./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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_array_list_clean_up_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5ba879a31f48d1f1f7d1dc7f928910bfb7ed0629fadb04ed483f94e60bfd5ef0 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:47:02,814 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:47:02,816 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:47:02,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:47:02,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:47:02,847 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:47:02,851 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:47:02,854 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:47:02,855 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:47:02,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:47:02,859 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:47:02,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:47:02,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:47:02,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:47:02,864 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:47:02,865 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:47:02,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:47:02,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:47:02,870 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:47:02,875 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:47:02,877 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:47:02,878 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:47:02,878 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:47:02,879 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:47:02,880 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:47:02,882 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:47:02,883 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:47:02,883 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:47:02,884 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:47:02,884 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:47:02,885 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:47:02,885 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:47:02,886 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:47:02,887 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:47:02,888 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:47:02,888 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:47:02,889 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:47:02,889 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:47:02,889 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:47:02,889 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:47:02,890 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:47:02,891 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:47:02,893 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 10:47:02,918 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:47:02,919 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:47:02,919 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:47:02,919 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:47:02,920 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:47:02,920 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:47:02,920 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:47:02,920 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:47:02,920 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:47:02,921 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:47:02,921 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:47:02,922 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:47:02,922 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:47:02,922 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:47:02,922 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:47:02,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:47:02,922 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:47:02,922 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:47:02,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:47:02,924 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:47:02,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:47:02,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:47:02,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:47:02,924 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:47:02,924 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:47:02,924 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:47:02,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:47:02,925 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:47:02,925 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:47:02,925 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:47:02,925 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ba879a31f48d1f1f7d1dc7f928910bfb7ed0629fadb04ed483f94e60bfd5ef0 [2022-07-12 10:47:03,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:47:03,130 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:47:03,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:47:03,133 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:47:03,134 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:47:03,135 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i [2022-07-12 10:47:03,202 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7bd0a779/361ea3e1f7394756ab0d99e87d2797b6/FLAGde3c55f3c [2022-07-12 10:47:03,785 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:47:03,785 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i [2022-07-12 10:47:03,812 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7bd0a779/361ea3e1f7394756ab0d99e87d2797b6/FLAGde3c55f3c [2022-07-12 10:47:04,220 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7bd0a779/361ea3e1f7394756ab0d99e87d2797b6 [2022-07-12 10:47:04,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:47:04,224 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:47:04,226 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:47:04,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:47:04,229 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:47:04,229 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:47:04" (1/1) ... [2022-07-12 10:47:04,230 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22cb14a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:47:04, skipping insertion in model container [2022-07-12 10:47:04,230 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:47:04" (1/1) ... [2022-07-12 10:47:04,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:47:04,330 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:47:04,501 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i[4497,4510] [2022-07-12 10:47:04,507 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i[4557,4570] [2022-07-12 10:47:04,988 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 10:47:05,045 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:05,048 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:05,049 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:05,051 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:05,052 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:05,065 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:05,065 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:05,067 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:05,068 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:05,068 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:05,069 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:05,069 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:05,070 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:05,261 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 10:47:05,262 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 10:47:05,262 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 10:47:05,263 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 10:47:05,263 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 10:47:05,264 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 10:47:05,264 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 10:47:05,264 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 10:47:05,265 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 10:47:05,265 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 10:47:05,336 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:05,341 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:05,428 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:47:05,446 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:47:05,455 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i[4497,4510] [2022-07-12 10:47:05,455 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i[4557,4570] [2022-07-12 10:47:05,482 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 10:47:05,518 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:05,518 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:05,518 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:05,519 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:05,519 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:05,523 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:05,523 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:05,524 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:05,524 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:05,525 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:05,525 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:05,526 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:05,526 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:05,551 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 10:47:05,551 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 10:47:05,552 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 10:47:05,552 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 10:47:05,553 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 10:47:05,553 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 10:47:05,553 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 10:47:05,554 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 10:47:05,554 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 10:47:05,554 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 10:47:05,564 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:05,567 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:05,583 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:47:05,741 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:47:05,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:47:05 WrapperNode [2022-07-12 10:47:05,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:47:05,743 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:47:05,743 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:47:05,743 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:47:05,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:47:05" (1/1) ... [2022-07-12 10:47:05,826 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:47:05" (1/1) ... [2022-07-12 10:47:05,878 INFO L137 Inliner]: procedures = 690, calls = 1553, calls flagged for inlining = 48, calls inlined = 7, statements flattened = 577 [2022-07-12 10:47:05,879 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:47:05,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:47:05,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:47:05,889 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:47:05,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:47:05" (1/1) ... [2022-07-12 10:47:05,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:47:05" (1/1) ... [2022-07-12 10:47:05,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:47:05" (1/1) ... [2022-07-12 10:47:05,900 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:47:05" (1/1) ... [2022-07-12 10:47:05,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:47:05" (1/1) ... [2022-07-12 10:47:05,921 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:47:05" (1/1) ... [2022-07-12 10:47:05,925 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:47:05" (1/1) ... [2022-07-12 10:47:05,932 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:47:05,948 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:47:05,948 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:47:05,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:47:05,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:47:05" (1/1) ... [2022-07-12 10:47:05,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:47:05,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:47:05,974 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) [2022-07-12 10:47:05,997 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 [2022-07-12 10:47:06,017 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-07-12 10:47:06,018 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-07-12 10:47:06,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:47:06,019 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-07-12 10:47:06,020 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-07-12 10:47:06,020 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-07-12 10:47:06,021 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-07-12 10:47:06,021 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-12 10:47:06,021 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-12 10:47:06,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:47:06,021 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-12 10:47:06,021 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-12 10:47:06,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 10:47:06,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 10:47:06,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 10:47:06,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:47:06,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 10:47:06,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:47:06,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:47:06,023 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-12 10:47:06,023 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-12 10:47:06,023 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-12 10:47:06,023 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-12 10:47:06,024 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-07-12 10:47:06,024 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-07-12 10:47:06,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-12 10:47:06,024 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-12 10:47:06,024 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 10:47:06,024 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 10:47:06,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:47:06,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 10:47:06,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 10:47:06,025 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-12 10:47:06,025 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-12 10:47:06,025 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-12 10:47:06,025 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-12 10:47:06,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:47:06,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:47:06,200 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:47:06,202 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:47:06,763 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:47:06,769 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:47:06,769 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-12 10:47:06,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:47:06 BoogieIcfgContainer [2022-07-12 10:47:06,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:47:06,772 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:47:06,772 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:47:06,775 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:47:06,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:47:04" (1/3) ... [2022-07-12 10:47:06,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f6dc4eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:47:06, skipping insertion in model container [2022-07-12 10:47:06,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:47:05" (2/3) ... [2022-07-12 10:47:06,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f6dc4eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:47:06, skipping insertion in model container [2022-07-12 10:47:06,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:47:06" (3/3) ... [2022-07-12 10:47:06,778 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_clean_up_harness.i [2022-07-12 10:47:06,788 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:47:06,789 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:47:06,825 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:47:06,829 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7d674c3a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@652b7d8 [2022-07-12 10:47:06,830 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 10:47:06,833 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 78 states have (on average 1.2564102564102564) internal successors, (98), 78 states have internal predecessors, (98), 22 states have call successors, (22), 13 states have call predecessors, (22), 13 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-12 10:47:06,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 10:47:06,841 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:47:06,841 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:47:06,843 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:47:06,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:47:06,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1460968734, now seen corresponding path program 1 times [2022-07-12 10:47:06,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:47:06,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265110629] [2022-07-12 10:47:06,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:47:06,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:47:07,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:07,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:47:07,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:07,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:47:07,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:07,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 10:47:07,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:07,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 10:47:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:07,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 10:47:07,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:07,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 10:47:07,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:07,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 10:47:07,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:07,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:47:07,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:07,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-12 10:47:07,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:07,418 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-12 10:47:07,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:47:07,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265110629] [2022-07-12 10:47:07,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265110629] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:47:07,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:47:07,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:47:07,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901819679] [2022-07-12 10:47:07,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:47:07,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:47:07,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:47:07,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:47:07,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:47:07,456 INFO L87 Difference]: Start difference. First operand has 114 states, 78 states have (on average 1.2564102564102564) internal successors, (98), 78 states have internal predecessors, (98), 22 states have call successors, (22), 13 states have call predecessors, (22), 13 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-12 10:47:07,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:47:07,643 INFO L93 Difference]: Finished difference Result 228 states and 297 transitions. [2022-07-12 10:47:07,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:47:07,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 65 [2022-07-12 10:47:07,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:47:07,652 INFO L225 Difference]: With dead ends: 228 [2022-07-12 10:47:07,653 INFO L226 Difference]: Without dead ends: 114 [2022-07-12 10:47:07,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:47:07,658 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 35 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:47:07,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 162 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 10:47:07,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-07-12 10:47:07,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 107. [2022-07-12 10:47:07,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 72 states have (on average 1.2083333333333333) internal successors, (87), 72 states have internal predecessors, (87), 22 states have call successors, (22), 13 states have call predecessors, (22), 12 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-07-12 10:47:07,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 130 transitions. [2022-07-12 10:47:07,695 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 130 transitions. Word has length 65 [2022-07-12 10:47:07,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:47:07,695 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 130 transitions. [2022-07-12 10:47:07,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-12 10:47:07,696 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 130 transitions. [2022-07-12 10:47:07,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-12 10:47:07,699 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:47:07,699 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:47:07,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:47:07,699 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:47:07,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:47:07,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1894775411, now seen corresponding path program 1 times [2022-07-12 10:47:07,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:47:07,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004156018] [2022-07-12 10:47:07,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:47:07,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:47:07,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:07,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:47:07,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:07,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:47:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:07,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 10:47:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:07,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 10:47:07,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:07,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 10:47:07,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:07,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 10:47:07,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:07,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 10:47:07,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:07,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:47:07,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:07,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:47:08,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:08,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 10:47:08,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:08,027 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-12 10:47:08,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:47:08,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004156018] [2022-07-12 10:47:08,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004156018] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:47:08,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:47:08,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:47:08,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020348968] [2022-07-12 10:47:08,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:47:08,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:47:08,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:47:08,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:47:08,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:47:08,031 INFO L87 Difference]: Start difference. First operand 107 states and 130 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 10:47:08,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:47:08,410 INFO L93 Difference]: Finished difference Result 199 states and 243 transitions. [2022-07-12 10:47:08,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:47:08,411 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 71 [2022-07-12 10:47:08,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:47:08,413 INFO L225 Difference]: With dead ends: 199 [2022-07-12 10:47:08,413 INFO L226 Difference]: Without dead ends: 126 [2022-07-12 10:47:08,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:47:08,414 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 88 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 10:47:08,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 322 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 10:47:08,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-07-12 10:47:08,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 109. [2022-07-12 10:47:08,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 73 states have (on average 1.2054794520547945) internal successors, (88), 74 states have internal predecessors, (88), 22 states have call successors, (22), 13 states have call predecessors, (22), 13 states have return successors, (22), 21 states have call predecessors, (22), 21 states have call successors, (22) [2022-07-12 10:47:08,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 132 transitions. [2022-07-12 10:47:08,426 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 132 transitions. Word has length 71 [2022-07-12 10:47:08,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:47:08,426 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 132 transitions. [2022-07-12 10:47:08,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 10:47:08,426 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 132 transitions. [2022-07-12 10:47:08,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-12 10:47:08,428 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:47:08,429 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:47:08,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:47:08,429 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:47:08,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:47:08,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1692678563, now seen corresponding path program 1 times [2022-07-12 10:47:08,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:47:08,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033039827] [2022-07-12 10:47:08,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:47:08,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:47:08,478 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:47:08,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1058370326] [2022-07-12 10:47:08,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:47:08,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:47:08,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:47:08,481 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) [2022-07-12 10:47:08,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 10:47:08,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:08,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 2123 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-12 10:47:08,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:47:08,913 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-12 10:47:08,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:47:08,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:47:08,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033039827] [2022-07-12 10:47:08,913 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:47:08,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058370326] [2022-07-12 10:47:08,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058370326] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:47:08,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:47:08,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:47:08,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276378008] [2022-07-12 10:47:08,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:47:08,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:47:08,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:47:08,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:47:08,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:47:08,915 INFO L87 Difference]: Start difference. First operand 109 states and 132 transitions. Second operand has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-12 10:47:08,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:47:08,959 INFO L93 Difference]: Finished difference Result 190 states and 229 transitions. [2022-07-12 10:47:08,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:47:08,959 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) Word has length 86 [2022-07-12 10:47:08,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:47:08,960 INFO L225 Difference]: With dead ends: 190 [2022-07-12 10:47:08,960 INFO L226 Difference]: Without dead ends: 117 [2022-07-12 10:47:08,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:47:08,961 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 4 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 10:47:08,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 877 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 10:47:08,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-07-12 10:47:08,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 113. [2022-07-12 10:47:08,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 76 states have (on average 1.1973684210526316) internal successors, (91), 77 states have internal predecessors, (91), 22 states have call successors, (22), 13 states have call predecessors, (22), 14 states have return successors, (23), 22 states have call predecessors, (23), 21 states have call successors, (23) [2022-07-12 10:47:08,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 136 transitions. [2022-07-12 10:47:08,972 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 136 transitions. Word has length 86 [2022-07-12 10:47:08,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:47:08,972 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 136 transitions. [2022-07-12 10:47:08,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-12 10:47:08,972 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 136 transitions. [2022-07-12 10:47:08,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-12 10:47:08,974 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:47:08,974 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:47:09,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 10:47:09,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:47:09,188 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:47:09,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:47:09,188 INFO L85 PathProgramCache]: Analyzing trace with hash -124616364, now seen corresponding path program 1 times [2022-07-12 10:47:09,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:47:09,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51221197] [2022-07-12 10:47:09,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:47:09,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:47:09,258 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:47:09,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [600492411] [2022-07-12 10:47:09,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:47:09,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:47:09,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:47:09,272 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) [2022-07-12 10:47:09,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 10:47:09,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:09,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 2126 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-12 10:47:09,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:47:09,647 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 10:47:09,647 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:47:09,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:47:09,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51221197] [2022-07-12 10:47:09,647 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:47:09,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600492411] [2022-07-12 10:47:09,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600492411] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:47:09,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:47:09,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:47:09,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106938028] [2022-07-12 10:47:09,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:47:09,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:47:09,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:47:09,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:47:09,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:47:09,649 INFO L87 Difference]: Start difference. First operand 113 states and 136 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 10:47:09,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:47:09,667 INFO L93 Difference]: Finished difference Result 134 states and 158 transitions. [2022-07-12 10:47:09,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 10:47:09,667 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 86 [2022-07-12 10:47:09,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:47:09,671 INFO L225 Difference]: With dead ends: 134 [2022-07-12 10:47:09,671 INFO L226 Difference]: Without dead ends: 114 [2022-07-12 10:47:09,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:47:09,674 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 2 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 10:47:09,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 382 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 10:47:09,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-07-12 10:47:09,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2022-07-12 10:47:09,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 77 states have (on average 1.1948051948051948) internal successors, (92), 78 states have internal predecessors, (92), 22 states have call successors, (22), 13 states have call predecessors, (22), 14 states have return successors, (23), 22 states have call predecessors, (23), 21 states have call successors, (23) [2022-07-12 10:47:09,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 137 transitions. [2022-07-12 10:47:09,682 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 137 transitions. Word has length 86 [2022-07-12 10:47:09,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:47:09,682 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 137 transitions. [2022-07-12 10:47:09,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 10:47:09,682 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 137 transitions. [2022-07-12 10:47:09,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-12 10:47:09,684 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:47:09,684 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:47:09,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 10:47:09,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-07-12 10:47:09,902 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:47:09,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:47:09,902 INFO L85 PathProgramCache]: Analyzing trace with hash -117447722, now seen corresponding path program 1 times [2022-07-12 10:47:09,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:47:09,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166665877] [2022-07-12 10:47:09,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:47:09,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:47:09,943 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:47:09,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [884109732] [2022-07-12 10:47:09,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:47:09,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:47:09,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:47:09,945 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) [2022-07-12 10:47:09,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 10:47:10,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:10,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 2145 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-12 10:47:10,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:47:10,265 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-12 10:47:10,265 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:47:10,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:47:10,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166665877] [2022-07-12 10:47:10,265 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:47:10,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884109732] [2022-07-12 10:47:10,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884109732] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:47:10,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:47:10,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:47:10,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980680419] [2022-07-12 10:47:10,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:47:10,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:47:10,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:47:10,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:47:10,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:47:10,267 INFO L87 Difference]: Start difference. First operand 114 states and 137 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 10:47:10,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:47:10,290 INFO L93 Difference]: Finished difference Result 166 states and 198 transitions. [2022-07-12 10:47:10,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 10:47:10,290 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 87 [2022-07-12 10:47:10,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:47:10,291 INFO L225 Difference]: With dead ends: 166 [2022-07-12 10:47:10,291 INFO L226 Difference]: Without dead ends: 119 [2022-07-12 10:47:10,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:47:10,292 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 7 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 10:47:10,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 370 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 10:47:10,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-07-12 10:47:10,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 115. [2022-07-12 10:47:10,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 78 states have (on average 1.1923076923076923) internal successors, (93), 79 states have internal predecessors, (93), 22 states have call successors, (22), 13 states have call predecessors, (22), 14 states have return successors, (23), 22 states have call predecessors, (23), 21 states have call successors, (23) [2022-07-12 10:47:10,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 138 transitions. [2022-07-12 10:47:10,313 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 138 transitions. Word has length 87 [2022-07-12 10:47:10,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:47:10,313 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 138 transitions. [2022-07-12 10:47:10,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 10:47:10,314 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 138 transitions. [2022-07-12 10:47:10,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-12 10:47:10,314 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:47:10,315 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:47:10,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 10:47:10,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:47:10,527 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:47:10,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:47:10,528 INFO L85 PathProgramCache]: Analyzing trace with hash 995990719, now seen corresponding path program 1 times [2022-07-12 10:47:10,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:47:10,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655453119] [2022-07-12 10:47:10,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:47:10,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:47:10,572 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:47:10,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [57027097] [2022-07-12 10:47:10,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:47:10,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:47:10,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:47:10,574 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) [2022-07-12 10:47:10,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 10:47:10,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:10,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 2148 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-12 10:47:10,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:47:10,980 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-12 10:47:10,980 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:47:10,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:47:10,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655453119] [2022-07-12 10:47:10,981 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:47:10,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57027097] [2022-07-12 10:47:10,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57027097] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:47:10,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:47:10,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:47:10,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199340000] [2022-07-12 10:47:10,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:47:10,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:47:10,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:47:10,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:47:10,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:47:10,983 INFO L87 Difference]: Start difference. First operand 115 states and 138 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 10:47:11,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:47:11,013 INFO L93 Difference]: Finished difference Result 160 states and 190 transitions. [2022-07-12 10:47:11,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:47:11,013 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 87 [2022-07-12 10:47:11,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:47:11,014 INFO L225 Difference]: With dead ends: 160 [2022-07-12 10:47:11,014 INFO L226 Difference]: Without dead ends: 117 [2022-07-12 10:47:11,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:47:11,015 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 4 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 10:47:11,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 506 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 10:47:11,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-07-12 10:47:11,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 115. [2022-07-12 10:47:11,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 78 states have (on average 1.1794871794871795) internal successors, (92), 79 states have internal predecessors, (92), 22 states have call successors, (22), 13 states have call predecessors, (22), 14 states have return successors, (23), 22 states have call predecessors, (23), 21 states have call successors, (23) [2022-07-12 10:47:11,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 137 transitions. [2022-07-12 10:47:11,021 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 137 transitions. Word has length 87 [2022-07-12 10:47:11,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:47:11,022 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 137 transitions. [2022-07-12 10:47:11,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 10:47:11,022 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 137 transitions. [2022-07-12 10:47:11,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-12 10:47:11,023 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:47:11,023 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:47:11,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 10:47:11,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:47:11,242 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:47:11,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:47:11,243 INFO L85 PathProgramCache]: Analyzing trace with hash -462422751, now seen corresponding path program 1 times [2022-07-12 10:47:11,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:47:11,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186178942] [2022-07-12 10:47:11,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:47:11,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:47:11,283 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:47:11,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1270757040] [2022-07-12 10:47:11,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:47:11,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:47:11,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:47:11,285 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) [2022-07-12 10:47:11,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 10:47:11,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:11,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 2152 conjuncts, 66 conjunts are in the unsatisfiable core [2022-07-12 10:47:11,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:47:12,702 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_#Ultimate.C_memset_#t~loopctr731_5| Int) (|#Ultimate.C_memset_#ptr.offset| Int)) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base|) (+ |#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr731_5|) |c_#Ultimate.C_memset_#value|)) |c_#memory_int|)) is different from true [2022-07-12 10:47:12,773 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-07-12 10:47:12,774 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 28 [2022-07-12 10:47:13,065 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 1 not checked. [2022-07-12 10:47:13,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:47:20,581 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-12 10:47:20,581 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-07-12 10:47:20,779 INFO L356 Elim1Store]: treesize reduction 16, result has 67.3 percent of original size [2022-07-12 10:47:20,780 INFO L390 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 68 [2022-07-12 10:47:21,004 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-12 10:47:21,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:47:21,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186178942] [2022-07-12 10:47:21,004 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:47:21,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270757040] [2022-07-12 10:47:21,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270757040] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:47:21,004 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:47:21,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14] total 30 [2022-07-12 10:47:21,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871197177] [2022-07-12 10:47:21,005 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 10:47:21,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-12 10:47:21,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:47:21,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-12 10:47:21,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=702, Unknown=1, NotChecked=54, Total=870 [2022-07-12 10:47:21,006 INFO L87 Difference]: Start difference. First operand 115 states and 137 transitions. Second operand has 30 states, 28 states have (on average 3.142857142857143) internal successors, (88), 27 states have internal predecessors, (88), 8 states have call successors, (23), 6 states have call predecessors, (23), 8 states have return successors, (22), 8 states have call predecessors, (22), 7 states have call successors, (22) [2022-07-12 10:47:30,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:47:30,814 INFO L93 Difference]: Finished difference Result 174 states and 216 transitions. [2022-07-12 10:47:30,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-12 10:47:30,815 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 3.142857142857143) internal successors, (88), 27 states have internal predecessors, (88), 8 states have call successors, (23), 6 states have call predecessors, (23), 8 states have return successors, (22), 8 states have call predecessors, (22), 7 states have call successors, (22) Word has length 90 [2022-07-12 10:47:30,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:47:30,816 INFO L225 Difference]: With dead ends: 174 [2022-07-12 10:47:30,816 INFO L226 Difference]: Without dead ends: 167 [2022-07-12 10:47:30,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 147 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=238, Invalid=1558, Unknown=14, NotChecked=82, Total=1892 [2022-07-12 10:47:30,818 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 143 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 1435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 511 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 10:47:30,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 991 Invalid, 1435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 862 Invalid, 0 Unknown, 511 Unchecked, 0.7s Time] [2022-07-12 10:47:30,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-07-12 10:47:30,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 159. [2022-07-12 10:47:30,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 111 states have (on average 1.1891891891891893) internal successors, (132), 114 states have internal predecessors, (132), 28 states have call successors, (28), 15 states have call predecessors, (28), 19 states have return successors, (38), 29 states have call predecessors, (38), 27 states have call successors, (38) [2022-07-12 10:47:30,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 198 transitions. [2022-07-12 10:47:30,827 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 198 transitions. Word has length 90 [2022-07-12 10:47:30,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:47:30,827 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 198 transitions. [2022-07-12 10:47:30,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 3.142857142857143) internal successors, (88), 27 states have internal predecessors, (88), 8 states have call successors, (23), 6 states have call predecessors, (23), 8 states have return successors, (22), 8 states have call predecessors, (22), 7 states have call successors, (22) [2022-07-12 10:47:30,828 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 198 transitions. [2022-07-12 10:47:30,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-12 10:47:30,829 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:47:30,829 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:47:30,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 10:47:31,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:47:31,051 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:47:31,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:47:31,051 INFO L85 PathProgramCache]: Analyzing trace with hash 134736496, now seen corresponding path program 1 times [2022-07-12 10:47:31,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:47:31,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473243983] [2022-07-12 10:47:31,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:47:31,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:47:31,093 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:47:31,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [216287653] [2022-07-12 10:47:31,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:47:31,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:47:31,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:47:31,108 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) [2022-07-12 10:47:31,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 10:47:31,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:31,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 2182 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 10:47:31,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:47:31,520 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-12 10:47:31,521 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:47:31,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:47:31,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473243983] [2022-07-12 10:47:31,521 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:47:31,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216287653] [2022-07-12 10:47:31,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216287653] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:47:31,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:47:31,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:47:31,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915940169] [2022-07-12 10:47:31,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:47:31,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:47:31,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:47:31,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:47:31,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:47:31,523 INFO L87 Difference]: Start difference. First operand 159 states and 198 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-12 10:47:31,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:47:31,665 INFO L93 Difference]: Finished difference Result 232 states and 286 transitions. [2022-07-12 10:47:31,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:47:31,666 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 93 [2022-07-12 10:47:31,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:47:31,667 INFO L225 Difference]: With dead ends: 232 [2022-07-12 10:47:31,667 INFO L226 Difference]: Without dead ends: 157 [2022-07-12 10:47:31,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:47:31,668 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 157 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:47:31,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 431 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 10:47:31,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-07-12 10:47:31,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2022-07-12 10:47:31,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 110 states have (on average 1.1818181818181819) internal successors, (130), 112 states have internal predecessors, (130), 28 states have call successors, (28), 15 states have call predecessors, (28), 18 states have return successors, (36), 29 states have call predecessors, (36), 27 states have call successors, (36) [2022-07-12 10:47:31,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 194 transitions. [2022-07-12 10:47:31,676 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 194 transitions. Word has length 93 [2022-07-12 10:47:31,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:47:31,676 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 194 transitions. [2022-07-12 10:47:31,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-12 10:47:31,677 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 194 transitions. [2022-07-12 10:47:31,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-12 10:47:31,678 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:47:31,678 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:47:31,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 10:47:31,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:47:31,891 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:47:31,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:47:31,892 INFO L85 PathProgramCache]: Analyzing trace with hash -910834864, now seen corresponding path program 2 times [2022-07-12 10:47:31,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:47:31,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774730039] [2022-07-12 10:47:31,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:47:31,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:47:31,928 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:47:31,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [104126621] [2022-07-12 10:47:31,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:47:31,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:47:31,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:47:31,930 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) [2022-07-12 10:47:31,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 10:47:32,384 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:47:32,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:47:32,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 2159 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-12 10:47:32,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:47:32,420 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-12 10:47:32,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:47:32,525 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-12 10:47:32,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:47:32,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774730039] [2022-07-12 10:47:32,525 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:47:32,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104126621] [2022-07-12 10:47:32,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104126621] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:47:32,525 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:47:32,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-07-12 10:47:32,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945152561] [2022-07-12 10:47:32,526 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 10:47:32,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:47:32,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:47:32,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:47:32,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:47:32,526 INFO L87 Difference]: Start difference. First operand 157 states and 194 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-12 10:47:32,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:47:32,600 INFO L93 Difference]: Finished difference Result 237 states and 292 transitions. [2022-07-12 10:47:32,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 10:47:32,601 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 93 [2022-07-12 10:47:32,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:47:32,602 INFO L225 Difference]: With dead ends: 237 [2022-07-12 10:47:32,602 INFO L226 Difference]: Without dead ends: 169 [2022-07-12 10:47:32,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:47:32,602 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 37 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 10:47:32,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 507 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 10:47:32,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-07-12 10:47:32,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 165. [2022-07-12 10:47:32,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 118 states have (on average 1.1864406779661016) internal successors, (140), 120 states have internal predecessors, (140), 28 states have call successors, (28), 15 states have call predecessors, (28), 18 states have return successors, (36), 29 states have call predecessors, (36), 27 states have call successors, (36) [2022-07-12 10:47:32,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 204 transitions. [2022-07-12 10:47:32,614 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 204 transitions. Word has length 93 [2022-07-12 10:47:32,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:47:32,614 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 204 transitions. [2022-07-12 10:47:32,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-12 10:47:32,614 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 204 transitions. [2022-07-12 10:47:32,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-12 10:47:32,615 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:47:32,615 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:47:32,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-12 10:47:32,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:47:32,832 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:47:32,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:47:32,832 INFO L85 PathProgramCache]: Analyzing trace with hash 966825052, now seen corresponding path program 1 times [2022-07-12 10:47:32,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:47:32,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744174184] [2022-07-12 10:47:32,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:47:32,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:47:32,883 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:47:32,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1153436419] [2022-07-12 10:47:32,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:47:32,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:47:32,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:47:32,885 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) [2022-07-12 10:47:32,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-12 10:47:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:33,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 2323 conjuncts, 54 conjunts are in the unsatisfiable core [2022-07-12 10:47:33,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:47:33,325 INFO L390 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 [2022-07-12 10:47:33,476 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-12 10:47:33,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:47:33,713 INFO L390 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 27 treesize of output 23 [2022-07-12 10:47:33,780 INFO L390 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 14 treesize of output 12 [2022-07-12 10:47:33,784 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2022-07-12 10:47:33,927 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-12 10:47:33,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:47:33,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744174184] [2022-07-12 10:47:33,927 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:47:33,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153436419] [2022-07-12 10:47:33,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153436419] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:47:33,928 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:47:33,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2022-07-12 10:47:33,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753312031] [2022-07-12 10:47:33,928 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 10:47:33,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-12 10:47:33,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:47:33,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-12 10:47:33,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2022-07-12 10:47:33,929 INFO L87 Difference]: Start difference. First operand 165 states and 204 transitions. Second operand has 23 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 20 states have internal predecessors, (81), 7 states have call successors, (25), 3 states have call predecessors, (25), 6 states have return successors, (24), 9 states have call predecessors, (24), 6 states have call successors, (24) [2022-07-12 10:47:34,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:47:34,461 INFO L93 Difference]: Finished difference Result 177 states and 216 transitions. [2022-07-12 10:47:34,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:47:34,462 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 20 states have internal predecessors, (81), 7 states have call successors, (25), 3 states have call predecessors, (25), 6 states have return successors, (24), 9 states have call predecessors, (24), 6 states have call successors, (24) Word has length 108 [2022-07-12 10:47:34,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:47:34,463 INFO L225 Difference]: With dead ends: 177 [2022-07-12 10:47:34,463 INFO L226 Difference]: Without dead ends: 170 [2022-07-12 10:47:34,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=742, Unknown=0, NotChecked=0, Total=870 [2022-07-12 10:47:34,464 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 39 mSDsluCounter, 1424 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 1541 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 104 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 10:47:34,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 1541 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 385 Invalid, 0 Unknown, 104 Unchecked, 0.3s Time] [2022-07-12 10:47:34,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-07-12 10:47:34,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 148. [2022-07-12 10:47:34,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 106 states have (on average 1.179245283018868) internal successors, (125), 107 states have internal predecessors, (125), 24 states have call successors, (24), 15 states have call predecessors, (24), 17 states have return successors, (29), 25 states have call predecessors, (29), 23 states have call successors, (29) [2022-07-12 10:47:34,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 178 transitions. [2022-07-12 10:47:34,471 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 178 transitions. Word has length 108 [2022-07-12 10:47:34,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:47:34,472 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 178 transitions. [2022-07-12 10:47:34,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 20 states have internal predecessors, (81), 7 states have call successors, (25), 3 states have call predecessors, (25), 6 states have return successors, (24), 9 states have call predecessors, (24), 6 states have call successors, (24) [2022-07-12 10:47:34,472 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 178 transitions. [2022-07-12 10:47:34,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-12 10:47:34,473 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:47:34,473 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:47:34,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-12 10:47:34,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-12 10:47:34,684 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:47:34,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:47:34,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1784691315, now seen corresponding path program 1 times [2022-07-12 10:47:34,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:47:34,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083993202] [2022-07-12 10:47:34,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:47:34,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:47:34,730 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:47:34,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [630425073] [2022-07-12 10:47:34,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:47:34,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:47:34,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:47:34,748 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) [2022-07-12 10:47:34,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-12 10:47:34,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:34,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 2334 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-12 10:47:34,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:47:35,015 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-12 10:47:35,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:47:35,130 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-12 10:47:35,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:47:35,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083993202] [2022-07-12 10:47:35,130 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:47:35,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630425073] [2022-07-12 10:47:35,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630425073] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:47:35,131 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:47:35,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-07-12 10:47:35,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787674839] [2022-07-12 10:47:35,131 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 10:47:35,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:47:35,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:47:35,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:47:35,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:47:35,132 INFO L87 Difference]: Start difference. First operand 148 states and 178 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-12 10:47:35,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:47:35,199 INFO L93 Difference]: Finished difference Result 183 states and 218 transitions. [2022-07-12 10:47:35,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 10:47:35,201 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 117 [2022-07-12 10:47:35,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:47:35,201 INFO L225 Difference]: With dead ends: 183 [2022-07-12 10:47:35,202 INFO L226 Difference]: Without dead ends: 151 [2022-07-12 10:47:35,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:47:35,202 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 9 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 10:47:35,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 381 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 10:47:35,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-07-12 10:47:35,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2022-07-12 10:47:35,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 109 states have (on average 1.1743119266055047) internal successors, (128), 110 states have internal predecessors, (128), 24 states have call successors, (24), 15 states have call predecessors, (24), 17 states have return successors, (29), 25 states have call predecessors, (29), 23 states have call successors, (29) [2022-07-12 10:47:35,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 181 transitions. [2022-07-12 10:47:35,210 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 181 transitions. Word has length 117 [2022-07-12 10:47:35,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:47:35,210 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 181 transitions. [2022-07-12 10:47:35,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-12 10:47:35,211 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 181 transitions. [2022-07-12 10:47:35,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-12 10:47:35,212 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:47:35,212 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:47:35,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-12 10:47:35,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:47:35,430 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:47:35,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:47:35,430 INFO L85 PathProgramCache]: Analyzing trace with hash -564772413, now seen corresponding path program 1 times [2022-07-12 10:47:35,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:47:35,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176107430] [2022-07-12 10:47:35,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:47:35,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:47:35,469 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:47:35,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [138526248] [2022-07-12 10:47:35,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:47:35,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:47:35,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:47:35,470 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:47:35,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-12 10:47:35,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:35,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 2387 conjuncts, 69 conjunts are in the unsatisfiable core [2022-07-12 10:47:35,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:47:36,028 INFO L390 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 [2022-07-12 10:47:36,047 INFO L356 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-07-12 10:47:36,047 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2022-07-12 10:47:36,079 INFO L356 Elim1Store]: treesize reduction 60, result has 22.1 percent of original size [2022-07-12 10:47:36,080 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 33 [2022-07-12 10:47:36,118 INFO L356 Elim1Store]: treesize reduction 104, result has 20.0 percent of original size [2022-07-12 10:47:36,118 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 44 [2022-07-12 10:47:36,420 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-12 10:47:36,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:47:36,786 INFO L390 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 111 treesize of output 105 [2022-07-12 10:47:37,179 INFO L390 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 34 treesize of output 32 [2022-07-12 10:47:37,182 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 382 treesize of output 378 [2022-07-12 10:47:37,214 INFO L390 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 34 treesize of output 32 [2022-07-12 10:47:37,216 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 10:47:37,220 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 184 treesize of output 180 [2022-07-12 10:47:37,236 INFO L390 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 34 treesize of output 32 [2022-07-12 10:47:37,238 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 10:47:37,238 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 10:47:37,241 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 80 [2022-07-12 10:47:37,253 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2022-07-12 10:47:37,256 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 10:47:37,257 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 10:47:37,257 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 10:47:37,259 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2022-07-12 10:47:37,544 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-12 10:47:37,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:47:37,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176107430] [2022-07-12 10:47:37,545 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:47:37,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138526248] [2022-07-12 10:47:37,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138526248] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:47:37,545 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:47:37,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 31 [2022-07-12 10:47:37,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800678080] [2022-07-12 10:47:37,545 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 10:47:37,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-12 10:47:37,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:47:37,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-12 10:47:37,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=821, Unknown=0, NotChecked=0, Total=930 [2022-07-12 10:47:37,547 INFO L87 Difference]: Start difference. First operand 151 states and 181 transitions. Second operand has 31 states, 31 states have (on average 3.0) internal successors, (93), 28 states have internal predecessors, (93), 7 states have call successors, (25), 3 states have call predecessors, (25), 6 states have return successors, (24), 9 states have call predecessors, (24), 6 states have call successors, (24) [2022-07-12 10:47:38,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:47:38,430 INFO L93 Difference]: Finished difference Result 165 states and 196 transitions. [2022-07-12 10:47:38,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-12 10:47:38,430 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.0) internal successors, (93), 28 states have internal predecessors, (93), 7 states have call successors, (25), 3 states have call predecessors, (25), 6 states have return successors, (24), 9 states have call predecessors, (24), 6 states have call successors, (24) Word has length 114 [2022-07-12 10:47:38,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:47:38,431 INFO L225 Difference]: With dead ends: 165 [2022-07-12 10:47:38,431 INFO L226 Difference]: Without dead ends: 158 [2022-07-12 10:47:38,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=167, Invalid=1239, Unknown=0, NotChecked=0, Total=1406 [2022-07-12 10:47:38,432 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 68 mSDsluCounter, 1769 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 1891 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 219 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 10:47:38,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 1891 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 628 Invalid, 0 Unknown, 219 Unchecked, 0.6s Time] [2022-07-12 10:47:38,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-07-12 10:47:38,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 156. [2022-07-12 10:47:38,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 113 states have (on average 1.168141592920354) internal successors, (132), 115 states have internal predecessors, (132), 24 states have call successors, (24), 15 states have call predecessors, (24), 18 states have return successors, (30), 25 states have call predecessors, (30), 23 states have call successors, (30) [2022-07-12 10:47:38,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 186 transitions. [2022-07-12 10:47:38,466 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 186 transitions. Word has length 114 [2022-07-12 10:47:38,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:47:38,467 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 186 transitions. [2022-07-12 10:47:38,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.0) internal successors, (93), 28 states have internal predecessors, (93), 7 states have call successors, (25), 3 states have call predecessors, (25), 6 states have return successors, (24), 9 states have call predecessors, (24), 6 states have call successors, (24) [2022-07-12 10:47:38,467 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 186 transitions. [2022-07-12 10:47:38,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-12 10:47:38,469 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:47:38,470 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:47:38,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-12 10:47:38,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-12 10:47:38,689 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:47:38,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:47:38,689 INFO L85 PathProgramCache]: Analyzing trace with hash -645338938, now seen corresponding path program 2 times [2022-07-12 10:47:38,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:47:38,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743240077] [2022-07-12 10:47:38,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:47:38,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:47:38,729 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:47:38,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1677768619] [2022-07-12 10:47:38,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:47:38,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:47:38,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:47:38,731 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:47:38,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-12 10:47:39,384 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:47:39,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:47:39,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 2398 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-12 10:47:39,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:47:39,514 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-12 10:47:39,515 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:47:39,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:47:39,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743240077] [2022-07-12 10:47:39,515 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:47:39,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677768619] [2022-07-12 10:47:39,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677768619] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:47:39,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:47:39,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-12 10:47:39,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537455108] [2022-07-12 10:47:39,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:47:39,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-12 10:47:39,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:47:39,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-12 10:47:39,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-07-12 10:47:39,516 INFO L87 Difference]: Start difference. First operand 156 states and 186 transitions. Second operand has 15 states, 15 states have (on average 4.8) internal successors, (72), 11 states have internal predecessors, (72), 3 states have call successors, (15), 2 states have call predecessors, (15), 7 states have return successors, (15), 6 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-12 10:47:39,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:47:39,721 INFO L93 Difference]: Finished difference Result 214 states and 252 transitions. [2022-07-12 10:47:39,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 10:47:39,722 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.8) internal successors, (72), 11 states have internal predecessors, (72), 3 states have call successors, (15), 2 states have call predecessors, (15), 7 states have return successors, (15), 6 states have call predecessors, (15), 3 states have call successors, (15) Word has length 123 [2022-07-12 10:47:39,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:47:39,723 INFO L225 Difference]: With dead ends: 214 [2022-07-12 10:47:39,723 INFO L226 Difference]: Without dead ends: 156 [2022-07-12 10:47:39,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2022-07-12 10:47:39,724 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 15 mSDsluCounter, 1656 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:47:39,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1790 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 10:47:39,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-07-12 10:47:39,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 150. [2022-07-12 10:47:39,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 109 states have (on average 1.1743119266055047) internal successors, (128), 111 states have internal predecessors, (128), 23 states have call successors, (23), 15 states have call predecessors, (23), 17 states have return successors, (26), 23 states have call predecessors, (26), 22 states have call successors, (26) [2022-07-12 10:47:39,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 177 transitions. [2022-07-12 10:47:39,732 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 177 transitions. Word has length 123 [2022-07-12 10:47:39,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:47:39,732 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 177 transitions. [2022-07-12 10:47:39,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.8) internal successors, (72), 11 states have internal predecessors, (72), 3 states have call successors, (15), 2 states have call predecessors, (15), 7 states have return successors, (15), 6 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-12 10:47:39,733 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 177 transitions. [2022-07-12 10:47:39,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-12 10:47:39,734 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:47:39,734 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:47:39,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-12 10:47:39,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-12 10:47:39,956 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:47:39,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:47:39,957 INFO L85 PathProgramCache]: Analyzing trace with hash -582835346, now seen corresponding path program 2 times [2022-07-12 10:47:39,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:47:39,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927374940] [2022-07-12 10:47:39,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:47:39,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:47:39,998 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:47:39,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1570988613] [2022-07-12 10:47:39,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:47:39,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:47:39,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:47:40,000 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:47:40,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-12 10:47:40,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:47:40,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:47:40,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 2394 conjuncts, 86 conjunts are in the unsatisfiable core [2022-07-12 10:47:40,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:47:40,668 INFO L390 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 14 treesize of output 10 [2022-07-12 10:47:40,689 INFO L356 Elim1Store]: treesize reduction 32, result has 23.8 percent of original size [2022-07-12 10:47:40,689 INFO L390 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 25 treesize of output 24 [2022-07-12 10:47:40,730 INFO L356 Elim1Store]: treesize reduction 76, result has 21.6 percent of original size [2022-07-12 10:47:40,730 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 37 [2022-07-12 10:47:40,774 INFO L356 Elim1Store]: treesize reduction 104, result has 20.0 percent of original size [2022-07-12 10:47:40,774 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 44 [2022-07-12 10:47:41,156 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 7 proven. 28 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-12 10:47:41,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:47:41,728 INFO L390 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 111 treesize of output 105 [2022-07-12 10:47:42,163 INFO L390 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 34 treesize of output 32 [2022-07-12 10:47:42,165 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 380 treesize of output 376 [2022-07-12 10:47:42,182 INFO L390 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 34 treesize of output 32 [2022-07-12 10:47:42,183 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 10:47:42,186 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 184 treesize of output 180 [2022-07-12 10:47:42,198 INFO L390 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 34 treesize of output 32 [2022-07-12 10:47:42,200 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 10:47:42,200 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 10:47:42,202 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 80 [2022-07-12 10:47:42,214 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2022-07-12 10:47:42,216 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 10:47:42,216 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 10:47:42,217 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 10:47:42,218 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2022-07-12 10:47:42,563 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-12 10:47:42,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:47:42,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927374940] [2022-07-12 10:47:42,563 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:47:42,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570988613] [2022-07-12 10:47:42,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570988613] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:47:42,563 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:47:42,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 16] total 37 [2022-07-12 10:47:42,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608890739] [2022-07-12 10:47:42,563 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 10:47:42,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-07-12 10:47:42,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:47:42,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-07-12 10:47:42,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1206, Unknown=0, NotChecked=0, Total=1332 [2022-07-12 10:47:42,565 INFO L87 Difference]: Start difference. First operand 150 states and 177 transitions. Second operand has 37 states, 36 states have (on average 2.888888888888889) internal successors, (104), 33 states have internal predecessors, (104), 8 states have call successors, (25), 3 states have call predecessors, (25), 8 states have return successors, (24), 10 states have call predecessors, (24), 7 states have call successors, (24) [2022-07-12 10:47:43,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:47:43,982 INFO L93 Difference]: Finished difference Result 165 states and 192 transitions. [2022-07-12 10:47:43,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-12 10:47:43,982 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.888888888888889) internal successors, (104), 33 states have internal predecessors, (104), 8 states have call successors, (25), 3 states have call predecessors, (25), 8 states have return successors, (24), 10 states have call predecessors, (24), 7 states have call successors, (24) Word has length 117 [2022-07-12 10:47:43,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:47:43,983 INFO L225 Difference]: With dead ends: 165 [2022-07-12 10:47:43,983 INFO L226 Difference]: Without dead ends: 158 [2022-07-12 10:47:43,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=195, Invalid=1875, Unknown=0, NotChecked=0, Total=2070 [2022-07-12 10:47:43,984 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 48 mSDsluCounter, 2239 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 2355 SdHoareTripleChecker+Invalid, 1385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 307 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 10:47:43,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 2355 Invalid, 1385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1059 Invalid, 0 Unknown, 307 Unchecked, 1.0s Time] [2022-07-12 10:47:43,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-07-12 10:47:43,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 153. [2022-07-12 10:47:43,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 112 states have (on average 1.1696428571428572) internal successors, (131), 114 states have internal predecessors, (131), 23 states have call successors, (23), 15 states have call predecessors, (23), 17 states have return successors, (26), 23 states have call predecessors, (26), 22 states have call successors, (26) [2022-07-12 10:47:43,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 180 transitions. [2022-07-12 10:47:43,992 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 180 transitions. Word has length 117 [2022-07-12 10:47:43,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:47:43,992 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 180 transitions. [2022-07-12 10:47:43,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.888888888888889) internal successors, (104), 33 states have internal predecessors, (104), 8 states have call successors, (25), 3 states have call predecessors, (25), 8 states have return successors, (24), 10 states have call predecessors, (24), 7 states have call successors, (24) [2022-07-12 10:47:43,993 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 180 transitions. [2022-07-12 10:47:43,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-12 10:47:43,993 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:47:43,994 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:47:44,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-12 10:47:44,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-12 10:47:44,215 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:47:44,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:47:44,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1824760349, now seen corresponding path program 3 times [2022-07-12 10:47:44,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:47:44,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626860663] [2022-07-12 10:47:44,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:47:44,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:47:44,259 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:47:44,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1158515112] [2022-07-12 10:47:44,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 10:47:44,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:47:44,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:47:44,261 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:47:44,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-12 10:47:45,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-12 10:47:45,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:47:45,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 2365 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-12 10:47:45,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:47:45,102 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-07-12 10:47:45,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:47:45,250 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-07-12 10:47:45,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:47:45,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626860663] [2022-07-12 10:47:45,250 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:47:45,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158515112] [2022-07-12 10:47:45,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158515112] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:47:45,251 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:47:45,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-07-12 10:47:45,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189668837] [2022-07-12 10:47:45,251 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 10:47:45,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:47:45,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:47:45,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:47:45,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:47:45,252 INFO L87 Difference]: Start difference. First operand 153 states and 180 transitions. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 10:47:45,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:47:45,562 INFO L93 Difference]: Finished difference Result 191 states and 224 transitions. [2022-07-12 10:47:45,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 10:47:45,563 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 120 [2022-07-12 10:47:45,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:47:45,564 INFO L225 Difference]: With dead ends: 191 [2022-07-12 10:47:45,564 INFO L226 Difference]: Without dead ends: 159 [2022-07-12 10:47:45,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=211, Unknown=0, NotChecked=0, Total=342 [2022-07-12 10:47:45,565 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 24 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:47:45,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 759 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 10:47:45,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-07-12 10:47:45,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2022-07-12 10:47:45,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 118 states have (on average 1.1610169491525424) internal successors, (137), 120 states have internal predecessors, (137), 23 states have call successors, (23), 15 states have call predecessors, (23), 17 states have return successors, (26), 23 states have call predecessors, (26), 22 states have call successors, (26) [2022-07-12 10:47:45,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 186 transitions. [2022-07-12 10:47:45,577 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 186 transitions. Word has length 120 [2022-07-12 10:47:45,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:47:45,577 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 186 transitions. [2022-07-12 10:47:45,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 10:47:45,577 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 186 transitions. [2022-07-12 10:47:45,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-12 10:47:45,578 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:47:45,578 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:47:45,601 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-07-12 10:47:45,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-12 10:47:45,801 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:47:45,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:47:45,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1651611811, now seen corresponding path program 4 times [2022-07-12 10:47:45,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:47:45,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749045505] [2022-07-12 10:47:45,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:47:45,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:47:45,839 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:47:45,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [550895517] [2022-07-12 10:47:45,840 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-12 10:47:45,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:47:45,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:47:45,841 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:47:45,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-12 10:47:46,330 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-12 10:47:46,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:47:46,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 2515 conjuncts, 99 conjunts are in the unsatisfiable core [2022-07-12 10:47:46,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:47:46,426 INFO L390 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 14 treesize of output 10 [2022-07-12 10:47:46,442 INFO L356 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-07-12 10:47:46,442 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2022-07-12 10:47:46,471 INFO L356 Elim1Store]: treesize reduction 56, result has 23.3 percent of original size [2022-07-12 10:47:46,471 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 32 [2022-07-12 10:47:46,510 INFO L356 Elim1Store]: treesize reduction 104, result has 20.0 percent of original size [2022-07-12 10:47:46,511 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 44 [2022-07-12 10:47:46,582 INFO L356 Elim1Store]: treesize reduction 164, result has 17.6 percent of original size [2022-07-12 10:47:46,582 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 48 treesize of output 56 [2022-07-12 10:47:46,680 INFO L356 Elim1Store]: treesize reduction 236, result has 15.7 percent of original size [2022-07-12 10:47:46,681 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 case distinctions, treesize of input 57 treesize of output 68 [2022-07-12 10:47:46,816 INFO L356 Elim1Store]: treesize reduction 320, result has 14.2 percent of original size [2022-07-12 10:47:46,817 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 66 treesize of output 80 [2022-07-12 10:47:46,979 INFO L356 Elim1Store]: treesize reduction 416, result has 13.0 percent of original size [2022-07-12 10:47:46,979 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 75 treesize of output 92 [2022-07-12 10:47:55,202 INFO L356 Elim1Store]: treesize reduction 416, result has 13.0 percent of original size [2022-07-12 10:47:55,202 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 75 treesize of output 92 [2022-07-12 10:48:03,372 INFO L356 Elim1Store]: treesize reduction 416, result has 13.0 percent of original size [2022-07-12 10:48:03,372 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 75 treesize of output 92 [2022-07-12 10:48:12,325 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 15 proven. 63 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-07-12 10:48:12,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:48:15,612 INFO L390 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 277910 treesize of output 277718 [2022-07-12 10:48:26,551 WARN L233 SmtUtils]: Spent 10.94s on a formula simplification. DAG size of input: 292 DAG size of output: 265 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-12 10:48:45,011 WARN L233 SmtUtils]: Spent 6.70s on a formula simplification. DAG size of input: 228 DAG size of output: 232 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)