./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f 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_hash_iter_begin_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 0f893dc40cf70b8d30dda6e110329e0bc2218e18bc668acf080889b069fe51ab --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 09:27:46,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 09:27:46,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 09:27:46,610 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 09:27:46,612 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 09:27:46,613 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 09:27:46,614 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 09:27:46,618 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 09:27:46,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 09:27:46,620 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 09:27:46,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 09:27:46,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 09:27:46,622 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 09:27:46,624 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 09:27:46,626 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 09:27:46,627 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 09:27:46,629 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 09:27:46,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 09:27:46,634 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 09:27:46,635 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 09:27:46,636 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 09:27:46,640 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 09:27:46,640 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 09:27:46,641 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 09:27:46,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 09:27:46,648 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 09:27:46,648 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 09:27:46,649 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 09:27:46,649 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 09:27:46,650 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 09:27:46,650 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 09:27:46,650 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 09:27:46,651 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 09:27:46,651 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 09:27:46,652 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 09:27:46,652 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 09:27:46,652 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 09:27:46,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 09:27:46,654 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 09:27:46,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 09:27:46,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 09:27:46,656 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 09:27:46,675 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 09:27:46,675 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 09:27:46,676 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 09:27:46,676 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 09:27:46,677 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 09:27:46,677 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 09:27:46,677 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 09:27:46,677 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 09:27:46,677 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 09:27:46,677 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 09:27:46,678 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 09:27:46,678 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 09:27:46,678 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 09:27:46,678 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 09:27:46,678 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 09:27:46,679 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 09:27:46,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 09:27:46,679 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 09:27:46,679 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 09:27:46,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 09:27:46,679 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 09:27:46,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 09:27:46,680 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 09:27:46,680 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 09:27:46,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 09:27:46,680 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 09:27:46,680 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 09:27:46,681 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 09:27:46,681 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 09:27:46,681 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f893dc40cf70b8d30dda6e110329e0bc2218e18bc668acf080889b069fe51ab [2021-11-07 09:27:46,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 09:27:46,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 09:27:46,911 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 09:27:46,913 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 09:27:46,914 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 09:27:46,915 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i [2021-11-07 09:27:46,976 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1899858f4/a3e11f6babc047deb26f8a2ad2cca19d/FLAGb3b49a6ad [2021-11-07 09:27:47,557 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 09:27:47,559 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i [2021-11-07 09:27:47,591 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1899858f4/a3e11f6babc047deb26f8a2ad2cca19d/FLAGb3b49a6ad [2021-11-07 09:27:47,944 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1899858f4/a3e11f6babc047deb26f8a2ad2cca19d [2021-11-07 09:27:47,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 09:27:47,947 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 09:27:47,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 09:27:47,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 09:27:47,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 09:27:47,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:27:47" (1/1) ... [2021-11-07 09:27:47,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18175ed3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:27:47, skipping insertion in model container [2021-11-07 09:27:47,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:27:47" (1/1) ... [2021-11-07 09:27:47,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 09:27:48,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 09:27:48,241 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_hash_iter_begin_harness.i[4493,4506] [2021-11-07 09:27:48,249 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_hash_iter_begin_harness.i[4553,4566] [2021-11-07 09:27:48,274 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 09:27:48,281 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 09:27:48,857 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:48,857 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:48,859 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:48,859 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:48,860 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:48,878 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:48,881 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:48,883 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:48,884 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:48,885 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:48,887 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:48,887 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:48,888 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:49,127 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 09:27:49,128 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 09:27:49,129 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 09:27:49,130 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 09:27:49,132 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 09:27:49,133 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 09:27:49,133 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 09:27:49,135 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 09:27:49,135 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 09:27:49,143 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 09:27:49,261 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 09:27:49,527 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:49,528 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:49,542 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:49,544 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:49,549 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:49,550 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:49,567 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:49,568 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:49,569 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:49,570 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:49,570 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:49,570 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:49,571 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:49,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 09:27:49,637 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 09:27:49,655 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_hash_iter_begin_harness.i[4493,4506] [2021-11-07 09:27:49,655 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_hash_iter_begin_harness.i[4553,4566] [2021-11-07 09:27:49,657 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 09:27:49,658 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 09:27:49,690 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:49,690 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:49,691 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:49,691 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:49,691 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:49,697 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:49,698 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:49,699 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:49,699 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:49,700 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:49,701 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:49,701 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:49,701 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:49,757 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 09:27:49,757 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 09:27:49,758 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 09:27:49,758 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 09:27:49,759 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 09:27:49,759 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 09:27:49,761 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 09:27:49,761 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 09:27:49,762 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 09:27:49,762 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 09:27:49,780 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 09:27:49,836 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:49,837 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:49,841 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:49,841 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:49,843 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:49,844 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:49,852 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:49,853 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:49,854 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:49,854 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:49,855 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:49,855 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:49,855 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 09:27:49,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 09:27:50,084 INFO L208 MainTranslator]: Completed translation [2021-11-07 09:27:50,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:27:50 WrapperNode [2021-11-07 09:27:50,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 09:27:50,086 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 09:27:50,086 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 09:27:50,086 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 09:27:50,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:27:50" (1/1) ... [2021-11-07 09:27:50,185 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:27:50" (1/1) ... [2021-11-07 09:27:50,260 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 09:27:50,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 09:27:50,261 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 09:27:50,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 09:27:50,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:27:50" (1/1) ... [2021-11-07 09:27:50,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:27:50" (1/1) ... [2021-11-07 09:27:50,280 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:27:50" (1/1) ... [2021-11-07 09:27:50,281 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:27:50" (1/1) ... [2021-11-07 09:27:50,331 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:27:50" (1/1) ... [2021-11-07 09:27:50,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:27:50" (1/1) ... [2021-11-07 09:27:50,352 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:27:50" (1/1) ... [2021-11-07 09:27:50,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 09:27:50,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 09:27:50,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 09:27:50,365 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 09:27:50,365 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:27:50" (1/1) ... [2021-11-07 09:27:50,371 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 09:27:50,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:27:50,389 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) [2021-11-07 09:27:50,392 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 [2021-11-07 09:27:50,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-07 09:27:50,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 09:27:50,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 09:27:50,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 09:27:50,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 09:27:50,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 09:27:50,418 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-07 09:27:50,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 09:27:50,418 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-07 09:27:50,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 09:27:50,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 09:27:50,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 09:27:50,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 09:27:50,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 09:27:57,798 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##150: assume !true; [2021-11-07 09:27:57,804 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 09:27:57,804 INFO L299 CfgBuilder]: Removed 157 assume(true) statements. [2021-11-07 09:27:57,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:27:57 BoogieIcfgContainer [2021-11-07 09:27:57,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 09:27:57,807 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 09:27:57,807 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 09:27:57,810 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 09:27:57,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:27:47" (1/3) ... [2021-11-07 09:27:57,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21627559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:27:57, skipping insertion in model container [2021-11-07 09:27:57,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:27:50" (2/3) ... [2021-11-07 09:27:57,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21627559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:27:57, skipping insertion in model container [2021-11-07 09:27:57,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:27:57" (3/3) ... [2021-11-07 09:27:57,812 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_iter_begin_harness.i [2021-11-07 09:27:57,816 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 09:27:57,816 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-07 09:27:57,849 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 09:27:57,853 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 [2021-11-07 09:27:57,854 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-07 09:27:57,867 INFO L276 IsEmpty]: Start isEmpty. Operand has 202 states, 195 states have (on average 1.4564102564102563) internal successors, (284), 201 states have internal predecessors, (284), 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) [2021-11-07 09:27:57,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-07 09:27:57,873 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:27:57,874 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:27:57,874 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 09:27:57,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:27:57,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1999182466, now seen corresponding path program 1 times [2021-11-07 09:27:57,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:27:57,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980812162] [2021-11-07 09:27:57,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:27:57,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:27:58,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:27:58,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:27:58,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:27:58,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980812162] [2021-11-07 09:27:58,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980812162] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:27:58,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:27:58,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 09:27:58,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497038864] [2021-11-07 09:27:58,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:27:58,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 09:27:58,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:27:58,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 09:27:58,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 09:27:58,312 INFO L87 Difference]: Start difference. First operand has 202 states, 195 states have (on average 1.4564102564102563) internal successors, (284), 201 states have internal predecessors, (284), 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 31.0) internal successors, (62), 2 states have internal predecessors, (62), 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) [2021-11-07 09:27:58,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:27:58,336 INFO L93 Difference]: Finished difference Result 399 states and 562 transitions. [2021-11-07 09:27:58,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 09:27:58,338 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 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 62 [2021-11-07 09:27:58,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:27:58,345 INFO L225 Difference]: With dead ends: 399 [2021-11-07 09:27:58,345 INFO L226 Difference]: Without dead ends: 195 [2021-11-07 09:27:58,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 09:27:58,350 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.59ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 09:27:58,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 1.59ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 09:27:58,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-11-07 09:27:58,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2021-11-07 09:27:58,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 189 states have (on average 1.3597883597883598) internal successors, (257), 194 states have internal predecessors, (257), 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) [2021-11-07 09:27:58,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 257 transitions. [2021-11-07 09:27:58,383 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 257 transitions. Word has length 62 [2021-11-07 09:27:58,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:27:58,384 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 257 transitions. [2021-11-07 09:27:58,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 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) [2021-11-07 09:27:58,384 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 257 transitions. [2021-11-07 09:27:58,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 09:27:58,386 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:27:58,386 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:27:58,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 09:27:58,386 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 09:27:58,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:27:58,387 INFO L85 PathProgramCache]: Analyzing trace with hash 312696489, now seen corresponding path program 1 times [2021-11-07 09:27:58,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:27:58,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814071034] [2021-11-07 09:27:58,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:27:58,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:27:58,492 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 09:27:58,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1320640544] [2021-11-07 09:27:58,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:27:58,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:27:58,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:27:58,494 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) [2021-11-07 09:27:58,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 09:27:59,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:27:59,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 2610 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 09:27:59,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:27:59,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:27:59,915 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 09:27:59,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:27:59,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814071034] [2021-11-07 09:27:59,916 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 09:27:59,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320640544] [2021-11-07 09:27:59,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320640544] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:27:59,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:27:59,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 09:27:59,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440408798] [2021-11-07 09:27:59,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:27:59,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 09:27:59,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:27:59,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 09:27:59,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 09:27:59,918 INFO L87 Difference]: Start difference. First operand 195 states and 257 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 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) [2021-11-07 09:28:00,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:28:00,503 INFO L93 Difference]: Finished difference Result 278 states and 369 transitions. [2021-11-07 09:28:00,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 09:28:00,505 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 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 65 [2021-11-07 09:28:00,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:28:00,506 INFO L225 Difference]: With dead ends: 278 [2021-11-07 09:28:00,506 INFO L226 Difference]: Without dead ends: 196 [2021-11-07 09:28:00,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 257.66ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-07 09:28:00,508 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 539 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 293.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.83ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 374.55ms IncrementalHoareTripleChecker+Time [2021-11-07 09:28:00,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [539 Valid, 594 Invalid, 83 Unknown, 0 Unchecked, 6.83ms Time], IncrementalHoareTripleChecker [5 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 374.55ms Time] [2021-11-07 09:28:00,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-11-07 09:28:00,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 195. [2021-11-07 09:28:00,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 189 states have (on average 1.3492063492063493) internal successors, (255), 194 states have internal predecessors, (255), 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) [2021-11-07 09:28:00,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 255 transitions. [2021-11-07 09:28:00,517 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 255 transitions. Word has length 65 [2021-11-07 09:28:00,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:28:00,518 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 255 transitions. [2021-11-07 09:28:00,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 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) [2021-11-07 09:28:00,518 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 255 transitions. [2021-11-07 09:28:00,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 09:28:00,520 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:28:00,520 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:28:00,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-07 09:28:00,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:28:00,736 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 09:28:00,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:28:00,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1103415697, now seen corresponding path program 1 times [2021-11-07 09:28:00,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:28:00,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063497618] [2021-11-07 09:28:00,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:28:00,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:28:00,816 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 09:28:00,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [820069160] [2021-11-07 09:28:00,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:28:00,817 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:28:00,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:28:00,818 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) [2021-11-07 09:28:00,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 09:28:01,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:28:01,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 2615 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 09:28:01,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:28:01,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:28:01,873 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 09:28:01,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:28:01,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063497618] [2021-11-07 09:28:01,873 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 09:28:01,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820069160] [2021-11-07 09:28:01,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820069160] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:28:01,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:28:01,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 09:28:01,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663402104] [2021-11-07 09:28:01,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:28:01,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 09:28:01,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:28:01,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 09:28:01,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:28:01,875 INFO L87 Difference]: Start difference. First operand 195 states and 255 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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) [2021-11-07 09:28:02,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:28:02,072 INFO L93 Difference]: Finished difference Result 547 states and 721 transitions. [2021-11-07 09:28:02,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 09:28:02,073 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 66 [2021-11-07 09:28:02,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:28:02,074 INFO L225 Difference]: With dead ends: 547 [2021-11-07 09:28:02,074 INFO L226 Difference]: Without dead ends: 374 [2021-11-07 09:28:02,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 111.71ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 09:28:02,076 INFO L933 BasicCegarLoop]: 460 mSDtfsCounter, 462 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 107.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 1411 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.63ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 117.79ms IncrementalHoareTripleChecker+Time [2021-11-07 09:28:02,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [462 Valid, 1411 Invalid, 39 Unknown, 0 Unchecked, 2.63ms Time], IncrementalHoareTripleChecker [8 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 117.79ms Time] [2021-11-07 09:28:02,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-11-07 09:28:02,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 201. [2021-11-07 09:28:02,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 195 states have (on average 1.3384615384615384) internal successors, (261), 200 states have internal predecessors, (261), 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) [2021-11-07 09:28:02,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 261 transitions. [2021-11-07 09:28:02,090 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 261 transitions. Word has length 66 [2021-11-07 09:28:02,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:28:02,090 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 261 transitions. [2021-11-07 09:28:02,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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) [2021-11-07 09:28:02,091 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 261 transitions. [2021-11-07 09:28:02,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 09:28:02,093 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:28:02,093 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:28:02,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 09:28:02,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-07 09:28:02,313 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 09:28:02,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:28:02,313 INFO L85 PathProgramCache]: Analyzing trace with hash -554146415, now seen corresponding path program 1 times [2021-11-07 09:28:02,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:28:02,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280074472] [2021-11-07 09:28:02,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:28:02,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:28:02,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:28:02,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:28:02,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:28:02,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280074472] [2021-11-07 09:28:02,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280074472] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:28:02,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:28:02,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 09:28:02,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429193520] [2021-11-07 09:28:02,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:28:02,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 09:28:02,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:28:02,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 09:28:02,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-07 09:28:02,751 INFO L87 Difference]: Start difference. First operand 201 states and 261 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 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) [2021-11-07 09:28:04,795 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:28:06,889 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:28:08,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:28:08,176 INFO L93 Difference]: Finished difference Result 405 states and 529 transitions. [2021-11-07 09:28:08,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 09:28:08,177 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 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 70 [2021-11-07 09:28:08,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:28:08,178 INFO L225 Difference]: With dead ends: 405 [2021-11-07 09:28:08,178 INFO L226 Difference]: Without dead ends: 242 [2021-11-07 09:28:08,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 442.14ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-07 09:28:08,180 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 443 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 18 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4818.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.79ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5098.76ms IncrementalHoareTripleChecker+Time [2021-11-07 09:28:08,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 1061 Invalid, 239 Unknown, 0 Unchecked, 8.79ms Time], IncrementalHoareTripleChecker [18 Valid, 219 Invalid, 2 Unknown, 0 Unchecked, 5098.76ms Time] [2021-11-07 09:28:08,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-11-07 09:28:08,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 219. [2021-11-07 09:28:08,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 213 states have (on average 1.3286384976525822) internal successors, (283), 218 states have internal predecessors, (283), 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) [2021-11-07 09:28:08,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 283 transitions. [2021-11-07 09:28:08,189 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 283 transitions. Word has length 70 [2021-11-07 09:28:08,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:28:08,189 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 283 transitions. [2021-11-07 09:28:08,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 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) [2021-11-07 09:28:08,190 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 283 transitions. [2021-11-07 09:28:08,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 09:28:08,191 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:28:08,191 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:28:08,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 09:28:08,191 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 09:28:08,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:28:08,192 INFO L85 PathProgramCache]: Analyzing trace with hash 875542541, now seen corresponding path program 1 times [2021-11-07 09:28:08,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:28:08,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303380151] [2021-11-07 09:28:08,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:28:08,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:28:08,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:28:08,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:28:08,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:28:08,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303380151] [2021-11-07 09:28:08,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303380151] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:28:08,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:28:08,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 09:28:08,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250193584] [2021-11-07 09:28:08,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:28:08,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 09:28:08,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:28:08,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 09:28:08,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 09:28:08,426 INFO L87 Difference]: Start difference. First operand 219 states and 283 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2021-11-07 09:28:08,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:28:08,577 INFO L93 Difference]: Finished difference Result 401 states and 523 transitions. [2021-11-07 09:28:08,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 09:28:08,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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 70 [2021-11-07 09:28:08,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:28:08,579 INFO L225 Difference]: With dead ends: 401 [2021-11-07 09:28:08,579 INFO L226 Difference]: Without dead ends: 217 [2021-11-07 09:28:08,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.13ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 09:28:08,580 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 227 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 124.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.84ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 137.13ms IncrementalHoareTripleChecker+Time [2021-11-07 09:28:08,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 459 Invalid, 47 Unknown, 0 Unchecked, 1.84ms Time], IncrementalHoareTripleChecker [7 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 137.13ms Time] [2021-11-07 09:28:08,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-07 09:28:08,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-07 09:28:08,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 211 states have (on average 1.3080568720379147) internal successors, (276), 216 states have internal predecessors, (276), 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) [2021-11-07 09:28:08,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 276 transitions. [2021-11-07 09:28:08,587 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 276 transitions. Word has length 70 [2021-11-07 09:28:08,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:28:08,588 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 276 transitions. [2021-11-07 09:28:08,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2021-11-07 09:28:08,588 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 276 transitions. [2021-11-07 09:28:08,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-07 09:28:08,589 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:28:08,589 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:28:08,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 09:28:08,589 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 09:28:08,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:28:08,590 INFO L85 PathProgramCache]: Analyzing trace with hash -162792069, now seen corresponding path program 1 times [2021-11-07 09:28:08,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:28:08,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010323231] [2021-11-07 09:28:08,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:28:08,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:28:08,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:28:08,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:28:08,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:28:08,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010323231] [2021-11-07 09:28:08,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010323231] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:28:08,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:28:08,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 09:28:08,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672807557] [2021-11-07 09:28:08,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:28:08,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 09:28:08,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:28:08,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 09:28:08,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:28:08,884 INFO L87 Difference]: Start difference. First operand 217 states and 276 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2021-11-07 09:28:10,926 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:28:13,059 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:28:13,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:28:13,942 INFO L93 Difference]: Finished difference Result 403 states and 516 transitions. [2021-11-07 09:28:13,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 09:28:13,943 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 74 [2021-11-07 09:28:13,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:28:13,944 INFO L225 Difference]: With dead ends: 403 [2021-11-07 09:28:13,944 INFO L226 Difference]: Without dead ends: 223 [2021-11-07 09:28:13,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 276.05ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 09:28:13,945 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 258 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 46 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4536.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.05ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4845.12ms IncrementalHoareTripleChecker+Time [2021-11-07 09:28:13,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 544 Invalid, 183 Unknown, 0 Unchecked, 4.05ms Time], IncrementalHoareTripleChecker [46 Valid, 135 Invalid, 2 Unknown, 0 Unchecked, 4845.12ms Time] [2021-11-07 09:28:13,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-11-07 09:28:13,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 217. [2021-11-07 09:28:13,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 211 states have (on average 1.2748815165876777) internal successors, (269), 216 states have internal predecessors, (269), 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) [2021-11-07 09:28:13,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 269 transitions. [2021-11-07 09:28:13,952 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 269 transitions. Word has length 74 [2021-11-07 09:28:13,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:28:13,953 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 269 transitions. [2021-11-07 09:28:13,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2021-11-07 09:28:13,953 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 269 transitions. [2021-11-07 09:28:13,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 09:28:13,953 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:28:13,953 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:28:13,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 09:28:13,954 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 09:28:13,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:28:13,954 INFO L85 PathProgramCache]: Analyzing trace with hash 523765980, now seen corresponding path program 1 times [2021-11-07 09:28:13,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:28:13,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452119043] [2021-11-07 09:28:13,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:28:13,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:28:14,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:28:14,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:28:14,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:28:14,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452119043] [2021-11-07 09:28:14,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452119043] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:28:14,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:28:14,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-07 09:28:14,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134233322] [2021-11-07 09:28:14,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:28:14,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 09:28:14,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:28:14,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 09:28:14,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-07 09:28:14,629 INFO L87 Difference]: Start difference. First operand 217 states and 269 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:28:16,665 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:28:18,821 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:28:19,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:28:19,853 INFO L93 Difference]: Finished difference Result 300 states and 376 transitions. [2021-11-07 09:28:19,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 09:28:19,854 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-07 09:28:19,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:28:19,855 INFO L225 Difference]: With dead ends: 300 [2021-11-07 09:28:19,855 INFO L226 Difference]: Without dead ends: 218 [2021-11-07 09:28:19,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 385.33ms TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-11-07 09:28:19,856 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 790 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 14 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4639.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.03ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4982.56ms IncrementalHoareTripleChecker+Time [2021-11-07 09:28:19,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [790 Valid, 682 Invalid, 188 Unknown, 0 Unchecked, 6.03ms Time], IncrementalHoareTripleChecker [14 Valid, 172 Invalid, 2 Unknown, 0 Unchecked, 4982.56ms Time] [2021-11-07 09:28:19,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-11-07 09:28:19,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 217. [2021-11-07 09:28:19,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 211 states have (on average 1.2701421800947867) internal successors, (268), 216 states have internal predecessors, (268), 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) [2021-11-07 09:28:19,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 268 transitions. [2021-11-07 09:28:19,868 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 268 transitions. Word has length 76 [2021-11-07 09:28:19,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:28:19,868 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 268 transitions. [2021-11-07 09:28:19,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:28:19,869 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 268 transitions. [2021-11-07 09:28:19,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-07 09:28:19,870 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:28:19,870 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:28:19,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 09:28:19,870 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 09:28:19,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:28:19,871 INFO L85 PathProgramCache]: Analyzing trace with hash 477407958, now seen corresponding path program 1 times [2021-11-07 09:28:19,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:28:19,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659914726] [2021-11-07 09:28:19,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:28:19,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:28:20,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:28:20,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:28:20,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:28:20,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659914726] [2021-11-07 09:28:20,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659914726] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:28:20,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:28:20,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 09:28:20,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300232025] [2021-11-07 09:28:20,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:28:20,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 09:28:20,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:28:20,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 09:28:20,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-07 09:28:20,560 INFO L87 Difference]: Start difference. First operand 217 states and 268 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2021-11-07 09:28:22,602 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:28:24,754 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:28:26,881 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:28:28,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:28:28,176 INFO L93 Difference]: Finished difference Result 274 states and 339 transitions. [2021-11-07 09:28:28,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 09:28:28,177 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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 79 [2021-11-07 09:28:28,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:28:28,178 INFO L225 Difference]: With dead ends: 274 [2021-11-07 09:28:28,178 INFO L226 Difference]: Without dead ends: 218 [2021-11-07 09:28:28,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 535.63ms TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-11-07 09:28:28,179 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 764 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 29 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6774.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.85ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7295.84ms IncrementalHoareTripleChecker+Time [2021-11-07 09:28:28,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [764 Valid, 813 Invalid, 233 Unknown, 0 Unchecked, 4.85ms Time], IncrementalHoareTripleChecker [29 Valid, 201 Invalid, 3 Unknown, 0 Unchecked, 7295.84ms Time] [2021-11-07 09:28:28,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-11-07 09:28:28,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 217. [2021-11-07 09:28:28,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 211 states have (on average 1.2654028436018958) internal successors, (267), 216 states have internal predecessors, (267), 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) [2021-11-07 09:28:28,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 267 transitions. [2021-11-07 09:28:28,187 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 267 transitions. Word has length 79 [2021-11-07 09:28:28,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:28:28,187 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 267 transitions. [2021-11-07 09:28:28,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2021-11-07 09:28:28,188 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 267 transitions. [2021-11-07 09:28:28,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 09:28:28,188 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:28:28,188 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:28:28,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 09:28:28,188 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 09:28:28,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:28:28,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1607773165, now seen corresponding path program 1 times [2021-11-07 09:28:28,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:28:28,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018512424] [2021-11-07 09:28:28,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:28:28,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:28:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:28:28,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:28:28,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:28:28,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018512424] [2021-11-07 09:28:28,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018512424] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:28:28,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:28:28,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 09:28:28,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208827290] [2021-11-07 09:28:28,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:28:28,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 09:28:28,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:28:28,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 09:28:28,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 09:28:28,445 INFO L87 Difference]: Start difference. First operand 217 states and 267 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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) [2021-11-07 09:28:30,487 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:28:31,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:28:31,024 INFO L93 Difference]: Finished difference Result 316 states and 397 transitions. [2021-11-07 09:28:31,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 09:28:31,024 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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 82 [2021-11-07 09:28:31,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:28:31,025 INFO L225 Difference]: With dead ends: 316 [2021-11-07 09:28:31,025 INFO L226 Difference]: Without dead ends: 217 [2021-11-07 09:28:31,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.23ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 09:28:31,026 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 0 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2389.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.94ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2556.92ms IncrementalHoareTripleChecker+Time [2021-11-07 09:28:31,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 610 Invalid, 107 Unknown, 0 Unchecked, 1.94ms Time], IncrementalHoareTripleChecker [6 Valid, 100 Invalid, 1 Unknown, 0 Unchecked, 2556.92ms Time] [2021-11-07 09:28:31,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-07 09:28:31,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-07 09:28:31,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 211 states have (on average 1.2511848341232228) internal successors, (264), 216 states have internal predecessors, (264), 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) [2021-11-07 09:28:31,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 264 transitions. [2021-11-07 09:28:31,034 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 264 transitions. Word has length 82 [2021-11-07 09:28:31,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:28:31,034 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 264 transitions. [2021-11-07 09:28:31,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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) [2021-11-07 09:28:31,035 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 264 transitions. [2021-11-07 09:28:31,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 09:28:31,035 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:28:31,035 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:28:31,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 09:28:31,036 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 09:28:31,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:28:31,036 INFO L85 PathProgramCache]: Analyzing trace with hash 2007135761, now seen corresponding path program 1 times [2021-11-07 09:28:31,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:28:31,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229457980] [2021-11-07 09:28:31,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:28:31,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:28:31,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:28:32,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:28:32,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:28:32,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229457980] [2021-11-07 09:28:32,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229457980] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:28:32,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:28:32,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-07 09:28:32,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144926386] [2021-11-07 09:28:32,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:28:32,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-07 09:28:32,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:28:32,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-07 09:28:32,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2021-11-07 09:28:32,739 INFO L87 Difference]: Start difference. First operand 217 states and 264 transitions. Second operand has 17 states, 17 states have (on average 4.823529411764706) internal successors, (82), 17 states have internal predecessors, (82), 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) [2021-11-07 09:28:34,778 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:28:36,949 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:28:39,109 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:28:41,291 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:28:43,430 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:28:45,624 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:28:47,810 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:28:49,997 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:28:54,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:28:54,374 INFO L93 Difference]: Finished difference Result 364 states and 447 transitions. [2021-11-07 09:28:54,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-07 09:28:54,376 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.823529411764706) internal successors, (82), 17 states have internal predecessors, (82), 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 82 [2021-11-07 09:28:54,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:28:54,377 INFO L225 Difference]: With dead ends: 364 [2021-11-07 09:28:54,377 INFO L226 Difference]: Without dead ends: 237 [2021-11-07 09:28:54,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 2512.16ms TimeCoverageRelationStatistics Valid=157, Invalid=713, Unknown=0, NotChecked=0, Total=870 [2021-11-07 09:28:54,378 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 300 mSDsluCounter, 1720 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 56 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18327.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 1935 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.96ms SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19853.52ms IncrementalHoareTripleChecker+Time [2021-11-07 09:28:54,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 1935 Invalid, 762 Unknown, 0 Unchecked, 9.96ms Time], IncrementalHoareTripleChecker [56 Valid, 698 Invalid, 8 Unknown, 0 Unchecked, 19853.52ms Time] [2021-11-07 09:28:54,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-11-07 09:28:54,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 220. [2021-11-07 09:28:54,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 214 states have (on average 1.2476635514018692) internal successors, (267), 219 states have internal predecessors, (267), 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) [2021-11-07 09:28:54,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 267 transitions. [2021-11-07 09:28:54,387 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 267 transitions. Word has length 82 [2021-11-07 09:28:54,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:28:54,388 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 267 transitions. [2021-11-07 09:28:54,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.823529411764706) internal successors, (82), 17 states have internal predecessors, (82), 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) [2021-11-07 09:28:54,388 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 267 transitions. [2021-11-07 09:28:54,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 09:28:54,389 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:28:54,389 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:28:54,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 09:28:54,389 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 09:28:54,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:28:54,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1722566291, now seen corresponding path program 1 times [2021-11-07 09:28:54,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:28:54,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493097721] [2021-11-07 09:28:54,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:28:54,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:28:54,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:28:55,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:28:55,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:28:55,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493097721] [2021-11-07 09:28:55,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493097721] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:28:55,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:28:55,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-07 09:28:55,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81761892] [2021-11-07 09:28:55,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:28:55,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 09:28:55,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:28:55,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 09:28:55,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2021-11-07 09:28:55,983 INFO L87 Difference]: Start difference. First operand 220 states and 267 transitions. Second operand has 15 states, 15 states have (on average 5.466666666666667) internal successors, (82), 15 states have internal predecessors, (82), 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) [2021-11-07 09:28:58,052 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:29:00,267 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:29:02,473 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:29:04,631 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:29:06,787 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:29:09,082 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:29:11,311 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:29:13,506 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:29:15,692 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:29:21,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:29:21,257 INFO L93 Difference]: Finished difference Result 369 states and 453 transitions. [2021-11-07 09:29:21,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-07 09:29:21,257 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.466666666666667) internal successors, (82), 15 states have internal predecessors, (82), 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 82 [2021-11-07 09:29:21,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:29:21,258 INFO L225 Difference]: With dead ends: 369 [2021-11-07 09:29:21,258 INFO L226 Difference]: Without dead ends: 259 [2021-11-07 09:29:21,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 4071.10ms TimeCoverageRelationStatistics Valid=224, Invalid=706, Unknown=0, NotChecked=0, Total=930 [2021-11-07 09:29:21,260 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 622 mSDsluCounter, 1972 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 42 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20221.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 2195 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.48ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21989.52ms IncrementalHoareTripleChecker+Time [2021-11-07 09:29:21,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [622 Valid, 2195 Invalid, 723 Unknown, 0 Unchecked, 9.48ms Time], IncrementalHoareTripleChecker [42 Valid, 672 Invalid, 9 Unknown, 0 Unchecked, 21989.52ms Time] [2021-11-07 09:29:21,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-11-07 09:29:21,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 242. [2021-11-07 09:29:21,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 236 states have (on average 1.2330508474576272) internal successors, (291), 241 states have internal predecessors, (291), 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) [2021-11-07 09:29:21,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 291 transitions. [2021-11-07 09:29:21,269 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 291 transitions. Word has length 82 [2021-11-07 09:29:21,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:29:21,269 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 291 transitions. [2021-11-07 09:29:21,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.466666666666667) internal successors, (82), 15 states have internal predecessors, (82), 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) [2021-11-07 09:29:21,269 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 291 transitions. [2021-11-07 09:29:21,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 09:29:21,270 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:29:21,270 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:29:21,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 09:29:21,270 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 09:29:21,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:29:21,271 INFO L85 PathProgramCache]: Analyzing trace with hash 904917841, now seen corresponding path program 1 times [2021-11-07 09:29:21,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:29:21,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364957631] [2021-11-07 09:29:21,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:29:21,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:29:21,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:29:21,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:29:21,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:29:21,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364957631] [2021-11-07 09:29:21,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364957631] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:29:21,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:29:21,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 09:29:21,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889198250] [2021-11-07 09:29:21,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:29:21,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 09:29:21,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:29:21,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 09:29:21,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-07 09:29:21,635 INFO L87 Difference]: Start difference. First operand 242 states and 291 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 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) [2021-11-07 09:29:23,680 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:29:24,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:29:24,386 INFO L93 Difference]: Finished difference Result 357 states and 438 transitions. [2021-11-07 09:29:24,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 09:29:24,387 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 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 82 [2021-11-07 09:29:24,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:29:24,388 INFO L225 Difference]: With dead ends: 357 [2021-11-07 09:29:24,388 INFO L226 Difference]: Without dead ends: 242 [2021-11-07 09:29:24,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 323.55ms TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-07 09:29:24,389 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 943 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2407.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.64ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2552.59ms IncrementalHoareTripleChecker+Time [2021-11-07 09:29:24,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [943 Valid, 515 Invalid, 146 Unknown, 0 Unchecked, 2.64ms Time], IncrementalHoareTripleChecker [30 Valid, 115 Invalid, 1 Unknown, 0 Unchecked, 2552.59ms Time] [2021-11-07 09:29:24,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-11-07 09:29:24,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2021-11-07 09:29:24,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 236 states have (on average 1.2245762711864407) internal successors, (289), 241 states have internal predecessors, (289), 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) [2021-11-07 09:29:24,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 289 transitions. [2021-11-07 09:29:24,422 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 289 transitions. Word has length 82 [2021-11-07 09:29:24,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:29:24,423 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 289 transitions. [2021-11-07 09:29:24,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 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) [2021-11-07 09:29:24,423 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 289 transitions. [2021-11-07 09:29:24,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 09:29:24,424 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:29:24,424 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:29:24,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 09:29:24,424 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 09:29:24,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:29:24,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1004900463, now seen corresponding path program 1 times [2021-11-07 09:29:24,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:29:24,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088043569] [2021-11-07 09:29:24,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:29:24,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:29:24,485 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 09:29:24,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [64615570] [2021-11-07 09:29:24,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:29:24,486 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:29:24,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:29:24,487 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) [2021-11-07 09:29:24,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 09:29:25,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:29:25,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 2766 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 09:29:25,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:29:25,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:29:25,468 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 09:29:25,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:29:25,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088043569] [2021-11-07 09:29:25,471 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 09:29:25,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64615570] [2021-11-07 09:29:25,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64615570] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:29:25,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:29:25,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 09:29:25,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889732771] [2021-11-07 09:29:25,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:29:25,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 09:29:25,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:29:25,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 09:29:25,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:29:25,476 INFO L87 Difference]: Start difference. First operand 242 states and 289 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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) [2021-11-07 09:29:25,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:29:25,675 INFO L93 Difference]: Finished difference Result 668 states and 799 transitions. [2021-11-07 09:29:25,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 09:29:25,676 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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 82 [2021-11-07 09:29:25,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:29:25,677 INFO L225 Difference]: With dead ends: 668 [2021-11-07 09:29:25,677 INFO L226 Difference]: Without dead ends: 451 [2021-11-07 09:29:25,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 109.20ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 09:29:25,678 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 410 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 113.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.18ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 122.05ms IncrementalHoareTripleChecker+Time [2021-11-07 09:29:25,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [410 Valid, 1041 Invalid, 39 Unknown, 0 Unchecked, 1.18ms Time], IncrementalHoareTripleChecker [8 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 122.05ms Time] [2021-11-07 09:29:25,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2021-11-07 09:29:25,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 248. [2021-11-07 09:29:25,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 242 states have (on average 1.21900826446281) internal successors, (295), 247 states have internal predecessors, (295), 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) [2021-11-07 09:29:25,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 295 transitions. [2021-11-07 09:29:25,689 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 295 transitions. Word has length 82 [2021-11-07 09:29:25,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:29:25,690 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 295 transitions. [2021-11-07 09:29:25,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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) [2021-11-07 09:29:25,690 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 295 transitions. [2021-11-07 09:29:25,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 09:29:25,690 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:29:25,691 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:29:25,716 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-07 09:29:25,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:29:25,907 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 09:29:25,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:29:25,908 INFO L85 PathProgramCache]: Analyzing trace with hash -581253741, now seen corresponding path program 1 times [2021-11-07 09:29:25,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:29:25,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647565092] [2021-11-07 09:29:25,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:29:25,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:29:25,974 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 09:29:25,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [542143433] [2021-11-07 09:29:25,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:29:25,974 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:29:25,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:29:25,975 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) [2021-11-07 09:29:25,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 09:29:26,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:29:26,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 2767 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-07 09:29:26,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:29:26,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:29:26,910 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 09:29:26,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:29:26,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647565092] [2021-11-07 09:29:26,910 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 09:29:26,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542143433] [2021-11-07 09:29:26,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542143433] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:29:26,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:29:26,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 09:29:26,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569306046] [2021-11-07 09:29:26,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:29:26,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 09:29:26,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:29:26,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 09:29:26,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 09:29:26,911 INFO L87 Difference]: Start difference. First operand 248 states and 295 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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) [2021-11-07 09:29:27,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:29:27,334 INFO L93 Difference]: Finished difference Result 454 states and 559 transitions. [2021-11-07 09:29:27,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 09:29:27,335 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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 82 [2021-11-07 09:29:27,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:29:27,336 INFO L225 Difference]: With dead ends: 454 [2021-11-07 09:29:27,336 INFO L226 Difference]: Without dead ends: 324 [2021-11-07 09:29:27,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 75.16ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 09:29:27,336 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 96 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 345.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.99ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 369.78ms IncrementalHoareTripleChecker+Time [2021-11-07 09:29:27,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 854 Invalid, 119 Unknown, 0 Unchecked, 1.99ms Time], IncrementalHoareTripleChecker [12 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 369.78ms Time] [2021-11-07 09:29:27,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2021-11-07 09:29:27,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 207. [2021-11-07 09:29:27,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 201 states have (on average 1.2338308457711442) internal successors, (248), 206 states have internal predecessors, (248), 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) [2021-11-07 09:29:27,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 248 transitions. [2021-11-07 09:29:27,346 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 248 transitions. Word has length 82 [2021-11-07 09:29:27,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:29:27,347 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 248 transitions. [2021-11-07 09:29:27,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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) [2021-11-07 09:29:27,347 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 248 transitions. [2021-11-07 09:29:27,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-07 09:29:27,348 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:29:27,348 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:29:27,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 09:29:27,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:29:27,571 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 09:29:27,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:29:27,572 INFO L85 PathProgramCache]: Analyzing trace with hash 824198886, now seen corresponding path program 1 times [2021-11-07 09:29:27,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:29:27,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596728522] [2021-11-07 09:29:27,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:29:27,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:29:27,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:29:29,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:29:29,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:29:29,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596728522] [2021-11-07 09:29:29,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596728522] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:29:29,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:29:29,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-07 09:29:29,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091467404] [2021-11-07 09:29:29,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:29:29,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-07 09:29:29,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:29:29,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-07 09:29:29,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2021-11-07 09:29:29,387 INFO L87 Difference]: Start difference. First operand 207 states and 248 transitions. Second operand has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 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) [2021-11-07 09:29:31,430 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:29:33,556 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:29:35,683 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:29:37,778 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:29:39,955 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:29:42,204 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:29:44,359 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:29:46,512 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:29:48,638 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:29:50,814 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:29:58,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:29:58,738 INFO L93 Difference]: Finished difference Result 451 states and 555 transitions. [2021-11-07 09:29:58,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-07 09:29:58,739 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 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 85 [2021-11-07 09:29:58,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:29:58,740 INFO L225 Difference]: With dead ends: 451 [2021-11-07 09:29:58,740 INFO L226 Difference]: Without dead ends: 357 [2021-11-07 09:29:58,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 5645.30ms TimeCoverageRelationStatistics Valid=301, Invalid=1259, Unknown=0, NotChecked=0, Total=1560 [2021-11-07 09:29:58,741 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 898 mSDsluCounter, 2338 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 57 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22975.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 2550 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.85ms SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24672.96ms IncrementalHoareTripleChecker+Time [2021-11-07 09:29:58,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [898 Valid, 2550 Invalid, 993 Unknown, 0 Unchecked, 13.85ms Time], IncrementalHoareTripleChecker [57 Valid, 926 Invalid, 10 Unknown, 0 Unchecked, 24672.96ms Time] [2021-11-07 09:29:58,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2021-11-07 09:29:58,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 256. [2021-11-07 09:29:58,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 250 states have (on average 1.212) internal successors, (303), 255 states have internal predecessors, (303), 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) [2021-11-07 09:29:58,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 303 transitions. [2021-11-07 09:29:58,753 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 303 transitions. Word has length 85 [2021-11-07 09:29:58,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:29:58,754 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 303 transitions. [2021-11-07 09:29:58,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.0) internal successors, (85), 17 states have internal predecessors, (85), 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) [2021-11-07 09:29:58,754 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 303 transitions. [2021-11-07 09:29:58,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-07 09:29:58,754 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:29:58,755 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:29:58,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-07 09:29:58,755 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 09:29:58,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:29:58,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1042354789, now seen corresponding path program 1 times [2021-11-07 09:29:58,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:29:58,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792187861] [2021-11-07 09:29:58,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:29:58,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:29:59,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:30:00,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:30:00,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:30:00,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792187861] [2021-11-07 09:30:00,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792187861] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 09:30:00,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598348277] [2021-11-07 09:30:00,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:30:00,764 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:30:00,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:30:00,765 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) [2021-11-07 09:30:00,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 09:30:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:30:01,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 2802 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-07 09:30:01,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:30:01,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 09:30:01,938 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 09:30:01,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598348277] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:30:01,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 09:30:01,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [19] total 21 [2021-11-07 09:30:01,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959619522] [2021-11-07 09:30:01,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:30:01,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 09:30:01,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:30:01,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 09:30:01,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2021-11-07 09:30:01,945 INFO L87 Difference]: Start difference. First operand 256 states and 303 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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) [2021-11-07 09:30:02,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:30:02,149 INFO L93 Difference]: Finished difference Result 488 states and 578 transitions. [2021-11-07 09:30:02,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 09:30:02,150 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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 86 [2021-11-07 09:30:02,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:30:02,151 INFO L225 Difference]: With dead ends: 488 [2021-11-07 09:30:02,151 INFO L226 Difference]: Without dead ends: 256 [2021-11-07 09:30:02,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1488.55ms TimeCoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2021-11-07 09:30:02,152 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 2 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 109.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.73ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 119.04ms IncrementalHoareTripleChecker+Time [2021-11-07 09:30:02,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 676 Invalid, 33 Unknown, 0 Unchecked, 0.73ms Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 119.04ms Time] [2021-11-07 09:30:02,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-11-07 09:30:02,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 247. [2021-11-07 09:30:02,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 241 states have (on average 1.1991701244813278) internal successors, (289), 246 states have internal predecessors, (289), 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) [2021-11-07 09:30:02,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 289 transitions. [2021-11-07 09:30:02,168 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 289 transitions. Word has length 86 [2021-11-07 09:30:02,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:30:02,168 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 289 transitions. [2021-11-07 09:30:02,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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) [2021-11-07 09:30:02,168 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 289 transitions. [2021-11-07 09:30:02,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-07 09:30:02,169 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:30:02,169 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:30:02,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 09:30:02,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-07 09:30:02,392 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 09:30:02,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:30:02,392 INFO L85 PathProgramCache]: Analyzing trace with hash 69711058, now seen corresponding path program 1 times [2021-11-07 09:30:02,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:30:02,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430320002] [2021-11-07 09:30:02,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:30:02,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:30:02,446 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 09:30:02,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1910966486] [2021-11-07 09:30:02,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:30:02,447 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:30:02,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:30:02,451 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) [2021-11-07 09:30:02,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 09:30:03,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:30:03,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 2923 conjuncts, 72 conjunts are in the unsatisfiable core [2021-11-07 09:30:03,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:30:03,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2021-11-07 09:30:03,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2021-11-07 09:30:05,202 INFO L354 Elim1Store]: treesize reduction 228, result has 4.6 percent of original size [2021-11-07 09:30:05,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 109 treesize of output 107 [2021-11-07 09:30:05,299 INFO L354 Elim1Store]: treesize reduction 160, result has 6.4 percent of original size [2021-11-07 09:30:05,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 99 treesize of output 93 [2021-11-07 09:30:05,344 INFO L354 Elim1Store]: treesize reduction 89, result has 11.0 percent of original size [2021-11-07 09:30:05,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 92 treesize of output 84 [2021-11-07 09:30:05,948 INFO L354 Elim1Store]: treesize reduction 57, result has 17.4 percent of original size [2021-11-07 09:30:05,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 138 treesize of output 96 [2021-11-07 09:30:06,028 INFO L354 Elim1Store]: treesize reduction 41, result has 22.6 percent of original size [2021-11-07 09:30:06,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 84 treesize of output 66 [2021-11-07 09:30:06,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:30:06,238 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 09:30:06,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:30:06,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430320002] [2021-11-07 09:30:06,239 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 09:30:06,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910966486] [2021-11-07 09:30:06,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910966486] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:30:06,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:30:06,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-07 09:30:06,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628372172] [2021-11-07 09:30:06,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:30:06,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 09:30:06,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:30:06,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 09:30:06,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-07 09:30:06,240 INFO L87 Difference]: Start difference. First operand 247 states and 289 transitions. Second operand has 14 states, 14 states have (on average 6.5) internal successors, (91), 14 states have internal predecessors, (91), 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) [2021-11-07 09:30:08,300 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:30:10,528 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:30:12,679 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:30:14,887 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:30:17,095 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:30:21,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:30:21,317 INFO L93 Difference]: Finished difference Result 418 states and 509 transitions. [2021-11-07 09:30:21,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 09:30:21,317 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.5) internal successors, (91), 14 states have internal predecessors, (91), 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 91 [2021-11-07 09:30:21,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:30:21,319 INFO L225 Difference]: With dead ends: 418 [2021-11-07 09:30:21,319 INFO L226 Difference]: Without dead ends: 324 [2021-11-07 09:30:21,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 2942.47ms TimeCoverageRelationStatistics Valid=213, Invalid=717, Unknown=0, NotChecked=0, Total=930 [2021-11-07 09:30:21,320 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 478 mSDsluCounter, 1807 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 30 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11842.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 1995 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.18ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 78 IncrementalHoareTripleChecker+Unchecked, 12889.82ms IncrementalHoareTripleChecker+Time [2021-11-07 09:30:21,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 1995 Invalid, 661 Unknown, 0 Unchecked, 10.18ms Time], IncrementalHoareTripleChecker [30 Valid, 548 Invalid, 5 Unknown, 78 Unchecked, 12889.82ms Time] [2021-11-07 09:30:21,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2021-11-07 09:30:21,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 195. [2021-11-07 09:30:21,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 189 states have (on average 1.2222222222222223) internal successors, (231), 194 states have internal predecessors, (231), 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) [2021-11-07 09:30:21,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 231 transitions. [2021-11-07 09:30:21,332 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 231 transitions. Word has length 91 [2021-11-07 09:30:21,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:30:21,332 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 231 transitions. [2021-11-07 09:30:21,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.5) internal successors, (91), 14 states have internal predecessors, (91), 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) [2021-11-07 09:30:21,333 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 231 transitions. [2021-11-07 09:30:21,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-07 09:30:21,333 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:30:21,333 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:30:21,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 09:30:21,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-07 09:30:21,547 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 09:30:21,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:30:21,548 INFO L85 PathProgramCache]: Analyzing trace with hash -52578388, now seen corresponding path program 1 times [2021-11-07 09:30:21,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:30:21,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787564447] [2021-11-07 09:30:21,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:30:21,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:30:21,603 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 09:30:21,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1138212030] [2021-11-07 09:30:21,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:30:21,604 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:30:21,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:30:21,605 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) [2021-11-07 09:30:21,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 09:32:59,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:32:59,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 2969 conjuncts, 240 conjunts are in the unsatisfiable core [2021-11-07 09:32:59,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:32:59,317 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 [2021-11-07 09:32:59,815 INFO L354 Elim1Store]: treesize reduction 133, result has 15.3 percent of original size [2021-11-07 09:32:59,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 45 treesize of output 53 [2021-11-07 09:33:00,660 INFO L354 Elim1Store]: treesize reduction 112, result has 15.8 percent of original size [2021-11-07 09:33:00,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 32 treesize of output 41 [2021-11-07 09:33:01,513 INFO L354 Elim1Store]: treesize reduction 78, result has 20.4 percent of original size [2021-11-07 09:33:01,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 35 treesize of output 45 [2021-11-07 09:33:02,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:33:02,717 INFO L354 Elim1Store]: treesize reduction 66, result has 32.7 percent of original size [2021-11-07 09:33:02,717 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 31 treesize of output 58 [2021-11-07 09:33:03,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 77 [2021-11-07 09:33:03,423 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 70 treesize of output 66 [2021-11-07 09:33:03,586 INFO L354 Elim1Store]: treesize reduction 156, result has 17.5 percent of original size [2021-11-07 09:33:03,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 75 treesize of output 92 [2021-11-07 09:33:04,973 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 11 treesize of output 7 [2021-11-07 09:33:24,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:33:24,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:33:24,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:33:25,267 INFO L354 Elim1Store]: treesize reduction 120, result has 44.7 percent of original size [2021-11-07 09:33:25,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 25 case distinctions, treesize of input 93 treesize of output 169 [2021-11-07 09:33:26,068 INFO L354 Elim1Store]: treesize reduction 57, result has 23.0 percent of original size [2021-11-07 09:33:26,069 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 95 treesize of output 94 [2021-11-07 09:33:26,132 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-07 09:33:26,132 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 1 case distinctions, treesize of input 91 treesize of output 75 [2021-11-07 09:33:26,190 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-07 09:33:26,191 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 1 case distinctions, treesize of input 76 treesize of output 56 [2021-11-07 09:33:33,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:33:33,732 INFO L354 Elim1Store]: treesize reduction 70, result has 23.1 percent of original size [2021-11-07 09:33:33,732 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 3 case distinctions, treesize of input 100 treesize of output 102 [2021-11-07 09:33:33,793 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-07 09:33:33,794 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 87 treesize of output 71 [2021-11-07 09:33:33,849 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-07 09:33:33,849 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 72 treesize of output 60 [2021-11-07 09:33:53,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-07 09:33:56,225 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-07 09:33:56,225 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 1 case distinctions, treesize of input 106 treesize of output 86 [2021-11-07 09:33:56,299 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-07 09:33:56,300 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 95 treesize of output 90 [2021-11-07 09:33:56,312 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 09:33:56,312 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 1 case distinctions, treesize of input 84 treesize of output 82 [2021-11-07 09:33:58,248 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 09:33:58,248 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 62 [2021-11-07 09:33:59,120 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 09:33:59,120 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 33 treesize of output 17 [2021-11-07 09:33:59,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:33:59,403 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 09:33:59,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:33:59,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787564447] [2021-11-07 09:33:59,404 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 09:33:59,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138212030] [2021-11-07 09:33:59,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138212030] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:33:59,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:33:59,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-11-07 09:33:59,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389911629] [2021-11-07 09:33:59,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:33:59,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-07 09:33:59,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:33:59,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-07 09:33:59,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=783, Unknown=4, NotChecked=0, Total=870 [2021-11-07 09:33:59,406 INFO L87 Difference]: Start difference. First operand 195 states and 231 transitions. Second operand has 30 states, 30 states have (on average 3.1333333333333333) internal successors, (94), 30 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:34:01,464 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:34:06,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:34:06,575 INFO L93 Difference]: Finished difference Result 428 states and 518 transitions. [2021-11-07 09:34:06,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-07 09:34:06,577 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.1333333333333333) internal successors, (94), 30 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-07 09:34:06,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:34:06,578 INFO L225 Difference]: With dead ends: 428 [2021-11-07 09:34:06,578 INFO L226 Difference]: Without dead ends: 325 [2021-11-07 09:34:06,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 33863.94ms TimeCoverageRelationStatistics Valid=89, Invalid=837, Unknown=4, NotChecked=0, Total=930 [2021-11-07 09:34:06,579 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 156 mSDsluCounter, 2540 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2471.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 2737 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.52ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 686 IncrementalHoareTripleChecker+Unchecked, 2724.66ms IncrementalHoareTripleChecker+Time [2021-11-07 09:34:06,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 2737 Invalid, 759 Unknown, 0 Unchecked, 8.52ms Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 1 Unknown, 686 Unchecked, 2724.66ms Time] [2021-11-07 09:34:06,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-11-07 09:34:06,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 239. [2021-11-07 09:34:06,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 233 states have (on average 1.1931330472103003) internal successors, (278), 238 states have internal predecessors, (278), 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) [2021-11-07 09:34:06,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 278 transitions. [2021-11-07 09:34:06,627 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 278 transitions. Word has length 94 [2021-11-07 09:34:06,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:34:06,627 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 278 transitions. [2021-11-07 09:34:06,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.1333333333333333) internal successors, (94), 30 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:34:06,627 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 278 transitions. [2021-11-07 09:34:06,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-07 09:34:06,628 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:34:06,628 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:34:06,828 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forcibly destroying the process [2021-11-07 09:34:06,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 137 [2021-11-07 09:34:06,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:34:06,869 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 09:34:06,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:34:06,870 INFO L85 PathProgramCache]: Analyzing trace with hash -21691158, now seen corresponding path program 1 times [2021-11-07 09:34:06,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:34:06,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487118310] [2021-11-07 09:34:06,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:34:06,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:34:06,934 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 09:34:06,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [552281016] [2021-11-07 09:34:06,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:34:06,934 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:34:06,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:34:06,935 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) [2021-11-07 09:34:06,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 09:34:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:34:07,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 2932 conjuncts, 74 conjunts are in the unsatisfiable core [2021-11-07 09:34:07,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 09:34:08,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:34:08,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-07 09:34:08,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:34:08,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-07 09:34:09,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:34:09,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:34:09,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:34:09,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:34:09,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:34:09,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:34:10,314 INFO L354 Elim1Store]: treesize reduction 467, result has 12.1 percent of original size [2021-11-07 09:34:10,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 165 treesize of output 197 [2021-11-07 09:34:10,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:34:10,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:34:10,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:34:10,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:34:10,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:34:10,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:34:10,790 INFO L354 Elim1Store]: treesize reduction 467, result has 12.1 percent of original size [2021-11-07 09:34:10,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 190 treesize of output 222 [2021-11-07 09:34:10,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:34:10,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:34:10,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:34:10,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:34:10,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:34:10,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:34:11,033 INFO L354 Elim1Store]: treesize reduction 196, result has 15.9 percent of original size [2021-11-07 09:34:11,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 17 case distinctions, treesize of input 207 treesize of output 226 [2021-11-07 09:34:11,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:34:11,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:34:11,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:34:11,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:34:11,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:34:11,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 09:34:11,261 INFO L354 Elim1Store]: treesize reduction 184, result has 16.7 percent of original size [2021-11-07 09:34:11,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 17 case distinctions, treesize of input 214 treesize of output 228 [2021-11-07 09:34:12,291 INFO L354 Elim1Store]: treesize reduction 25, result has 32.4 percent of original size [2021-11-07 09:34:12,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 76 [2021-11-07 09:34:12,386 INFO L354 Elim1Store]: treesize reduction 17, result has 41.4 percent of original size [2021-11-07 09:34:12,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 60 [2021-11-07 09:34:12,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:34:12,592 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 09:34:12,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:34:12,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487118310] [2021-11-07 09:34:12,592 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 09:34:12,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552281016] [2021-11-07 09:34:12,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552281016] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:34:12,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:34:12,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-07 09:34:12,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009706486] [2021-11-07 09:34:12,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:34:12,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 09:34:12,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:34:12,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 09:34:12,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-07 09:34:12,594 INFO L87 Difference]: Start difference. First operand 239 states and 278 transitions. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:34:14,643 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:34:16,842 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:34:18,994 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:34:21,127 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:34:25,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:34:25,207 INFO L93 Difference]: Finished difference Result 308 states and 367 transitions. [2021-11-07 09:34:25,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-07 09:34:25,209 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-07 09:34:25,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:34:25,210 INFO L225 Difference]: With dead ends: 308 [2021-11-07 09:34:25,210 INFO L226 Difference]: Without dead ends: 240 [2021-11-07 09:34:25,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 3325.63ms TimeCoverageRelationStatistics Valid=215, Invalid=715, Unknown=0, NotChecked=0, Total=930 [2021-11-07 09:34:25,211 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 290 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 30 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9557.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.98ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 10258.49ms IncrementalHoareTripleChecker+Time [2021-11-07 09:34:25,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 1705 Invalid, 511 Unknown, 0 Unchecked, 6.98ms Time], IncrementalHoareTripleChecker [30 Valid, 413 Invalid, 4 Unknown, 64 Unchecked, 10258.49ms Time] [2021-11-07 09:34:25,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-11-07 09:34:25,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 239. [2021-11-07 09:34:25,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 233 states have (on average 1.1888412017167382) internal successors, (277), 238 states have internal predecessors, (277), 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) [2021-11-07 09:34:25,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 277 transitions. [2021-11-07 09:34:25,225 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 277 transitions. Word has length 94 [2021-11-07 09:34:25,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:34:25,225 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 277 transitions. [2021-11-07 09:34:25,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:34:25,226 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 277 transitions. [2021-11-07 09:34:25,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-07 09:34:25,226 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:34:25,226 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:34:25,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-07 09:34:25,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:34:25,436 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 09:34:25,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:34:25,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1847424559, now seen corresponding path program 1 times [2021-11-07 09:34:25,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:34:25,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223596201] [2021-11-07 09:34:25,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:34:25,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:34:25,492 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 09:34:25,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1655080764] [2021-11-07 09:34:25,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:34:25,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 09:34:25,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 09:34:25,494 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) [2021-11-07 09:34:25,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process Killed by 15