./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_u8_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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_byte_cursor_read_u8_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 f1ac591932d47e9b0b8902b9705db38e4b5e721c8f02110220ca6714b79582bb --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:04:13,577 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:04:13,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:04:13,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:04:13,610 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:04:13,612 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:04:13,613 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:04:13,615 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:04:13,617 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:04:13,620 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:04:13,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:04:13,622 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:04:13,622 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:04:13,624 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:04:13,625 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:04:13,627 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:04:13,627 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:04:13,628 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:04:13,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:04:13,634 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:04:13,635 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:04:13,636 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:04:13,637 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:04:13,638 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:04:13,642 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:04:13,642 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:04:13,643 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:04:13,644 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:04:13,644 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:04:13,644 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:04:13,645 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:04:13,646 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:04:13,647 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:04:13,647 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:04:13,648 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:04:13,648 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:04:13,649 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:04:13,649 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:04:13,649 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:04:13,650 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:04:13,650 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:04:13,651 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:04:13,673 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:04:13,674 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:04:13,674 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:04:13,674 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:04:13,675 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:04:13,675 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:04:13,676 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:04:13,676 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:04:13,676 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:04:13,676 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:04:13,677 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:04:13,677 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:04:13,677 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:04:13,677 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:04:13,677 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:04:13,678 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:04:13,678 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:04:13,678 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:04:13,678 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:04:13,678 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:04:13,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:04:13,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:04:13,679 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:04:13,679 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:04:13,679 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:04:13,679 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:04:13,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:04:13,680 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:04:13,680 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:04:13,680 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:04:13,681 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:04:13,681 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1ac591932d47e9b0b8902b9705db38e4b5e721c8f02110220ca6714b79582bb [2021-12-14 17:04:13,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:04:13,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:04:13,890 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:04:13,890 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:04:13,891 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:04:13,892 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_u8_harness.i [2021-12-14 17:04:13,941 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a900f6f9/6f69be47a8904ce8b421a3c02ae79d7d/FLAG4397dff89 [2021-12-14 17:04:14,465 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:04:14,466 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_u8_harness.i [2021-12-14 17:04:14,502 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a900f6f9/6f69be47a8904ce8b421a3c02ae79d7d/FLAG4397dff89 [2021-12-14 17:04:14,679 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a900f6f9/6f69be47a8904ce8b421a3c02ae79d7d [2021-12-14 17:04:14,681 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:04:14,682 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:04:14,683 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:04:14,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:04:14,686 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:04:14,687 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:04:14" (1/1) ... [2021-12-14 17:04:14,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d530589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:04:14, skipping insertion in model container [2021-12-14 17:04:14,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:04:14" (1/1) ... [2021-12-14 17:04:14,692 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:04:14,771 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:04:14,991 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_byte_cursor_read_u8_harness.i[4497,4510] [2021-12-14 17:04:14,996 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_byte_cursor_read_u8_harness.i[4557,4570] [2021-12-14 17:04:15,467 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:15,469 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:15,471 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:15,472 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:15,473 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:15,483 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:15,485 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:15,487 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:15,488 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:15,683 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-14 17:04:15,684 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-14 17:04:15,684 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-14 17:04:15,685 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-14 17:04:15,686 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-14 17:04:15,686 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-14 17:04:15,687 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-14 17:04:15,687 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-14 17:04:15,688 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-14 17:04:15,688 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-14 17:04:15,768 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-14 17:04:15,868 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:15,869 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:15,952 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:04:15,987 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:04:16,013 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_byte_cursor_read_u8_harness.i[4497,4510] [2021-12-14 17:04:16,014 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_byte_cursor_read_u8_harness.i[4557,4570] [2021-12-14 17:04:16,039 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:16,039 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:16,040 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:16,040 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:16,040 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:16,046 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:16,048 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:16,050 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:16,050 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:16,074 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-14 17:04:16,075 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-14 17:04:16,076 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-14 17:04:16,076 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-14 17:04:16,077 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-14 17:04:16,077 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-14 17:04:16,077 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-14 17:04:16,078 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-14 17:04:16,078 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-14 17:04:16,078 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-14 17:04:16,096 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-14 17:04:16,149 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:16,149 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:04:16,169 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:04:16,327 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:04:16,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:04:16 WrapperNode [2021-12-14 17:04:16,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:04:16,328 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:04:16,328 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:04:16,328 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:04:16,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:04:16" (1/1) ... [2021-12-14 17:04:16,418 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:04:16" (1/1) ... [2021-12-14 17:04:16,471 INFO L137 Inliner]: procedures = 690, calls = 2631, calls flagged for inlining = 61, calls inlined = 10, statements flattened = 948 [2021-12-14 17:04:16,472 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:04:16,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:04:16,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:04:16,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:04:16,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:04:16" (1/1) ... [2021-12-14 17:04:16,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:04:16" (1/1) ... [2021-12-14 17:04:16,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:04:16" (1/1) ... [2021-12-14 17:04:16,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:04:16" (1/1) ... [2021-12-14 17:04:16,502 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:04:16" (1/1) ... [2021-12-14 17:04:16,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:04:16" (1/1) ... [2021-12-14 17:04:16,509 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:04:16" (1/1) ... [2021-12-14 17:04:16,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:04:16,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:04:16,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:04:16,517 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:04:16,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:04:16" (1/1) ... [2021-12-14 17:04:16,522 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:04:16,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:04:16,538 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 17:04:16,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 17:04:16,572 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_read [2021-12-14 17:04:16,572 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_read [2021-12-14 17:04:16,572 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-12-14 17:04:16,572 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-12-14 17:04:16,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:04:16,573 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-14 17:04:16,573 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-14 17:04:16,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2021-12-14 17:04:16,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-14 17:04:16,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-14 17:04:16,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:04:16,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-14 17:04:16,573 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-14 17:04:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-14 17:04:16,574 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-14 17:04:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:04:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:04:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:04:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:04:16,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:04:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-14 17:04:16,574 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-14 17:04:16,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-14 17:04:16,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-14 17:04:16,575 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 17:04:16,575 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 17:04:16,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:04:16,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:04:16,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:04:16,575 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-14 17:04:16,576 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-14 17:04:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:04:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2021-12-14 17:04:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:04:16,798 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:04:16,799 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:04:17,676 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:04:17,682 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:04:17,682 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 17:04:17,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:04:17 BoogieIcfgContainer [2021-12-14 17:04:17,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:04:17,687 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:04:17,687 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:04:17,689 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:04:17,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:04:14" (1/3) ... [2021-12-14 17:04:17,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b459597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:04:17, skipping insertion in model container [2021-12-14 17:04:17,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:04:16" (2/3) ... [2021-12-14 17:04:17,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b459597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:04:17, skipping insertion in model container [2021-12-14 17:04:17,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:04:17" (3/3) ... [2021-12-14 17:04:17,691 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_read_u8_harness.i [2021-12-14 17:04:17,698 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:04:17,698 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:04:17,734 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:04:17,742 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 17:04:17,752 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:04:17,765 INFO L276 IsEmpty]: Start isEmpty. Operand has 127 states, 79 states have (on average 1.240506329113924) internal successors, (98), 80 states have internal predecessors, (98), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-12-14 17:04:17,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-14 17:04:17,775 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:04:17,775 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:04:17,776 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:04:17,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:04:17,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1117310367, now seen corresponding path program 1 times [2021-12-14 17:04:17,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:04:17,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224341823] [2021-12-14 17:04:17,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:17,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:04:18,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:04:18,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:04:18,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-14 17:04:18,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:04:18,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:04:18,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:04:18,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-14 17:04:18,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-14 17:04:18,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:04:18,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-14 17:04:18,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-14 17:04:18,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-14 17:04:18,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-14 17:04:18,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 17:04:18,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-14 17:04:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-14 17:04:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,384 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2021-12-14 17:04:18,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:04:18,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224341823] [2021-12-14 17:04:18,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224341823] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:04:18,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:04:18,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 17:04:18,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185987483] [2021-12-14 17:04:18,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:04:18,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:04:18,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:04:18,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:04:18,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:04:18,413 INFO L87 Difference]: Start difference. First operand has 127 states, 79 states have (on average 1.240506329113924) internal successors, (98), 80 states have internal predecessors, (98), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) 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, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 17:04:18,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:04:18,649 INFO L93 Difference]: Finished difference Result 251 states and 369 transitions. [2021-12-14 17:04:18,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:04:18,665 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, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 107 [2021-12-14 17:04:18,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:04:18,671 INFO L225 Difference]: With dead ends: 251 [2021-12-14 17:04:18,671 INFO L226 Difference]: Without dead ends: 121 [2021-12-14 17:04:18,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:04:18,678 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 38 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:04:18,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 217 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 17:04:18,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-12-14 17:04:18,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2021-12-14 17:04:18,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 74 states have (on average 1.2162162162162162) internal successors, (90), 75 states have internal predecessors, (90), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2021-12-14 17:04:18,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 165 transitions. [2021-12-14 17:04:18,723 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 165 transitions. Word has length 107 [2021-12-14 17:04:18,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:04:18,723 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 165 transitions. [2021-12-14 17:04:18,724 INFO L471 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, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 17:04:18,724 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 165 transitions. [2021-12-14 17:04:18,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-14 17:04:18,729 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:04:18,729 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:04:18,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 17:04:18,736 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:04:18,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:04:18,737 INFO L85 PathProgramCache]: Analyzing trace with hash 2122434847, now seen corresponding path program 1 times [2021-12-14 17:04:18,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:04:18,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311687091] [2021-12-14 17:04:18,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:18,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:04:18,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:04:18,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:04:18,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-14 17:04:18,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:04:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:04:18,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:04:18,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-14 17:04:18,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:18,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-14 17:04:18,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:19,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:04:19,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:19,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-14 17:04:19,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:19,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-14 17:04:19,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:19,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-14 17:04:19,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:19,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-14 17:04:19,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:19,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 17:04:19,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:19,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-14 17:04:19,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:19,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-14 17:04:19,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:19,089 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2021-12-14 17:04:19,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:04:19,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311687091] [2021-12-14 17:04:19,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311687091] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:04:19,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56702944] [2021-12-14 17:04:19,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:19,090 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:04:19,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:04:19,092 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:04:19,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 17:04:19,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:19,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 2660 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-14 17:04:19,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:04:19,766 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2021-12-14 17:04:19,767 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:04:19,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56702944] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:04:19,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:04:19,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2021-12-14 17:04:19,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928883967] [2021-12-14 17:04:19,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:04:19,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:04:19,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:04:19,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:04:19,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-14 17:04:19,771 INFO L87 Difference]: Start difference. First operand 121 states and 165 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-14 17:04:19,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:04:19,947 INFO L93 Difference]: Finished difference Result 226 states and 319 transitions. [2021-12-14 17:04:19,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 17:04:19,948 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 107 [2021-12-14 17:04:19,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:04:19,955 INFO L225 Difference]: With dead ends: 226 [2021-12-14 17:04:19,956 INFO L226 Difference]: Without dead ends: 124 [2021-12-14 17:04:19,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-12-14 17:04:19,963 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 186 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:04:19,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 444 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 17:04:19,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-12-14 17:04:19,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-12-14 17:04:19,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 76 states have (on average 1.2105263157894737) internal successors, (92), 78 states have internal predecessors, (92), 38 states have call successors, (38), 8 states have call predecessors, (38), 9 states have return successors, (45), 37 states have call predecessors, (45), 37 states have call successors, (45) [2021-12-14 17:04:19,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 175 transitions. [2021-12-14 17:04:19,988 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 175 transitions. Word has length 107 [2021-12-14 17:04:19,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:04:19,988 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 175 transitions. [2021-12-14 17:04:19,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-14 17:04:19,989 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 175 transitions. [2021-12-14 17:04:19,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-14 17:04:19,997 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:04:19,997 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:04:20,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-14 17:04:20,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:04:20,204 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:04:20,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:04:20,204 INFO L85 PathProgramCache]: Analyzing trace with hash -924186918, now seen corresponding path program 1 times [2021-12-14 17:04:20,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:04:20,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143761919] [2021-12-14 17:04:20,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:20,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:04:20,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:20,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:04:20,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:20,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:04:20,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:20,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-14 17:04:20,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:20,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:04:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:20,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-14 17:04:20,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:20,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:04:20,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:20,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 17:04:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:20,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:04:20,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:20,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-14 17:04:20,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:20,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-14 17:04:20,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:20,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-14 17:04:20,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:20,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 17:04:20,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:20,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-14 17:04:20,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:20,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 17:04:20,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:20,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-14 17:04:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:20,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 17:04:20,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:20,512 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-12-14 17:04:20,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:04:20,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143761919] [2021-12-14 17:04:20,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143761919] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:04:20,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606226076] [2021-12-14 17:04:20,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:20,514 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:04:20,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:04:20,515 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:04:20,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-14 17:04:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:20,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 2665 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-14 17:04:20,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:04:21,104 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-12-14 17:04:21,104 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:04:21,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606226076] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:04:21,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:04:21,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2021-12-14 17:04:21,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651563407] [2021-12-14 17:04:21,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:04:21,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 17:04:21,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:04:21,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 17:04:21,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-12-14 17:04:21,106 INFO L87 Difference]: Start difference. First operand 124 states and 175 transitions. Second operand has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-14 17:04:21,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:04:21,274 INFO L93 Difference]: Finished difference Result 216 states and 306 transitions. [2021-12-14 17:04:21,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:04:21,275 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 109 [2021-12-14 17:04:21,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:04:21,277 INFO L225 Difference]: With dead ends: 216 [2021-12-14 17:04:21,277 INFO L226 Difference]: Without dead ends: 124 [2021-12-14 17:04:21,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2021-12-14 17:04:21,278 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 199 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:04:21,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 451 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 17:04:21,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-12-14 17:04:21,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-12-14 17:04:21,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 76 states have (on average 1.2105263157894737) internal successors, (92), 78 states have internal predecessors, (92), 38 states have call successors, (38), 8 states have call predecessors, (38), 9 states have return successors, (43), 37 states have call predecessors, (43), 37 states have call successors, (43) [2021-12-14 17:04:21,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 173 transitions. [2021-12-14 17:04:21,290 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 173 transitions. Word has length 109 [2021-12-14 17:04:21,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:04:21,290 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 173 transitions. [2021-12-14 17:04:21,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-14 17:04:21,291 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 173 transitions. [2021-12-14 17:04:21,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-14 17:04:21,292 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:04:21,292 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 3, 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] [2021-12-14 17:04:21,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-14 17:04:21,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-14 17:04:21,499 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:04:21,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:04:21,500 INFO L85 PathProgramCache]: Analyzing trace with hash 277081791, now seen corresponding path program 2 times [2021-12-14 17:04:21,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:04:21,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758739594] [2021-12-14 17:04:21,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:21,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:04:21,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:21,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:04:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:21,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:04:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:21,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-14 17:04:21,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:21,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:04:21,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:21,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-14 17:04:21,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:21,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:04:21,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:21,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 17:04:21,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:21,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:04:21,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:21,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-14 17:04:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:21,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-14 17:04:21,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:21,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 17:04:21,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:21,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-14 17:04:21,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:21,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 17:04:21,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:21,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 17:04:21,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:21,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-14 17:04:21,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:21,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-14 17:04:21,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:21,786 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-12-14 17:04:21,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:04:21,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758739594] [2021-12-14 17:04:21,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758739594] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:04:21,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229663546] [2021-12-14 17:04:21,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-14 17:04:21,787 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:04:21,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:04:21,788 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:04:21,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-14 17:04:22,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-14 17:04:22,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 17:04:22,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 2670 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-14 17:04:22,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:04:22,529 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-12-14 17:04:22,530 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:04:22,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229663546] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:04:22,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:04:22,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 20 [2021-12-14 17:04:22,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873743704] [2021-12-14 17:04:22,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:04:22,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-14 17:04:22,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:04:22,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-14 17:04:22,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2021-12-14 17:04:22,532 INFO L87 Difference]: Start difference. First operand 124 states and 173 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 states have internal predecessors, (40), 6 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2021-12-14 17:04:22,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:04:22,880 INFO L93 Difference]: Finished difference Result 211 states and 295 transitions. [2021-12-14 17:04:22,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 17:04:22,881 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 states have internal predecessors, (40), 6 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) Word has length 111 [2021-12-14 17:04:22,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:04:22,882 INFO L225 Difference]: With dead ends: 211 [2021-12-14 17:04:22,882 INFO L226 Difference]: Without dead ends: 124 [2021-12-14 17:04:22,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=609, Unknown=0, NotChecked=0, Total=702 [2021-12-14 17:04:22,883 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 231 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 17:04:22,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 790 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 17:04:22,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-12-14 17:04:22,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-12-14 17:04:22,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 76 states have (on average 1.2105263157894737) internal successors, (92), 78 states have internal predecessors, (92), 38 states have call successors, (38), 8 states have call predecessors, (38), 9 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2021-12-14 17:04:22,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 168 transitions. [2021-12-14 17:04:22,893 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 168 transitions. Word has length 111 [2021-12-14 17:04:22,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:04:22,893 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 168 transitions. [2021-12-14 17:04:22,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 states have internal predecessors, (40), 6 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2021-12-14 17:04:22,894 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 168 transitions. [2021-12-14 17:04:22,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-14 17:04:22,894 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:04:22,895 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:04:22,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-14 17:04:23,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:04:23,111 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:04:23,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:04:23,112 INFO L85 PathProgramCache]: Analyzing trace with hash -172149074, now seen corresponding path program 1 times [2021-12-14 17:04:23,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:04:23,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125502785] [2021-12-14 17:04:23,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:23,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:04:23,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:23,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:04:23,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:23,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:04:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:23,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-14 17:04:23,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:23,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:04:23,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:23,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-14 17:04:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:23,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:04:23,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:23,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 17:04:23,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:23,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:04:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:23,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-14 17:04:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:23,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-14 17:04:23,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:23,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 17:04:23,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:23,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-14 17:04:23,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:23,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 17:04:23,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:23,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-14 17:04:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:23,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-14 17:04:23,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:23,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 17:04:23,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:23,432 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2021-12-14 17:04:23,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:04:23,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125502785] [2021-12-14 17:04:23,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125502785] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:04:23,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:04:23,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 17:04:23,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952916684] [2021-12-14 17:04:23,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:04:23,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 17:04:23,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:04:23,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 17:04:23,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 17:04:23,435 INFO L87 Difference]: Start difference. First operand 124 states and 168 transitions. Second operand has 9 states, 8 states have (on average 4.875) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2021-12-14 17:04:23,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:04:23,844 INFO L93 Difference]: Finished difference Result 136 states and 189 transitions. [2021-12-14 17:04:23,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 17:04:23,845 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 117 [2021-12-14 17:04:23,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:04:23,846 INFO L225 Difference]: With dead ends: 136 [2021-12-14 17:04:23,846 INFO L226 Difference]: Without dead ends: 134 [2021-12-14 17:04:23,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-12-14 17:04:23,847 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 57 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-14 17:04:23,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 942 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-14 17:04:23,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-12-14 17:04:23,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2021-12-14 17:04:23,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 82 states have (on average 1.1951219512195121) internal successors, (98), 85 states have internal predecessors, (98), 39 states have call successors, (39), 9 states have call predecessors, (39), 11 states have return successors, (49), 38 states have call predecessors, (49), 38 states have call successors, (49) [2021-12-14 17:04:23,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 186 transitions. [2021-12-14 17:04:23,861 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 186 transitions. Word has length 117 [2021-12-14 17:04:23,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:04:23,862 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 186 transitions. [2021-12-14 17:04:23,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2021-12-14 17:04:23,863 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 186 transitions. [2021-12-14 17:04:23,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-14 17:04:23,864 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:04:23,864 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:04:23,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 17:04:23,864 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:04:23,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:04:23,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1888049612, now seen corresponding path program 1 times [2021-12-14 17:04:23,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:04:23,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807365196] [2021-12-14 17:04:23,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:23,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:04:23,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:24,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:04:24,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:24,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:04:24,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:24,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-14 17:04:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:24,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:04:24,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:24,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-14 17:04:24,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:24,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:04:24,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:24,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 17:04:24,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:24,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:04:24,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:24,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-14 17:04:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:24,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-14 17:04:24,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:24,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 17:04:24,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:24,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-14 17:04:24,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:24,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 17:04:24,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:24,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-14 17:04:24,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:24,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-14 17:04:24,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:24,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 17:04:24,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:24,468 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 19 proven. 20 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-12-14 17:04:24,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:04:24,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807365196] [2021-12-14 17:04:24,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807365196] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:04:24,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915696476] [2021-12-14 17:04:24,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:24,470 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:04:24,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:04:24,471 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:04:24,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-14 17:04:24,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:24,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 2692 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-14 17:04:24,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:04:25,069 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2021-12-14 17:04:25,069 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:04:25,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915696476] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:04:25,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:04:25,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [17] total 19 [2021-12-14 17:04:25,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957570631] [2021-12-14 17:04:25,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:04:25,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:04:25,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:04:25,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:04:25,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2021-12-14 17:04:25,070 INFO L87 Difference]: Start difference. First operand 133 states and 186 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2021-12-14 17:04:25,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:04:25,201 INFO L93 Difference]: Finished difference Result 247 states and 359 transitions. [2021-12-14 17:04:25,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 17:04:25,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 121 [2021-12-14 17:04:25,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:04:25,203 INFO L225 Difference]: With dead ends: 247 [2021-12-14 17:04:25,203 INFO L226 Difference]: Without dead ends: 133 [2021-12-14 17:04:25,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2021-12-14 17:04:25,204 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 3 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:04:25,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 431 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 28 Unchecked, 0.1s Time] [2021-12-14 17:04:25,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-12-14 17:04:25,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2021-12-14 17:04:25,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 82 states have (on average 1.1829268292682926) internal successors, (97), 85 states have internal predecessors, (97), 39 states have call successors, (39), 9 states have call predecessors, (39), 11 states have return successors, (49), 38 states have call predecessors, (49), 38 states have call successors, (49) [2021-12-14 17:04:25,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 185 transitions. [2021-12-14 17:04:25,212 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 185 transitions. Word has length 121 [2021-12-14 17:04:25,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:04:25,213 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 185 transitions. [2021-12-14 17:04:25,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2021-12-14 17:04:25,213 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 185 transitions. [2021-12-14 17:04:25,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-14 17:04:25,214 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:04:25,214 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:04:25,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-14 17:04:25,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:04:25,424 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:04:25,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:04:25,424 INFO L85 PathProgramCache]: Analyzing trace with hash -2146215050, now seen corresponding path program 1 times [2021-12-14 17:04:25,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:04:25,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721282729] [2021-12-14 17:04:25,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:25,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:04:25,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:25,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:04:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:25,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:04:25,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:25,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-14 17:04:25,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:25,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:04:25,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:25,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-14 17:04:25,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:25,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:04:25,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:25,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 17:04:25,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:25,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:04:25,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:25,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-14 17:04:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:25,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-14 17:04:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:25,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 17:04:25,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:25,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-14 17:04:25,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:25,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 17:04:25,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:25,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-14 17:04:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:25,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-14 17:04:25,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:25,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 17:04:25,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:25,979 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2021-12-14 17:04:25,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:04:25,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721282729] [2021-12-14 17:04:25,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721282729] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:04:25,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279086634] [2021-12-14 17:04:25,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:25,980 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:04:25,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:04:25,981 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:04:25,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-14 17:04:26,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:26,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 2697 conjuncts, 43 conjunts are in the unsatisfiable core [2021-12-14 17:04:26,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:04:26,792 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-12-14 17:04:26,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:04:26,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279086634] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:04:26,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:04:26,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [19] total 23 [2021-12-14 17:04:26,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842479306] [2021-12-14 17:04:26,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:04:26,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-14 17:04:26,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:04:26,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-14 17:04:26,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2021-12-14 17:04:26,794 INFO L87 Difference]: Start difference. First operand 133 states and 185 transitions. Second operand has 11 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 5 states have call successors, (18), 3 states have call predecessors, (18), 5 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2021-12-14 17:04:27,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:04:27,139 INFO L93 Difference]: Finished difference Result 258 states and 359 transitions. [2021-12-14 17:04:27,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 17:04:27,139 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 5 states have call successors, (18), 3 states have call predecessors, (18), 5 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) Word has length 121 [2021-12-14 17:04:27,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:04:27,140 INFO L225 Difference]: With dead ends: 258 [2021-12-14 17:04:27,140 INFO L226 Difference]: Without dead ends: 140 [2021-12-14 17:04:27,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 145 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2021-12-14 17:04:27,141 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 66 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 17:04:27,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 812 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 214 Invalid, 0 Unknown, 67 Unchecked, 0.3s Time] [2021-12-14 17:04:27,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-12-14 17:04:27,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 133. [2021-12-14 17:04:27,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 82 states have (on average 1.1829268292682926) internal successors, (97), 85 states have internal predecessors, (97), 39 states have call successors, (39), 9 states have call predecessors, (39), 11 states have return successors, (48), 38 states have call predecessors, (48), 38 states have call successors, (48) [2021-12-14 17:04:27,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 184 transitions. [2021-12-14 17:04:27,149 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 184 transitions. Word has length 121 [2021-12-14 17:04:27,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:04:27,149 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 184 transitions. [2021-12-14 17:04:27,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 5 states have call successors, (18), 3 states have call predecessors, (18), 5 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2021-12-14 17:04:27,150 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 184 transitions. [2021-12-14 17:04:27,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-14 17:04:27,151 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:04:27,151 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 3, 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] [2021-12-14 17:04:27,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-14 17:04:27,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:04:27,363 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:04:27,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:04:27,364 INFO L85 PathProgramCache]: Analyzing trace with hash -859808338, now seen corresponding path program 2 times [2021-12-14 17:04:27,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:04:27,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308436920] [2021-12-14 17:04:27,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:27,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:04:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:27,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:04:27,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:27,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:04:27,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:27,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-14 17:04:27,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:27,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:04:27,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:27,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:04:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:27,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-14 17:04:27,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:27,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-14 17:04:27,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:27,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-14 17:04:27,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:27,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-14 17:04:27,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:27,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-14 17:04:27,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:27,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 17:04:27,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:27,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 17:04:27,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:27,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 17:04:27,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:27,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-14 17:04:27,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:27,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-14 17:04:27,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:27,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 17:04:27,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:27,583 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 3 proven. 38 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2021-12-14 17:04:27,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:04:27,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308436920] [2021-12-14 17:04:27,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308436920] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:04:27,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51747104] [2021-12-14 17:04:27,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-14 17:04:27,584 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:04:27,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:04:27,585 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:04:27,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-14 17:04:28,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-14 17:04:28,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 17:04:28,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 2709 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-14 17:04:28,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:04:28,217 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2021-12-14 17:04:28,218 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:04:28,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51747104] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:04:28,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:04:28,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2021-12-14 17:04:28,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28027777] [2021-12-14 17:04:28,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:04:28,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 17:04:28,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:04:28,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 17:04:28,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-14 17:04:28,220 INFO L87 Difference]: Start difference. First operand 133 states and 184 transitions. Second operand has 9 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-14 17:04:28,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:04:28,338 INFO L93 Difference]: Finished difference Result 252 states and 359 transitions. [2021-12-14 17:04:28,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 17:04:28,339 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 125 [2021-12-14 17:04:28,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:04:28,340 INFO L225 Difference]: With dead ends: 252 [2021-12-14 17:04:28,340 INFO L226 Difference]: Without dead ends: 138 [2021-12-14 17:04:28,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-12-14 17:04:28,341 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 11 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:04:28,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 1217 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 17:04:28,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-12-14 17:04:28,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2021-12-14 17:04:28,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 86 states have (on average 1.1744186046511629) internal successors, (101), 90 states have internal predecessors, (101), 39 states have call successors, (39), 9 states have call predecessors, (39), 12 states have return successors, (57), 38 states have call predecessors, (57), 38 states have call successors, (57) [2021-12-14 17:04:28,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 197 transitions. [2021-12-14 17:04:28,348 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 197 transitions. Word has length 125 [2021-12-14 17:04:28,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:04:28,348 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 197 transitions. [2021-12-14 17:04:28,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-14 17:04:28,348 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 197 transitions. [2021-12-14 17:04:28,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-14 17:04:28,349 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:04:28,349 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 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] [2021-12-14 17:04:28,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-14 17:04:28,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:04:28,563 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:04:28,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:04:28,564 INFO L85 PathProgramCache]: Analyzing trace with hash 376582281, now seen corresponding path program 1 times [2021-12-14 17:04:28,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:04:28,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637852945] [2021-12-14 17:04:28,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:28,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:04:28,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:28,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:04:28,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:28,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:04:28,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:28,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-14 17:04:28,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:28,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:04:28,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:28,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:04:28,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:28,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 17:04:28,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:28,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-14 17:04:28,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:28,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:04:28,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:28,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-14 17:04:28,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:28,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-14 17:04:28,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:28,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-14 17:04:28,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:28,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 17:04:28,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:28,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-14 17:04:28,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:28,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 17:04:28,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:28,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-14 17:04:28,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:28,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-14 17:04:28,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:28,788 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2021-12-14 17:04:28,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:04:28,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637852945] [2021-12-14 17:04:28,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637852945] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:04:28,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633689623] [2021-12-14 17:04:28,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:28,789 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:04:28,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:04:28,790 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:04:28,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-14 17:04:29,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:29,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 2714 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-14 17:04:29,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:04:29,367 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-12-14 17:04:29,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:04:29,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633689623] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:04:29,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:04:29,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2021-12-14 17:04:29,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779791962] [2021-12-14 17:04:29,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:04:29,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:04:29,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:04:29,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:04:29,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:04:29,369 INFO L87 Difference]: Start difference. First operand 138 states and 197 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 17:04:29,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:04:29,622 INFO L93 Difference]: Finished difference Result 257 states and 382 transitions. [2021-12-14 17:04:29,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 17:04:29,623 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 127 [2021-12-14 17:04:29,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:04:29,624 INFO L225 Difference]: With dead ends: 257 [2021-12-14 17:04:29,624 INFO L226 Difference]: Without dead ends: 138 [2021-12-14 17:04:29,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 157 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-14 17:04:29,625 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 13 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:04:29,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 572 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 39 Unchecked, 0.2s Time] [2021-12-14 17:04:29,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-12-14 17:04:29,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2021-12-14 17:04:29,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 86 states have (on average 1.1627906976744187) internal successors, (100), 90 states have internal predecessors, (100), 39 states have call successors, (39), 9 states have call predecessors, (39), 12 states have return successors, (57), 38 states have call predecessors, (57), 38 states have call successors, (57) [2021-12-14 17:04:29,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 196 transitions. [2021-12-14 17:04:29,631 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 196 transitions. Word has length 127 [2021-12-14 17:04:29,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:04:29,632 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 196 transitions. [2021-12-14 17:04:29,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 17:04:29,632 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 196 transitions. [2021-12-14 17:04:29,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-14 17:04:29,633 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:04:29,633 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 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] [2021-12-14 17:04:29,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-14 17:04:29,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:04:29,847 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:04:29,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:04:29,847 INFO L85 PathProgramCache]: Analyzing trace with hash -2020888249, now seen corresponding path program 1 times [2021-12-14 17:04:29,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:04:29,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167734252] [2021-12-14 17:04:29,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:29,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:04:29,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:29,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:04:29,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:29,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:04:29,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:29,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-14 17:04:29,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:29,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:04:29,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:30,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:04:30,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:30,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 17:04:30,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:30,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-14 17:04:30,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:30,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:04:30,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:30,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-14 17:04:30,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:30,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-14 17:04:30,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:30,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-14 17:04:30,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:30,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 17:04:30,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:30,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-14 17:04:30,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:30,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 17:04:30,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:30,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-14 17:04:30,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:30,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-14 17:04:30,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:30,144 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2021-12-14 17:04:30,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:04:30,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167734252] [2021-12-14 17:04:30,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167734252] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:04:30,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65367096] [2021-12-14 17:04:30,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:30,145 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:04:30,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:04:30,146 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:04:30,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-14 17:04:30,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:30,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 2719 conjuncts, 64 conjunts are in the unsatisfiable core [2021-12-14 17:04:30,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:04:31,700 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 108 proven. 17 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-12-14 17:04:31,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:04:32,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-12-14 17:04:32,198 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-12-14 17:04:32,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 26 [2021-12-14 17:04:32,226 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 12 proven. 34 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2021-12-14 17:04:32,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65367096] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 17:04:32,226 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 17:04:32,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 14] total 28 [2021-12-14 17:04:32,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459090878] [2021-12-14 17:04:32,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 17:04:32,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-14 17:04:32,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:04:32,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-14 17:04:32,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2021-12-14 17:04:32,228 INFO L87 Difference]: Start difference. First operand 138 states and 196 transitions. Second operand has 28 states, 26 states have (on average 4.5) internal successors, (117), 25 states have internal predecessors, (117), 11 states have call successors, (41), 6 states have call predecessors, (41), 6 states have return successors, (37), 9 states have call predecessors, (37), 11 states have call successors, (37) [2021-12-14 17:04:35,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:04:35,670 INFO L93 Difference]: Finished difference Result 425 states and 646 transitions. [2021-12-14 17:04:35,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-12-14 17:04:35,670 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 4.5) internal successors, (117), 25 states have internal predecessors, (117), 11 states have call successors, (41), 6 states have call predecessors, (41), 6 states have return successors, (37), 9 states have call predecessors, (37), 11 states have call successors, (37) Word has length 127 [2021-12-14 17:04:35,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:04:35,673 INFO L225 Difference]: With dead ends: 425 [2021-12-14 17:04:35,673 INFO L226 Difference]: Without dead ends: 316 [2021-12-14 17:04:35,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 249 SyntacticMatches, 22 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 748 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=333, Invalid=2529, Unknown=0, NotChecked=0, Total=2862 [2021-12-14 17:04:35,675 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 181 mSDsluCounter, 3004 mSDsCounter, 0 mSdLazyCounter, 3302 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 3289 SdHoareTripleChecker+Invalid, 4593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 3302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1150 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-14 17:04:35,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 3289 Invalid, 4593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 3302 Invalid, 0 Unknown, 1150 Unchecked, 2.8s Time] [2021-12-14 17:04:35,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-12-14 17:04:35,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 171. [2021-12-14 17:04:35,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 104 states have (on average 1.1442307692307692) internal successors, (119), 109 states have internal predecessors, (119), 52 states have call successors, (52), 13 states have call predecessors, (52), 14 states have return successors, (76), 48 states have call predecessors, (76), 51 states have call successors, (76) [2021-12-14 17:04:35,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 247 transitions. [2021-12-14 17:04:35,693 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 247 transitions. Word has length 127 [2021-12-14 17:04:35,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:04:35,694 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 247 transitions. [2021-12-14 17:04:35,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 4.5) internal successors, (117), 25 states have internal predecessors, (117), 11 states have call successors, (41), 6 states have call predecessors, (41), 6 states have return successors, (37), 9 states have call predecessors, (37), 11 states have call successors, (37) [2021-12-14 17:04:35,694 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 247 transitions. [2021-12-14 17:04:35,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-14 17:04:35,695 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:04:35,695 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 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] [2021-12-14 17:04:35,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-14 17:04:35,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-14 17:04:35,909 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:04:35,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:04:35,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1107927849, now seen corresponding path program 1 times [2021-12-14 17:04:35,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:04:35,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296817214] [2021-12-14 17:04:35,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:35,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:04:35,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:36,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:04:36,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:36,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:04:36,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:36,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-14 17:04:36,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:36,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:04:36,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:36,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:04:36,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:36,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 17:04:36,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:36,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-14 17:04:36,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:36,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:04:36,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:36,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-14 17:04:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:36,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 17:04:36,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:36,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-14 17:04:36,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:36,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 17:04:36,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:36,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-14 17:04:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:36,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 17:04:36,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:36,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 17:04:36,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:36,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-14 17:04:36,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:36,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-14 17:04:36,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:36,165 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2021-12-14 17:04:36,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:04:36,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296817214] [2021-12-14 17:04:36,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296817214] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:04:36,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:04:36,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 17:04:36,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855977169] [2021-12-14 17:04:36,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:04:36,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 17:04:36,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:04:36,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 17:04:36,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:04:36,169 INFO L87 Difference]: Start difference. First operand 171 states and 247 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 5 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2021-12-14 17:04:36,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:04:36,764 INFO L93 Difference]: Finished difference Result 331 states and 490 transitions. [2021-12-14 17:04:36,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 17:04:36,764 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 5 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 134 [2021-12-14 17:04:36,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:04:36,766 INFO L225 Difference]: With dead ends: 331 [2021-12-14 17:04:36,766 INFO L226 Difference]: Without dead ends: 210 [2021-12-14 17:04:36,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-12-14 17:04:36,767 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 150 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-14 17:04:36,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 694 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-14 17:04:36,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-12-14 17:04:36,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 182. [2021-12-14 17:04:36,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 110 states have (on average 1.1363636363636365) internal successors, (125), 115 states have internal predecessors, (125), 57 states have call successors, (57), 13 states have call predecessors, (57), 14 states have return successors, (81), 53 states have call predecessors, (81), 56 states have call successors, (81) [2021-12-14 17:04:36,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 263 transitions. [2021-12-14 17:04:36,777 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 263 transitions. Word has length 134 [2021-12-14 17:04:36,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:04:36,777 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 263 transitions. [2021-12-14 17:04:36,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 5 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2021-12-14 17:04:36,777 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 263 transitions. [2021-12-14 17:04:36,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-14 17:04:36,779 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:04:36,779 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:04:36,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 17:04:36,779 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:04:36,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:04:36,779 INFO L85 PathProgramCache]: Analyzing trace with hash 969854850, now seen corresponding path program 1 times [2021-12-14 17:04:36,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:04:36,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270436185] [2021-12-14 17:04:36,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:36,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:04:36,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:36,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:04:36,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:36,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:04:36,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:36,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-14 17:04:36,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:36,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 17:04:36,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:36,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:04:36,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:36,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-14 17:04:36,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:36,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:04:36,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:37,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:04:37,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:37,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-14 17:04:37,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:37,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-14 17:04:37,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:37,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-14 17:04:37,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:37,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-14 17:04:37,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:37,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-14 17:04:37,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:37,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-14 17:04:37,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:37,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 17:04:37,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:37,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-14 17:04:37,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:37,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-14 17:04:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:37,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-14 17:04:37,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:37,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 17:04:37,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:37,113 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 26 proven. 24 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-12-14 17:04:37,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:04:37,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270436185] [2021-12-14 17:04:37,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270436185] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:04:37,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916957661] [2021-12-14 17:04:37,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:37,114 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:04:37,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:04:37,128 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:04:37,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-14 17:04:37,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:37,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 2837 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-14 17:04:37,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:04:37,700 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-12-14 17:04:37,700 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:04:37,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916957661] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:04:37,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:04:37,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2021-12-14 17:04:37,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116346327] [2021-12-14 17:04:37,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:04:37,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 17:04:37,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:04:37,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 17:04:37,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-14 17:04:37,702 INFO L87 Difference]: Start difference. First operand 182 states and 263 transitions. Second operand has 9 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-14 17:04:37,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:04:37,811 INFO L93 Difference]: Finished difference Result 309 states and 441 transitions. [2021-12-14 17:04:37,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 17:04:37,811 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 157 [2021-12-14 17:04:37,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:04:37,812 INFO L225 Difference]: With dead ends: 309 [2021-12-14 17:04:37,812 INFO L226 Difference]: Without dead ends: 182 [2021-12-14 17:04:37,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 193 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-12-14 17:04:37,814 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 10 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:04:37,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 1194 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 17:04:37,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-12-14 17:04:37,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2021-12-14 17:04:37,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 110 states have (on average 1.1363636363636365) internal successors, (125), 115 states have internal predecessors, (125), 57 states have call successors, (57), 13 states have call predecessors, (57), 14 states have return successors, (79), 53 states have call predecessors, (79), 56 states have call successors, (79) [2021-12-14 17:04:37,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 261 transitions. [2021-12-14 17:04:37,826 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 261 transitions. Word has length 157 [2021-12-14 17:04:37,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:04:37,827 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 261 transitions. [2021-12-14 17:04:37,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-14 17:04:37,827 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 261 transitions. [2021-12-14 17:04:37,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-14 17:04:37,828 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:04:37,829 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 4, 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] [2021-12-14 17:04:37,849 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-14 17:04:38,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:04:38,043 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:04:38,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:04:38,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1940256542, now seen corresponding path program 2 times [2021-12-14 17:04:38,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:04:38,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087877116] [2021-12-14 17:04:38,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:38,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:04:38,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:38,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:04:38,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:38,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:04:38,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:38,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-14 17:04:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:38,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:04:38,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:38,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:04:38,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:38,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 17:04:38,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:38,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-14 17:04:38,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:38,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:04:38,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:38,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-14 17:04:38,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:38,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 17:04:38,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:38,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 17:04:38,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:38,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-14 17:04:38,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:38,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 17:04:38,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:38,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-14 17:04:38,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:38,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 17:04:38,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:38,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-14 17:04:38,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:38,330 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 38 proven. 5 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2021-12-14 17:04:38,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:04:38,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087877116] [2021-12-14 17:04:38,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087877116] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:04:38,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534176429] [2021-12-14 17:04:38,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-14 17:04:38,331 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:04:38,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:04:38,332 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:04:38,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-14 17:04:38,778 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-14 17:04:38,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 17:04:38,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 2753 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-14 17:04:38,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:04:38,972 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2021-12-14 17:04:38,972 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:04:38,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534176429] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:04:38,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:04:38,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2021-12-14 17:04:38,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011480152] [2021-12-14 17:04:38,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:04:38,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 17:04:38,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:04:38,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 17:04:38,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-14 17:04:38,974 INFO L87 Difference]: Start difference. First operand 182 states and 261 transitions. Second operand has 9 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-14 17:04:39,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:04:39,079 INFO L93 Difference]: Finished difference Result 278 states and 395 transitions. [2021-12-14 17:04:39,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 17:04:39,079 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 137 [2021-12-14 17:04:39,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:04:39,080 INFO L225 Difference]: With dead ends: 278 [2021-12-14 17:04:39,080 INFO L226 Difference]: Without dead ends: 182 [2021-12-14 17:04:39,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 167 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-12-14 17:04:39,081 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 10 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:04:39,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 1194 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 17:04:39,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-12-14 17:04:39,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2021-12-14 17:04:39,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 110 states have (on average 1.1363636363636365) internal successors, (125), 115 states have internal predecessors, (125), 57 states have call successors, (57), 13 states have call predecessors, (57), 14 states have return successors, (76), 53 states have call predecessors, (76), 56 states have call successors, (76) [2021-12-14 17:04:39,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 258 transitions. [2021-12-14 17:04:39,090 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 258 transitions. Word has length 137 [2021-12-14 17:04:39,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:04:39,091 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 258 transitions. [2021-12-14 17:04:39,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-14 17:04:39,091 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 258 transitions. [2021-12-14 17:04:39,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-14 17:04:39,092 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:04:39,092 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:04:39,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-14 17:04:39,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-14 17:04:39,307 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:04:39,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:04:39,308 INFO L85 PathProgramCache]: Analyzing trace with hash 838387626, now seen corresponding path program 1 times [2021-12-14 17:04:39,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:04:39,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117743845] [2021-12-14 17:04:39,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:39,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:04:39,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:39,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:04:39,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:39,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:04:39,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:39,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-14 17:04:39,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:39,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 17:04:39,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:39,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:04:39,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:39,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-14 17:04:39,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:39,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:04:39,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:39,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:04:39,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:39,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-14 17:04:39,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:39,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-14 17:04:39,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:39,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-14 17:04:39,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:39,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-14 17:04:39,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:39,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 17:04:39,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:39,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-14 17:04:39,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:39,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-14 17:04:39,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:39,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-14 17:04:39,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:39,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 17:04:39,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:39,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-14 17:04:39,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:39,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-14 17:04:39,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:39,782 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 34 proven. 11 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2021-12-14 17:04:39,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:04:39,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117743845] [2021-12-14 17:04:39,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117743845] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:04:39,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094371045] [2021-12-14 17:04:39,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:04:39,783 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:04:39,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:04:39,788 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:04:39,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-14 17:04:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:04:40,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 2801 conjuncts, 139 conjunts are in the unsatisfiable core [2021-12-14 17:04:40,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:04:40,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-14 17:04:40,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-14 17:04:40,318 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-14 17:04:40,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-14 17:04:40,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-14 17:04:40,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:04:40,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2021-12-14 17:04:40,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-14 17:04:41,310 INFO L354 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2021-12-14 17:04:41,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 19 [2021-12-14 17:04:41,408 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-14 17:04:41,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 32 [2021-12-14 17:04:41,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-12-14 17:04:41,671 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-14 17:04:41,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 37 [2021-12-14 17:04:42,918 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-14 17:04:42,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-14 17:04:43,242 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-14 17:04:43,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-14 17:04:43,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-14 17:04:43,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-14 17:04:44,032 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 80 proven. 157 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-12-14 17:04:44,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:04:44,722 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_1007 (Array Int Int))) (= (mod (select (select (store |c_#memory_int| |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~#rv~7#1.base| v_ArrVal_1007) |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~cursor#1.base|) |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~cursor#1.offset|) 18446744073709551616) 0)) (forall ((v_ArrVal_1008 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~#rv~7#1.base| v_ArrVal_1008) |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~cursor#1.base|) (+ |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~cursor#1.offset| 8)) 0)))) is different from false [2021-12-14 17:04:44,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094371045] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:04:44,852 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-14 17:04:44,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 39] total 53 [2021-12-14 17:04:44,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370203597] [2021-12-14 17:04:44,852 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-14 17:04:44,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-12-14 17:04:44,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:04:44,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-12-14 17:04:44,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=3992, Unknown=1, NotChecked=128, Total=4422 [2021-12-14 17:04:44,854 INFO L87 Difference]: Start difference. First operand 182 states and 258 transitions. Second operand has 53 states, 50 states have (on average 2.6) internal successors, (130), 47 states have internal predecessors, (130), 17 states have call successors, (39), 11 states have call predecessors, (39), 11 states have return successors, (36), 15 states have call predecessors, (36), 16 states have call successors, (36) [2021-12-14 17:05:03,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:05:03,767 INFO L93 Difference]: Finished difference Result 472 states and 683 transitions. [2021-12-14 17:05:03,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-12-14 17:05:03,767 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 50 states have (on average 2.6) internal successors, (130), 47 states have internal predecessors, (130), 17 states have call successors, (39), 11 states have call predecessors, (39), 11 states have return successors, (36), 15 states have call predecessors, (36), 16 states have call successors, (36) Word has length 145 [2021-12-14 17:05:03,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:05:03,770 INFO L225 Difference]: With dead ends: 472 [2021-12-14 17:05:03,770 INFO L226 Difference]: Without dead ends: 346 [2021-12-14 17:05:03,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 134 SyntacticMatches, 35 SemanticMatches, 129 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6075 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=1249, Invalid=15505, Unknown=20, NotChecked=256, Total=17030 [2021-12-14 17:05:03,774 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 297 mSDsluCounter, 3809 mSDsCounter, 0 mSdLazyCounter, 3126 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 4048 SdHoareTripleChecker+Invalid, 7799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 3126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4404 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-14 17:05:03,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 4048 Invalid, 7799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 3126 Invalid, 0 Unknown, 4404 Unchecked, 2.7s Time] [2021-12-14 17:05:03,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2021-12-14 17:05:03,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 264. [2021-12-14 17:05:03,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 168 states have (on average 1.1369047619047619) internal successors, (191), 172 states have internal predecessors, (191), 74 states have call successors, (74), 20 states have call predecessors, (74), 21 states have return successors, (100), 71 states have call predecessors, (100), 73 states have call successors, (100) [2021-12-14 17:05:03,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 365 transitions. [2021-12-14 17:05:03,790 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 365 transitions. Word has length 145 [2021-12-14 17:05:03,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:05:03,790 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 365 transitions. [2021-12-14 17:05:03,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 50 states have (on average 2.6) internal successors, (130), 47 states have internal predecessors, (130), 17 states have call successors, (39), 11 states have call predecessors, (39), 11 states have return successors, (36), 15 states have call predecessors, (36), 16 states have call successors, (36) [2021-12-14 17:05:03,791 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 365 transitions. [2021-12-14 17:05:03,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-14 17:05:03,792 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:05:03,792 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:05:03,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-14 17:05:04,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-14 17:05:04,011 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:05:04,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:05:04,012 INFO L85 PathProgramCache]: Analyzing trace with hash 647997563, now seen corresponding path program 1 times [2021-12-14 17:05:04,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:05:04,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355381153] [2021-12-14 17:05:04,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:04,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:05:04,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:04,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:04,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:04,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:04,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:04,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-14 17:05:04,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:04,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 17:05:04,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:04,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:04,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:04,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-14 17:05:04,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:04,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:05:04,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:04,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:05:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:04,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-14 17:05:04,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:04,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-14 17:05:04,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:04,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-14 17:05:04,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:04,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-14 17:05:04,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:04,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 17:05:04,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:04,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-14 17:05:04,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:04,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-14 17:05:04,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:04,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-14 17:05:04,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:04,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 17:05:04,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:04,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-14 17:05:04,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:04,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-14 17:05:04,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:04,194 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2021-12-14 17:05:04,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:05:04,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355381153] [2021-12-14 17:05:04,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355381153] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:05:04,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:05:04,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:05:04,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113705082] [2021-12-14 17:05:04,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:05:04,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:05:04,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:05:04,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:05:04,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:05:04,196 INFO L87 Difference]: Start difference. First operand 264 states and 365 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-14 17:05:04,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:05:04,378 INFO L93 Difference]: Finished difference Result 381 states and 540 transitions. [2021-12-14 17:05:04,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 17:05:04,379 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 146 [2021-12-14 17:05:04,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:05:04,380 INFO L225 Difference]: With dead ends: 381 [2021-12-14 17:05:04,380 INFO L226 Difference]: Without dead ends: 267 [2021-12-14 17:05:04,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:05:04,381 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 36 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:05:04,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 320 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 17:05:04,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-12-14 17:05:04,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2021-12-14 17:05:04,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 171 states have (on average 1.1345029239766082) internal successors, (194), 175 states have internal predecessors, (194), 74 states have call successors, (74), 20 states have call predecessors, (74), 21 states have return successors, (100), 71 states have call predecessors, (100), 73 states have call successors, (100) [2021-12-14 17:05:04,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 368 transitions. [2021-12-14 17:05:04,397 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 368 transitions. Word has length 146 [2021-12-14 17:05:04,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:05:04,397 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 368 transitions. [2021-12-14 17:05:04,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-14 17:05:04,397 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 368 transitions. [2021-12-14 17:05:04,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-14 17:05:04,399 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:05:04,399 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:05:04,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-14 17:05:04,399 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:05:04,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:05:04,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1958025991, now seen corresponding path program 1 times [2021-12-14 17:05:04,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:05:04,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799415824] [2021-12-14 17:05:04,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:04,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:05:04,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:04,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:04,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:04,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:04,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:04,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-14 17:05:04,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:04,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 17:05:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:04,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:04,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-14 17:05:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:04,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:05:04,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:04,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:05:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:04,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-14 17:05:04,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:04,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-14 17:05:04,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:04,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-14 17:05:04,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:04,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-14 17:05:04,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:04,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 17:05:04,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:04,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-14 17:05:04,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:04,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-14 17:05:04,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:04,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-14 17:05:04,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:04,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 17:05:04,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:04,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-14 17:05:04,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:04,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-14 17:05:04,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:04,698 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2021-12-14 17:05:04,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:05:04,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799415824] [2021-12-14 17:05:04,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799415824] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:05:04,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090322743] [2021-12-14 17:05:04,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:04,699 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:05:04,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:05:04,700 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:05:04,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-14 17:05:05,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:05,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 2882 conjuncts, 87 conjunts are in the unsatisfiable core [2021-12-14 17:05:05,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:05:05,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-14 17:05:05,258 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-14 17:05:05,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2021-12-14 17:05:05,346 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-14 17:05:05,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2021-12-14 17:05:14,284 INFO L354 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2021-12-14 17:05:14,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 34 [2021-12-14 17:05:14,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2021-12-14 17:05:16,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19