06 11:36:15,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:36:15,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 1707 transitions. [2021-11-06 11:36:15,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-06 11:36:15,967 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:36:15,967 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:36:15,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-06 11:36:16,179 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,SelfDestructingSolverStorable11 [2021-11-06 11:36:16,180 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-06 11:36:16,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:36:16,180 INFO L85 PathProgramCache]: Analyzing trace with hash 436910135, now seen corresponding path program 1 times [2021-11-06 11:36:16,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:36:16,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386594404] [2021-11-06 11:36:16,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:36:16,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:36:16,269 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:36:16,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [550897913] [2021-11-06 11:36:16,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:36:16,270 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:36:16,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:36:16,271 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) [2021-11-06 11:36:16,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-06 11:36:17,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:36:17,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 3167 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-06 11:36:17,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:36:18,907 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 32 treesize of output 24 [2021-11-06 11:36:18,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-06 11:36:19,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:36:19,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:36:19,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386594404] [2021-11-06 11:36:19,248 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:36:19,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550897913] [2021-11-06 11:36:19,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550897913] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:36:19,248 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:36:19,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-06 11:36:19,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158200548] [2021-11-06 11:36:19,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 11:36:19,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:36:19,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 11:36:19,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-06 11:36:19,249 INFO L87 Difference]: Start difference. First operand 1373 states and 1707 transitions. Second operand has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:36:38,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:36:38,517 INFO L93 Difference]: Finished difference Result 6251 states and 7703 transitions. [2021-11-06 11:36:38,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-06 11:36:38,518 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-11-06 11:36:38,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:36:38,529 INFO L225 Difference]: With dead ends: 6251 [2021-11-06 11:36:38,529 INFO L226 Difference]: Without dead ends: 5012 [2021-11-06 11:36:38,531 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=276, Invalid=780, Unknown=0, NotChecked=0, Total=1056 [2021-11-06 11:36:38,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5012 states. [2021-11-06 11:36:38,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5012 to 2399. [2021-11-06 11:36:38,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2399 states, 2369 states have (on average 1.273533136344449) internal successors, (3017), 2398 states have internal predecessors, (3017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:36:38,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2399 states to 2399 states and 3017 transitions. [2021-11-06 11:36:38,622 INFO L78 Accepts]: Start accepts. Automaton has 2399 states and 3017 transitions. Word has length 137 [2021-11-06 11:36:38,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:36:38,622 INFO L470 AbstractCegarLoop]: Abstraction has 2399 states and 3017 transitions. [2021-11-06 11:36:38,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:36:38,623 INFO L276 IsEmpty]: Start isEmpty. Operand 2399 states and 3017 transitions. [2021-11-06 11:36:38,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-06 11:36:38,624 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:36:38,624 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:36:38,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-06 11:36:38,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-06 11:36:38,837 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-06 11:36:38,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:36:38,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1182064779, now seen corresponding path program 1 times [2021-11-06 11:36:38,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:36:38,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745736817] [2021-11-06 11:36:38,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:36:38,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:36:38,898 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:36:38,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [934722243] [2021-11-06 11:36:38,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:36:38,898 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:36:38,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:36:38,899 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) [2021-11-06 11:36:38,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-06 11:36:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:36:39,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 3162 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-06 11:36:39,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:36:40,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:36:40,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:36:40,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745736817] [2021-11-06 11:36:40,563 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:36:40,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934722243] [2021-11-06 11:36:40,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934722243] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:36:40,563 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:36:40,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 11:36:40,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542680755] [2021-11-06 11:36:40,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 11:36:40,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:36:40,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 11:36:40,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:36:40,565 INFO L87 Difference]: Start difference. First operand 2399 states and 3017 transitions. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:36:52,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:36:52,075 INFO L93 Difference]: Finished difference Result 5913 states and 7355 transitions. [2021-11-06 11:36:52,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 11:36:52,077 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-11-06 11:36:52,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:36:52,083 INFO L225 Difference]: With dead ends: 5913 [2021-11-06 11:36:52,084 INFO L226 Difference]: Without dead ends: 3571 [2021-11-06 11:36:52,086 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 11:36:52,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3571 states. [2021-11-06 11:36:52,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3571 to 2399. [2021-11-06 11:36:52,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2399 states, 2369 states have (on average 1.241452089489236) internal successors, (2941), 2398 states have internal predecessors, (2941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:36:52,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2399 states to 2399 states and 2941 transitions. [2021-11-06 11:36:52,199 INFO L78 Accepts]: Start accepts. Automaton has 2399 states and 2941 transitions. Word has length 137 [2021-11-06 11:36:52,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:36:52,200 INFO L470 AbstractCegarLoop]: Abstraction has 2399 states and 2941 transitions. [2021-11-06 11:36:52,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:36:52,200 INFO L276 IsEmpty]: Start isEmpty. Operand 2399 states and 2941 transitions. [2021-11-06 11:36:52,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-06 11:36:52,201 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:36:52,201 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:36:52,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-06 11:36:52,411 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,SelfDestructingSolverStorable13 [2021-11-06 11:36:52,412 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-06 11:36:52,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:36:52,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1172320503, now seen corresponding path program 1 times [2021-11-06 11:36:52,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:36:52,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771180986] [2021-11-06 11:36:52,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:36:52,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:36:52,475 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:36:52,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [488625793] [2021-11-06 11:36:52,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:36:52,476 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:36:52,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:36:52,477 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) [2021-11-06 11:36:52,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-06 11:36:53,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:36:53,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 3167 conjuncts, 76 conjunts are in the unsatisfiable core [2021-11-06 11:36:53,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:36:55,610 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 32 treesize of output 24 [2021-11-06 11:36:55,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-06 11:36:55,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:36:55,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:36:55,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771180986] [2021-11-06 11:36:55,910 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:36:55,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488625793] [2021-11-06 11:36:55,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488625793] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:36:55,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:36:55,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-06 11:36:55,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841607704] [2021-11-06 11:36:55,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-06 11:36:55,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:36:55,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-06 11:36:55,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-11-06 11:36:55,912 INFO L87 Difference]: Start difference. First operand 2399 states and 2941 transitions. Second operand has 13 states, 13 states have (on average 10.538461538461538) internal successors, (137), 13 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:37:26,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:37:26,673 INFO L93 Difference]: Finished difference Result 13155 states and 15921 transitions. [2021-11-06 11:37:26,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-06 11:37:26,674 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.538461538461538) internal successors, (137), 13 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-11-06 11:37:26,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:37:26,692 INFO L225 Difference]: With dead ends: 13155 [2021-11-06 11:37:26,692 INFO L226 Difference]: Without dead ends: 10965 [2021-11-06 11:37:26,697 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=517, Invalid=2033, Unknown=0, NotChecked=0, Total=2550 [2021-11-06 11:37:26,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10965 states. [2021-11-06 11:37:26,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10965 to 2425. [2021-11-06 11:37:26,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2425 states, 2395 states have (on average 1.240918580375783) internal successors, (2972), 2424 states have internal predecessors, (2972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:37:26,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2425 states to 2425 states and 2972 transitions. [2021-11-06 11:37:26,850 INFO L78 Accepts]: Start accepts. Automaton has 2425 states and 2972 transitions. Word has length 137 [2021-11-06 11:37:26,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:37:26,850 INFO L470 AbstractCegarLoop]: Abstraction has 2425 states and 2972 transitions. [2021-11-06 11:37:26,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.538461538461538) internal successors, (137), 13 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:37:26,850 INFO L276 IsEmpty]: Start isEmpty. Operand 2425 states and 2972 transitions. [2021-11-06 11:37:26,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-06 11:37:26,851 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:37:26,852 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:37:26,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-06 11:37:27,079 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,SelfDestructingSolverStorable14 [2021-11-06 11:37:27,080 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-06 11:37:27,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:37:27,080 INFO L85 PathProgramCache]: Analyzing trace with hash 319026165, now seen corresponding path program 1 times [2021-11-06 11:37:27,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:37:27,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684909443] [2021-11-06 11:37:27,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:37:27,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:37:27,136 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:37:27,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1737854737] [2021-11-06 11:37:27,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:37:27,137 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:37:27,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:37:27,137 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) [2021-11-06 11:37:27,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-06 11:37:28,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:37:28,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 3172 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 11:37:28,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:37:28,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:37:28,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:37:28,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684909443] [2021-11-06 11:37:28,678 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:37:28,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737854737] [2021-11-06 11:37:28,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737854737] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:37:28,678 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:37:28,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 11:37:28,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806754506] [2021-11-06 11:37:28,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 11:37:28,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:37:28,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 11:37:28,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:37:28,679 INFO L87 Difference]: Start difference. First operand 2425 states and 2972 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:37:29,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:37:29,173 INFO L93 Difference]: Finished difference Result 4675 states and 5718 transitions. [2021-11-06 11:37:29,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 11:37:29,174 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-11-06 11:37:29,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:37:29,177 INFO L225 Difference]: With dead ends: 4675 [2021-11-06 11:37:29,177 INFO L226 Difference]: Without dead ends: 2388 [2021-11-06 11:37:29,180 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:37:29,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2021-11-06 11:37:29,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2371. [2021-11-06 11:37:29,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2371 states, 2341 states have (on average 1.2306706535668517) internal successors, (2881), 2370 states have internal predecessors, (2881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:37:29,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2371 states to 2371 states and 2881 transitions. [2021-11-06 11:37:29,282 INFO L78 Accepts]: Start accepts. Automaton has 2371 states and 2881 transitions. Word has length 137 [2021-11-06 11:37:29,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:37:29,282 INFO L470 AbstractCegarLoop]: Abstraction has 2371 states and 2881 transitions. [2021-11-06 11:37:29,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:37:29,283 INFO L276 IsEmpty]: Start isEmpty. Operand 2371 states and 2881 transitions. [2021-11-06 11:37:29,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-06 11:37:29,284 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:37:29,284 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:37:29,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-06 11:37:29,505 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,SelfDestructingSolverStorable15 [2021-11-06 11:37:29,505 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-06 11:37:29,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:37:29,506 INFO L85 PathProgramCache]: Analyzing trace with hash -293678503, now seen corresponding path program 1 times [2021-11-06 11:37:29,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:37:29,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129104741] [2021-11-06 11:37:29,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:37:29,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:37:29,560 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:37:29,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [264019841] [2021-11-06 11:37:29,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:37:29,561 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:37:29,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:37:29,562 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) [2021-11-06 11:37:29,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-06 11:37:30,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:37:30,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 3186 conjuncts, 104 conjunts are in the unsatisfiable core [2021-11-06 11:37:30,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:37:32,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2021-11-06 11:37:32,349 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 30 treesize of output 18 [2021-11-06 11:37:32,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2021-11-06 11:37:32,773 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 30 treesize of output 18 [2021-11-06 11:37:33,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:37:33,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:37:33,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129104741] [2021-11-06 11:37:33,127 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:37:33,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264019841] [2021-11-06 11:37:33,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264019841] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:37:33,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:37:33,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-06 11:37:33,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685265112] [2021-11-06 11:37:33,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-06 11:37:33,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:37:33,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-06 11:37:33,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-11-06 11:37:33,128 INFO L87 Difference]: Start difference. First operand 2371 states and 2881 transitions. Second operand has 16 states, 16 states have (on average 8.625) internal successors, (138), 16 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:38:05,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:38:05,861 INFO L93 Difference]: Finished difference Result 9208 states and 11096 transitions. [2021-11-06 11:38:05,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-06 11:38:05,862 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.625) internal successors, (138), 16 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-11-06 11:38:05,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:38:05,873 INFO L225 Difference]: With dead ends: 9208 [2021-11-06 11:38:05,873 INFO L226 Difference]: Without dead ends: 7141 [2021-11-06 11:38:05,877 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=321, Invalid=1085, Unknown=0, NotChecked=0, Total=1406 [2021-11-06 11:38:05,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7141 states. [2021-11-06 11:38:06,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7141 to 3617. [2021-11-06 11:38:06,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3617 states, 3587 states have (on average 1.2319487036520769) internal successors, (4419), 3616 states have internal predecessors, (4419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:38:06,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3617 states to 3617 states and 4419 transitions. [2021-11-06 11:38:06,079 INFO L78 Accepts]: Start accepts. Automaton has 3617 states and 4419 transitions. Word has length 138 [2021-11-06 11:38:06,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:38:06,080 INFO L470 AbstractCegarLoop]: Abstraction has 3617 states and 4419 transitions. [2021-11-06 11:38:06,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.625) internal successors, (138), 16 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:38:06,080 INFO L276 IsEmpty]: Start isEmpty. Operand 3617 states and 4419 transitions. [2021-11-06 11:38:06,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-06 11:38:06,081 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:38:06,081 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:38:06,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-06 11:38:06,296 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,SelfDestructingSolverStorable16 [2021-11-06 11:38:06,296 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-06 11:38:06,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:38:06,297 INFO L85 PathProgramCache]: Analyzing trace with hash -383102567, now seen corresponding path program 1 times [2021-11-06 11:38:06,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:38:06,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249306678] [2021-11-06 11:38:06,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:38:06,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:38:06,347 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:38:06,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2065416162] [2021-11-06 11:38:06,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:38:06,348 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:38:06,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:38:06,349 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) [2021-11-06 11:38:06,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-06 11:38:07,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:38:07,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 3186 conjuncts, 145 conjunts are in the unsatisfiable core [2021-11-06 11:38:07,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:38:10,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2021-11-06 11:38:10,194 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 30 treesize of output 18 [2021-11-06 11:38:10,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2021-11-06 11:38:10,828 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 30 treesize of output 18 [2021-11-06 11:38:11,036 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-06 11:38:11,042 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-06 11:38:11,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 47 [2021-11-06 11:38:11,048 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-06 11:38:11,053 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-06 11:38:11,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 20 [2021-11-06 11:38:11,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:38:11,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:38:11,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249306678] [2021-11-06 11:38:11,469 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:38:11,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065416162] [2021-11-06 11:38:11,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065416162] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:38:11,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:38:11,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-06 11:38:11,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920969644] [2021-11-06 11:38:11,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-06 11:38:11,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:38:11,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-06 11:38:11,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2021-11-06 11:38:11,471 INFO L87 Difference]: Start difference. First operand 3617 states and 4419 transitions. Second operand has 21 states, 21 states have (on average 6.571428571428571) internal successors, (138), 21 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:39:03,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:39:03,677 INFO L93 Difference]: Finished difference Result 16287 states and 19723 transitions. [2021-11-06 11:39:03,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-11-06 11:39:03,677 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.571428571428571) internal successors, (138), 21 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-11-06 11:39:03,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:39:03,692 INFO L225 Difference]: With dead ends: 16287 [2021-11-06 11:39:03,692 INFO L226 Difference]: Without dead ends: 14009 [2021-11-06 11:39:03,696 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1657 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=1015, Invalid=4535, Unknown=0, NotChecked=0, Total=5550 [2021-11-06 11:39:03,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14009 states. [2021-11-06 11:39:04,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14009 to 6293. [2021-11-06 11:39:04,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6293 states, 6263 states have (on average 1.2332747884400448) internal successors, (7724), 6292 states have internal predecessors, (7724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:39:04,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6293 states to 6293 states and 7724 transitions. [2021-11-06 11:39:04,014 INFO L78 Accepts]: Start accepts. Automaton has 6293 states and 7724 transitions. Word has length 138 [2021-11-06 11:39:04,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:39:04,015 INFO L470 AbstractCegarLoop]: Abstraction has 6293 states and 7724 transitions. [2021-11-06 11:39:04,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.571428571428571) internal successors, (138), 21 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:39:04,015 INFO L276 IsEmpty]: Start isEmpty. Operand 6293 states and 7724 transitions. [2021-11-06 11:39:04,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-06 11:39:04,016 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:39:04,017 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:39:04,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-06 11:39:04,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:39:04,220 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-06 11:39:04,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:39:04,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1251277366, now seen corresponding path program 1 times [2021-11-06 11:39:04,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:39:04,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755558222] [2021-11-06 11:39:04,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:39:04,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:39:04,267 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:39:04,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [539445487] [2021-11-06 11:39:04,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:39:04,268 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:39:04,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:39:04,269 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) [2021-11-06 11:39:04,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-06 11:39:06,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:39:06,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 3205 conjuncts, 130 conjunts are in the unsatisfiable core [2021-11-06 11:39:06,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:39:06,241 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 [2021-11-06 11:39:07,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:39:07,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-11-06 11:39:07,525 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-06 11:39:07,525 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 32 treesize of output 20 [2021-11-06 11:39:07,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:39:07,591 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 27 treesize of output 15 [2021-11-06 11:39:07,873 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-06 11:39:07,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-06 11:39:08,058 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-06 11:39:08,058 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 29 treesize of output 28 [2021-11-06 11:39:10,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:39:10,118 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 25 treesize of output 24 [2021-11-06 11:39:11,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-06 11:39:11,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-06 11:39:12,374 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 41 treesize of output 29 [2021-11-06 11:39:12,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:39:12,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:39:12,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755558222] [2021-11-06 11:39:12,810 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:39:12,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539445487] [2021-11-06 11:39:12,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539445487] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:39:12,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:39:12,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-11-06 11:39:12,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642593765] [2021-11-06 11:39:12,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-06 11:39:12,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:39:12,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-06 11:39:12,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2021-11-06 11:39:12,812 INFO L87 Difference]: Start difference. First operand 6293 states and 7724 transitions. Second operand has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 24 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:39:46,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:39:46,368 INFO L93 Difference]: Finished difference Result 12588 states and 15451 transitions. [2021-11-06 11:39:46,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-06 11:39:46,369 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 24 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-11-06 11:39:46,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:39:46,378 INFO L225 Difference]: With dead ends: 12588 [2021-11-06 11:39:46,378 INFO L226 Difference]: Without dead ends: 6290 [2021-11-06 11:39:46,383 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=312, Invalid=1668, Unknown=0, NotChecked=0, Total=1980 [2021-11-06 11:39:46,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6290 states. [2021-11-06 11:39:46,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6290 to 6289. [2021-11-06 11:39:46,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6289 states, 6259 states have (on average 1.233264099696437) internal successors, (7719), 6288 states have internal predecessors, (7719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:39:46,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6289 states to 6289 states and 7719 transitions. [2021-11-06 11:39:46,668 INFO L78 Accepts]: Start accepts. Automaton has 6289 states and 7719 transitions. Word has length 139 [2021-11-06 11:39:46,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:39:46,668 INFO L470 AbstractCegarLoop]: Abstraction has 6289 states and 7719 transitions. [2021-11-06 11:39:46,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 24 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:39:46,669 INFO L276 IsEmpty]: Start isEmpty. Operand 6289 states and 7719 transitions. [2021-11-06 11:39:46,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-06 11:39:46,670 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:39:46,670 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:39:46,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-06 11:39:46,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:39:46,871 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-06 11:39:46,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:39:46,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1723457824, now seen corresponding path program 1 times [2021-11-06 11:39:46,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:39:46,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400594788] [2021-11-06 11:39:46,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:39:46,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:39:46,975 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:39:46,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1074083953] [2021-11-06 11:39:46,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:39:46,976 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:39:46,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:39:46,977 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) [2021-11-06 11:39:46,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-06 11:39:48,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:39:48,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 3219 conjuncts, 73 conjunts are in the unsatisfiable core [2021-11-06 11:39:48,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:39:48,491 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 [2021-11-06 11:39:49,037 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-06 11:39:49,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-06 11:39:49,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-11-06 11:39:49,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:39:49,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 32 [2021-11-06 11:39:50,194 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-06 11:39:50,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 35 [2021-11-06 11:39:50,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:39:50,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 30 [2021-11-06 11:39:50,691 INFO L354 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2021-11-06 11:39:50,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2021-11-06 11:39:50,961 INFO L354 Elim1Store]: treesize reduction 56, result has 21.1 percent of original size [2021-11-06 11:39:50,962 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 51 treesize of output 34 [2021-11-06 11:39:51,214 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-06 11:39:51,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2021-11-06 11:39:51,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:39:51,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:39:51,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400594788] [2021-11-06 11:39:51,827 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:39:51,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074083953] [2021-11-06 11:39:51,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074083953] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:39:51,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:39:51,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-06 11:39:51,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294962733] [2021-11-06 11:39:51,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-06 11:39:51,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:39:51,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-06 11:39:51,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-11-06 11:39:51,828 INFO L87 Difference]: Start difference. First operand 6289 states and 7719 transitions. Second operand has 15 states, 15 states have (on average 9.466666666666667) internal successors, (142), 15 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:40:20,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:40:20,255 INFO L93 Difference]: Finished difference Result 12955 states and 15809 transitions. [2021-11-06 11:40:20,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-06 11:40:20,257 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.466666666666667) internal successors, (142), 15 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2021-11-06 11:40:20,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:40:20,265 INFO L225 Difference]: With dead ends: 12955 [2021-11-06 11:40:20,265 INFO L226 Difference]: Without dead ends: 6720 [2021-11-06 11:40:20,271 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=155, Invalid=495, Unknown=0, NotChecked=0, Total=650 [2021-11-06 11:40:20,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6720 states. [2021-11-06 11:40:20,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6720 to 6289. [2021-11-06 11:40:20,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6289 states, 6259 states have (on average 1.2331043297651383) internal successors, (7718), 6288 states have internal predecessors, (7718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:40:20,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6289 states to 6289 states and 7718 transitions. [2021-11-06 11:40:20,589 INFO L78 Accepts]: Start accepts. Automaton has 6289 states and 7718 transitions. Word has length 142 [2021-11-06 11:40:20,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:40:20,589 INFO L470 AbstractCegarLoop]: Abstraction has 6289 states and 7718 transitions. [2021-11-06 11:40:20,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.466666666666667) internal successors, (142), 15 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:40:20,590 INFO L276 IsEmpty]: Start isEmpty. Operand 6289 states and 7718 transitions. [2021-11-06 11:40:20,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-06 11:40:20,595 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:40:20,596 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:40:20,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-06 11:40:20,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:40:20,810 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-06 11:40:20,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:40:20,811 INFO L85 PathProgramCache]: Analyzing trace with hash 2099931590, now seen corresponding path program 1 times [2021-11-06 11:40:20,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:40:20,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586120964] [2021-11-06 11:40:20,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:40:20,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:40:20,920 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:40:20,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1561475952] [2021-11-06 11:40:20,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:40:20,920 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:40:20,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:40:20,922 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) [2021-11-06 11:40:20,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-06 11:40:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:40:22,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 3224 conjuncts, 92 conjunts are in the unsatisfiable core [2021-11-06 11:40:22,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:40:24,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:40:24,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 40 [2021-11-06 11:40:24,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:40:24,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-11-06 11:40:25,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 36 [2021-11-06 11:40:25,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2021-11-06 11:40:25,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2021-11-06 11:40:25,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2021-11-06 11:40:25,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:40:25,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:40:25,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586120964] [2021-11-06 11:40:25,573 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:40:25,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561475952] [2021-11-06 11:40:25,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561475952] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:40:25,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:40:25,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-06 11:40:25,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356494947] [2021-11-06 11:40:25,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-06 11:40:25,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:40:25,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-06 11:40:25,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-11-06 11:40:25,574 INFO L87 Difference]: Start difference. First operand 6289 states and 7718 transitions. Second operand has 16 states, 16 states have (on average 9.0) internal successors, (144), 16 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:41:08,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:41:08,041 INFO L93 Difference]: Finished difference Result 24582 states and 29887 transitions. [2021-11-06 11:41:08,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-06 11:41:08,042 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 9.0) internal successors, (144), 16 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-11-06 11:41:08,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:41:08,063 INFO L225 Difference]: With dead ends: 24582 [2021-11-06 11:41:08,063 INFO L226 Difference]: Without dead ends: 18554 [2021-11-06 11:41:08,072 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=529, Invalid=1921, Unknown=0, NotChecked=0, Total=2450 [2021-11-06 11:41:08,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18554 states. [2021-11-06 11:41:08,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18554 to 12187. [2021-11-06 11:41:08,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12187 states, 12157 states have (on average 1.234103808505388) internal successors, (15003), 12186 states have internal predecessors, (15003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:41:08,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12187 states to 12187 states and 15003 transitions. [2021-11-06 11:41:08,780 INFO L78 Accepts]: Start accepts. Automaton has 12187 states and 15003 transitions. Word has length 144 [2021-11-06 11:41:08,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:41:08,781 INFO L470 AbstractCegarLoop]: Abstraction has 12187 states and 15003 transitions. [2021-11-06 11:41:08,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.0) internal successors, (144), 16 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:41:08,781 INFO L276 IsEmpty]: Start isEmpty. Operand 12187 states and 15003 transitions. [2021-11-06 11:41:08,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-06 11:41:08,783 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:41:08,783 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:41:08,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-06 11:41:08,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:41:09,000 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-06 11:41:09,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:41:09,000 INFO L85 PathProgramCache]: Analyzing trace with hash 438065414, now seen corresponding path program 1 times [2021-11-06 11:41:09,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:41:09,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820897436] [2021-11-06 11:41:09,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:41:09,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:41:09,065 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:41:09,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [492282463] [2021-11-06 11:41:09,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:41:09,066 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:41:09,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:41:09,080 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) [2021-11-06 11:41:09,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-06 11:41:10,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:41:10,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 3224 conjuncts, 179 conjunts are in the unsatisfiable core [2021-11-06 11:41:10,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:41:10,910 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 [2021-11-06 11:41:11,620 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-06 11:41:11,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-06 11:41:11,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:41:11,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-06 11:41:11,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:41:11,886 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 36 treesize of output 35 [2021-11-06 11:41:12,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:41:12,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:41:12,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:41:12,286 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 54 treesize of output 44 [2021-11-06 11:41:12,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:41:12,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-06 11:41:12,875 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-06 11:41:12,876 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 40 [2021-11-06 11:41:13,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:41:13,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:41:13,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:41:13,344 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 54 treesize of output 44 [2021-11-06 11:41:13,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:41:13,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:41:13,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:41:13,538 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 52 treesize of output 42 [2021-11-06 11:41:14,412 INFO L354 Elim1Store]: treesize reduction 154, result has 18.9 percent of original size [2021-11-06 11:41:14,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 40 treesize of output 57 [2021-11-06 11:41:14,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:41:14,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:41:14,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:41:14,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 49 [2021-11-06 11:41:16,488 INFO L354 Elim1Store]: treesize reduction 108, result has 19.4 percent of original size [2021-11-06 11:41:16,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 47 treesize of output 57 [2021-11-06 11:41:17,621 INFO L354 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2021-11-06 11:41:17,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 36 treesize of output 62 [2021-11-06 11:41:17,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:41:17,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:41:17,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:41:18,106 INFO L354 Elim1Store]: treesize reduction 96, result has 21.3 percent of original size [2021-11-06 11:41:18,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 48 [2021-11-06 11:41:19,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-06 11:41:21,760 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-06 11:41:21,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 46 treesize of output 40 [2021-11-06 11:41:22,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:41:22,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:41:22,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820897436] [2021-11-06 11:41:22,543 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:41:22,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492282463] [2021-11-06 11:41:22,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492282463] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:41:22,543 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:41:22,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2021-11-06 11:41:22,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962019107] [2021-11-06 11:41:22,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-06 11:41:22,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:41:22,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-06 11:41:22,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1172, Unknown=0, NotChecked=0, Total=1332 [2021-11-06 11:41:22,545 INFO L87 Difference]: Start difference. First operand 12187 states and 15003 transitions. Second operand has 37 states, 37 states have (on average 3.891891891891892) internal successors, (144), 37 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:44:18,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:44:18,442 INFO L93 Difference]: Finished difference Result 50075 states and 60795 transitions. [2021-11-06 11:44:18,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2021-11-06 11:44:18,444 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.891891891891892) internal successors, (144), 37 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-11-06 11:44:18,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:44:18,496 INFO L225 Difference]: With dead ends: 50075 [2021-11-06 11:44:18,497 INFO L226 Difference]: Without dead ends: 40842 [2021-11-06 11:44:18,517 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8410 ImplicationChecksByTransitivity, 40.6s TimeCoverageRelationStatistics Valid=2787, Invalid=20468, Unknown=1, NotChecked=0, Total=23256 [2021-11-06 11:44:18,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40842 states. [2021-11-06 11:44:19,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40842 to 16596. [2021-11-06 11:44:19,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16596 states, 16566 states have (on average 1.2338524689122299) internal successors, (20440), 16595 states have internal predecessors, (20440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:44:19,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16596 states to 16596 states and 20440 transitions. [2021-11-06 11:44:19,630 INFO L78 Accepts]: Start accepts. Automaton has 16596 states and 20440 transitions. Word has length 144 [2021-11-06 11:44:19,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:44:19,631 INFO L470 AbstractCegarLoop]: Abstraction has 16596 states and 20440 transitions. [2021-11-06 11:44:19,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.891891891891892) internal successors, (144), 37 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:44:19,631 INFO L276 IsEmpty]: Start isEmpty. Operand 16596 states and 20440 transitions. [2021-11-06 11:44:19,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-06 11:44:19,634 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:44:19,634 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:44:19,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-06 11:44:19,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:44:19,835 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-06 11:44:19,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:44:19,835 INFO L85 PathProgramCache]: Analyzing trace with hash 881050508, now seen corresponding path program 1 times [2021-11-06 11:44:19,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:44:19,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295168077] [2021-11-06 11:44:19,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:44:19,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:44:19,888 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:44:19,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [584235331] [2021-11-06 11:44:19,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:44:19,889 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:44:19,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:44:19,890 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) [2021-11-06 11:44:19,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-06 11:44:21,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:44:21,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 3229 conjuncts, 92 conjunts are in the unsatisfiable core [2021-11-06 11:44:21,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:44:23,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:44:23,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 40 [2021-11-06 11:44:23,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:44:23,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-11-06 11:44:24,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 36 [2021-11-06 11:44:24,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2021-11-06 11:44:24,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2021-11-06 11:44:24,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2021-11-06 11:44:24,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:44:24,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:44:24,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295168077] [2021-11-06 11:44:24,696 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:44:24,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584235331] [2021-11-06 11:44:24,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584235331] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:44:24,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:44:24,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-06 11:44:24,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395777619] [2021-11-06 11:44:24,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-06 11:44:24,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:44:24,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-06 11:44:24,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-11-06 11:44:24,698 INFO L87 Difference]: Start difference. First operand 16596 states and 20440 transitions. Second operand has 16 states, 16 states have (on average 9.125) internal successors, (146), 16 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:45:34,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:45:34,831 INFO L93 Difference]: Finished difference Result 78814 states and 96718 transitions. [2021-11-06 11:45:34,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-11-06 11:45:34,833 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 9.125) internal successors, (146), 16 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2021-11-06 11:45:34,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:45:34,939 INFO L225 Difference]: With dead ends: 78814 [2021-11-06 11:45:34,939 INFO L226 Difference]: Without dead ends: 64404 [2021-11-06 11:45:34,961 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2374 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=1447, Invalid=5693, Unknown=0, NotChecked=0, Total=7140 [2021-11-06 11:45:35,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64404 states. [2021-11-06 11:45:37,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64404 to 33339. [2021-11-06 11:45:37,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33339 states, 33309 states have (on average 1.232249542165781) internal successors, (41045), 33338 states have internal predecessors, (41045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:45:37,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33339 states to 33339 states and 41045 transitions. [2021-11-06 11:45:37,477 INFO L78 Accepts]: Start accepts. Automaton has 33339 states and 41045 transitions. Word has length 146 [2021-11-06 11:45:37,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:45:37,478 INFO L470 AbstractCegarLoop]: Abstraction has 33339 states and 41045 transitions. [2021-11-06 11:45:37,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.125) internal successors, (146), 16 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:45:37,478 INFO L276 IsEmpty]: Start isEmpty. Operand 33339 states and 41045 transitions. [2021-11-06 11:45:37,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-06 11:45:37,482 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:45:37,482 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:45:37,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-06 11:45:37,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:45:37,696 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-06 11:45:37,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:45:37,696 INFO L85 PathProgramCache]: Analyzing trace with hash -125857076, now seen corresponding path program 1 times [2021-11-06 11:45:37,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:45:37,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885478204] [2021-11-06 11:45:37,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:45:37,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:45:37,751 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:45:37,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [622845086] [2021-11-06 11:45:37,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:45:37,752 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:45:37,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:45:37,753 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) [2021-11-06 11:45:37,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-06 11:45:40,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:45:40,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 3229 conjuncts, 77 conjunts are in the unsatisfiable core [2021-11-06 11:45:40,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:45:40,588 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 [2021-11-06 11:45:41,325 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-06 11:45:41,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-06 11:45:41,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:45:41,538 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 32 treesize of output 16 [2021-11-06 11:45:41,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:45:41,802 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 32 treesize of output 16 [2021-11-06 11:45:42,505 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-06 11:45:42,505 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 33 treesize of output 21 [2021-11-06 11:45:42,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:45:42,557 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 28 treesize of output 16 [2021-11-06 11:45:43,018 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-06 11:45:43,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2021-11-06 11:45:43,226 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-06 11:45:43,226 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 28 treesize of output 27 [2021-11-06 11:45:46,834 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 10 treesize of output 6 [2021-11-06 11:45:47,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:45:47,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:45:47,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885478204] [2021-11-06 11:45:47,323 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:45:47,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622845086] [2021-11-06 11:45:47,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622845086] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:45:47,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:45:47,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-06 11:45:47,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140692476] [2021-11-06 11:45:47,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-06 11:45:47,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:45:47,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-06 11:45:47,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=143, Unknown=1, NotChecked=0, Total=182 [2021-11-06 11:45:47,325 INFO L87 Difference]: Start difference. First operand 33339 states and 41045 transitions. Second operand has 14 states, 14 states have (on average 10.428571428571429) internal successors, (146), 14 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:46:23,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:46:23,418 INFO L93 Difference]: Finished difference Result 56991 states and 69603 transitions. [2021-11-06 11:46:23,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-06 11:46:23,419 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.428571428571429) internal successors, (146), 14 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2021-11-06 11:46:23,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:46:23,458 INFO L225 Difference]: With dead ends: 56991 [2021-11-06 11:46:23,458 INFO L226 Difference]: Without dead ends: 35702 [2021-11-06 11:46:23,472 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=111, Invalid=350, Unknown=1, NotChecked=0, Total=462 [2021-11-06 11:46:23,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35702 states. [2021-11-06 11:46:25,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35702 to 33383. [2021-11-06 11:46:25,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33383 states, 33353 states have (on average 1.2321230474020328) internal successors, (41095), 33382 states have internal predecessors, (41095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:46:25,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33383 states to 33383 states and 41095 transitions. [2021-11-06 11:46:25,562 INFO L78 Accepts]: Start accepts. Automaton has 33383 states and 41095 transitions. Word has length 146 [2021-11-06 11:46:25,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:46:25,562 INFO L470 AbstractCegarLoop]: Abstraction has 33383 states and 41095 transitions. [2021-11-06 11:46:25,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.428571428571429) internal successors, (146), 14 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:46:25,563 INFO L276 IsEmpty]: Start isEmpty. Operand 33383 states and 41095 transitions. [2021-11-06 11:46:25,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-06 11:46:25,566 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:46:25,566 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:46:25,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-06 11:46:25,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-06 11:46:25,792 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-06 11:46:25,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:46:25,792 INFO L85 PathProgramCache]: Analyzing trace with hash 548581900, now seen corresponding path program 1 times [2021-11-06 11:46:25,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:46:25,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335149140] [2021-11-06 11:46:25,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:46:25,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:46:25,842 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:46:25,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [606229673] [2021-11-06 11:46:25,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:46:25,843 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:46:25,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:46:25,844 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) [2021-11-06 11:46:25,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-06 11:46:27,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:46:27,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 3229 conjuncts, 179 conjunts are in the unsatisfiable core [2021-11-06 11:46:27,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:46:28,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-06 11:46:29,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-06 11:46:30,502 INFO L354 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2021-11-06 11:46:30,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2021-11-06 11:46:31,974 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-06 11:46:31,975 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 [2021-11-06 11:46:32,036 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-06 11:46:32,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 [2021-11-06 11:46:33,351 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-06 11:46:33,360 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-06 11:46:33,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2021-11-06 11:46:33,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:46:33,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:46:33,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335149140] [2021-11-06 11:46:33,582 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:46:33,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606229673] [2021-11-06 11:46:33,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606229673] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:46:33,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:46:33,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-11-06 11:46:33,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336767359] [2021-11-06 11:46:33,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-06 11:46:33,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:46:33,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-06 11:46:33,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=771, Unknown=0, NotChecked=0, Total=870 [2021-11-06 11:46:33,584 INFO L87 Difference]: Start difference. First operand 33383 states and 41095 transitions. Second operand has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Killed by 15