./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be32_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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_be32_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 065f95e1f01b1c2bb5cc332c26e118823e72d0e75cb3966f20aacf6dc1740b4a --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 03:17:12,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:17:12,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:17:12,408 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:17:12,408 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:17:12,409 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:17:12,410 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:17:12,411 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:17:12,412 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:17:12,413 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:17:12,414 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:17:12,417 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:17:12,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:17:12,420 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:17:12,420 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:17:12,421 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:17:12,421 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:17:12,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:17:12,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:17:12,424 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:17:12,425 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:17:12,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:17:12,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:17:12,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:17:12,436 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:17:12,436 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:17:12,436 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:17:12,437 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:17:12,437 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:17:12,438 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:17:12,439 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:17:12,440 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:17:12,440 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:17:12,441 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:17:12,443 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:17:12,443 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:17:12,444 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:17:12,444 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:17:12,445 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:17:12,445 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:17:12,446 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:17:12,447 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 03:17:12,463 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:17:12,466 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:17:12,467 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:17:12,468 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:17:12,468 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:17:12,468 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:17:12,469 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:17:12,469 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:17:12,470 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:17:12,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:17:12,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:17:12,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:17:12,471 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:17:12,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:17:12,471 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:17:12,471 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:17:12,471 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:17:12,471 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:17:12,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:17:12,472 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:17:12,472 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:17:12,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:17:12,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:17:12,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:17:12,472 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:17:12,473 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:17:12,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:17:12,473 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:17:12,473 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:17:12,473 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:17:12,473 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 065f95e1f01b1c2bb5cc332c26e118823e72d0e75cb3966f20aacf6dc1740b4a [2021-12-28 03:17:12,703 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:17:12,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:17:12,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:17:12,725 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:17:12,725 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:17:12,726 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be32_harness.i [2021-12-28 03:17:12,779 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d28880dda/eac9f9e0b3c6425ba23bbfc9cd40c9d4/FLAG4b5249cd7 [2021-12-28 03:17:13,371 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:17:13,371 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be32_harness.i [2021-12-28 03:17:13,404 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d28880dda/eac9f9e0b3c6425ba23bbfc9cd40c9d4/FLAG4b5249cd7 [2021-12-28 03:17:13,810 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d28880dda/eac9f9e0b3c6425ba23bbfc9cd40c9d4 [2021-12-28 03:17:13,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:17:13,813 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:17:13,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:17:13,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:17:13,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:17:13,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:17:13" (1/1) ... [2021-12-28 03:17:13,817 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@379ca7e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:17:13, skipping insertion in model container [2021-12-28 03:17:13,817 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:17:13" (1/1) ... [2021-12-28 03:17:13,825 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:17:13,935 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:17:14,132 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_be32_harness.i[4499,4512] [2021-12-28 03:17:14,139 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_be32_harness.i[4559,4572] [2021-12-28 03:17:14,697 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:17:14,698 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:17:14,699 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:17:14,700 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:17:14,701 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:17:14,717 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:17:14,718 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:17:14,720 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:17:14,721 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:17:14,949 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:17:14,950 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:17:14,950 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:17:14,951 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:17:14,952 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:17:14,952 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:17:14,952 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:17:14,953 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:17:14,953 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:17:14,953 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:17:15,041 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-28 03:17:15,103 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:17:15,107 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:17:15,145 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:17:15,188 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:17:15,206 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_be32_harness.i[4499,4512] [2021-12-28 03:17:15,207 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_be32_harness.i[4559,4572] [2021-12-28 03:17:15,260 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:17:15,260 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:17:15,260 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:17:15,261 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:17:15,262 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:17:15,271 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:17:15,272 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:17:15,274 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:17:15,274 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:17:15,291 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:17:15,292 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:17:15,292 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:17:15,293 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:17:15,293 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:17:15,294 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:17:15,294 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:17:15,294 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:17:15,295 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:17:15,295 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:17:15,305 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-28 03:17:15,361 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:17:15,362 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:17:15,384 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:17:15,544 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:17:15,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:17:15 WrapperNode [2021-12-28 03:17:15,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:17:15,545 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:17:15,545 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:17:15,546 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:17:15,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:17:15" (1/1) ... [2021-12-28 03:17:15,619 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:17:15" (1/1) ... [2021-12-28 03:17:15,685 INFO L137 Inliner]: procedures = 691, calls = 2645, calls flagged for inlining = 62, calls inlined = 11, statements flattened = 975 [2021-12-28 03:17:15,685 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:17:15,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:17:15,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:17:15,686 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:17:15,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:17:15" (1/1) ... [2021-12-28 03:17:15,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:17:15" (1/1) ... [2021-12-28 03:17:15,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:17:15" (1/1) ... [2021-12-28 03:17:15,706 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:17:15" (1/1) ... [2021-12-28 03:17:15,743 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:17:15" (1/1) ... [2021-12-28 03:17:15,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:17:15" (1/1) ... [2021-12-28 03:17:15,762 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:17:15" (1/1) ... [2021-12-28 03:17:15,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:17:15,776 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:17:15,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:17:15,777 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:17:15,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:17:15" (1/1) ... [2021-12-28 03:17:15,783 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:17:15,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:17:15,808 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) [2021-12-28 03:17:15,815 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 [2021-12-28 03:17:15,843 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_read [2021-12-28 03:17:15,844 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_read [2021-12-28 03:17:15,844 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-12-28 03:17:15,844 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-12-28 03:17:15,844 INFO L130 BoogieDeclarations]: Found specification of procedure ntohl [2021-12-28 03:17:15,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:17:15,845 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-28 03:17:15,845 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-28 03:17:15,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2021-12-28 03:17:15,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-28 03:17:15,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-28 03:17:15,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:17:15,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-28 03:17:15,846 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-28 03:17:15,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-28 03:17:15,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-28 03:17:15,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:17:15,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:17:15,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 03:17:15,848 INFO L130 BoogieDeclarations]: Found specification of procedure aws_ntoh32 [2021-12-28 03:17:15,848 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_ntoh32 [2021-12-28 03:17:15,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:17:15,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:17:15,848 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-28 03:17:15,848 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-28 03:17:15,849 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-12-28 03:17:15,849 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-12-28 03:17:15,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-28 03:17:15,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-28 03:17:15,849 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-12-28 03:17:15,849 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-12-28 03:17:15,850 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 03:17:15,850 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 03:17:15,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:17:15,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 03:17:15,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 03:17:15,850 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-28 03:17:15,851 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-28 03:17:15,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:17:15,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2021-12-28 03:17:15,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:17:16,134 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:17:16,135 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:17:17,055 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:17:17,064 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:17:17,065 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 03:17:17,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:17:17 BoogieIcfgContainer [2021-12-28 03:17:17,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:17:17,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:17:17,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:17:17,070 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:17:17,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:17:13" (1/3) ... [2021-12-28 03:17:17,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cb5ff3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:17:17, skipping insertion in model container [2021-12-28 03:17:17,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:17:15" (2/3) ... [2021-12-28 03:17:17,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cb5ff3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:17:17, skipping insertion in model container [2021-12-28 03:17:17,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:17:17" (3/3) ... [2021-12-28 03:17:17,072 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_read_be32_harness.i [2021-12-28 03:17:17,076 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:17:17,076 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:17:17,121 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:17:17,136 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 [2021-12-28 03:17:17,137 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 03:17:17,153 INFO L276 IsEmpty]: Start isEmpty. Operand has 158 states, 97 states have (on average 1.2268041237113403) internal successors, (119), 98 states have internal predecessors, (119), 48 states have call successors, (48), 11 states have call predecessors, (48), 11 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2021-12-28 03:17:17,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-28 03:17:17,165 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:17:17,166 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:17:17,167 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:17:17,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:17:17,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1619030086, now seen corresponding path program 1 times [2021-12-28 03:17:17,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:17:17,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566171441] [2021-12-28 03:17:17,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:17,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:17:17,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:17,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:17:17,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:17,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:17,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:17,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 03:17:17,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:17,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:17:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:17,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-28 03:17:17,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:17,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:17:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:17,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-28 03:17:17,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:17,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-28 03:17:17,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:17,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 03:17:17,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:17,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 03:17:17,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:17,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 03:17:17,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:17,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 03:17:17,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:17,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 03:17:17,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:17,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 03:17:17,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:17,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 03:17:17,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:17,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 03:17:17,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:17,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-28 03:17:17,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:17,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-28 03:17:17,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:17,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 03:17:17,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:17,741 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2021-12-28 03:17:17,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:17:17,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566171441] [2021-12-28 03:17:17,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566171441] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:17:17,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:17:17,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:17:17,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913697806] [2021-12-28 03:17:17,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:17:17,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:17:17,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:17:17,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:17:17,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:17:17,766 INFO L87 Difference]: Start difference. First operand has 158 states, 97 states have (on average 1.2268041237113403) internal successors, (119), 98 states have internal predecessors, (119), 48 states have call successors, (48), 11 states have call predecessors, (48), 11 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-28 03:17:18,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:17:18,232 INFO L93 Difference]: Finished difference Result 316 states and 460 transitions. [2021-12-28 03:17:18,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:17:18,234 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 124 [2021-12-28 03:17:18,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:17:18,241 INFO L225 Difference]: With dead ends: 316 [2021-12-28 03:17:18,241 INFO L226 Difference]: Without dead ends: 159 [2021-12-28 03:17:18,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:17:18,246 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 109 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-28 03:17:18,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 274 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-28 03:17:18,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-12-28 03:17:18,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 152. [2021-12-28 03:17:18,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 92 states have (on average 1.2173913043478262) internal successors, (112), 93 states have internal predecessors, (112), 48 states have call successors, (48), 11 states have call predecessors, (48), 11 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2021-12-28 03:17:18,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 207 transitions. [2021-12-28 03:17:18,280 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 207 transitions. Word has length 124 [2021-12-28 03:17:18,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:17:18,281 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 207 transitions. [2021-12-28 03:17:18,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-28 03:17:18,281 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 207 transitions. [2021-12-28 03:17:18,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-28 03:17:18,283 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:17:18,283 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:17:18,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 03:17:18,284 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:17:18,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:17:18,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1826334412, now seen corresponding path program 1 times [2021-12-28 03:17:18,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:17:18,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260538089] [2021-12-28 03:17:18,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:18,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:17:18,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:18,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:17:18,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:18,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:18,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:18,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 03:17:18,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:18,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:17:18,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:18,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-28 03:17:18,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:18,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:17:18,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:18,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-28 03:17:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:18,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-28 03:17:18,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:18,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 03:17:18,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:18,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 03:17:18,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:18,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 03:17:18,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:18,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 03:17:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:18,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 03:17:18,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:18,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 03:17:18,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:18,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 03:17:18,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:18,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 03:17:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:18,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-28 03:17:18,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:18,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-28 03:17:18,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:18,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 03:17:18,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:18,573 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2021-12-28 03:17:18,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:17:18,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260538089] [2021-12-28 03:17:18,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260538089] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:17:18,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462256870] [2021-12-28 03:17:18,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:18,575 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:17:18,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:17:18,578 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) [2021-12-28 03:17:18,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 03:17:19,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:19,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 2740 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-28 03:17:19,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:17:19,318 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2021-12-28 03:17:19,318 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:17:19,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462256870] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:17:19,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:17:19,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2021-12-28 03:17:19,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047261289] [2021-12-28 03:17:19,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:17:19,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:17:19,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:17:19,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:17:19,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-28 03:17:19,325 INFO L87 Difference]: Start difference. First operand 152 states and 207 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-28 03:17:19,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:17:19,510 INFO L93 Difference]: Finished difference Result 280 states and 393 transitions. [2021-12-28 03:17:19,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:17:19,511 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 124 [2021-12-28 03:17:19,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:17:19,515 INFO L225 Difference]: With dead ends: 280 [2021-12-28 03:17:19,516 INFO L226 Difference]: Without dead ends: 155 [2021-12-28 03:17:19,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-12-28 03:17:19,520 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 230 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:17:19,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 428 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:17:19,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-12-28 03:17:19,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2021-12-28 03:17:19,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 94 states have (on average 1.2127659574468086) internal successors, (114), 96 states have internal predecessors, (114), 48 states have call successors, (48), 11 states have call predecessors, (48), 12 states have return successors, (55), 47 states have call predecessors, (55), 47 states have call successors, (55) [2021-12-28 03:17:19,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 217 transitions. [2021-12-28 03:17:19,547 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 217 transitions. Word has length 124 [2021-12-28 03:17:19,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:17:19,548 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 217 transitions. [2021-12-28 03:17:19,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-28 03:17:19,548 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 217 transitions. [2021-12-28 03:17:19,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-28 03:17:19,551 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:17:19,551 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:17:19,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-28 03:17:19,767 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 [2021-12-28 03:17:19,768 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:17:19,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:17:19,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1417930777, now seen corresponding path program 1 times [2021-12-28 03:17:19,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:17:19,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95096543] [2021-12-28 03:17:19,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:19,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:17:19,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:19,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:17:19,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:19,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:19,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 03:17:19,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:19,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:17:19,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:19,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-28 03:17:19,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:19,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:17:19,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:19,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 03:17:19,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:20,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:17:20,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:20,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:17:20,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:20,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 03:17:20,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:20,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 03:17:20,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:20,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-28 03:17:20,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:20,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 03:17:20,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:20,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-28 03:17:20,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:20,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 03:17:20,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:20,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 03:17:20,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:20,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 03:17:20,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:20,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 03:17:20,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:20,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-28 03:17:20,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:20,145 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-12-28 03:17:20,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:17:20,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95096543] [2021-12-28 03:17:20,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95096543] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:17:20,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667402460] [2021-12-28 03:17:20,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:20,146 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:17:20,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:17:20,147 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) [2021-12-28 03:17:20,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 03:17:20,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:20,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 2745 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-28 03:17:20,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:17:20,895 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-12-28 03:17:20,895 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:17:20,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667402460] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:17:20,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:17:20,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2021-12-28 03:17:20,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265566677] [2021-12-28 03:17:20,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:17:20,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:17:20,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:17:20,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:17:20,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-12-28 03:17:20,897 INFO L87 Difference]: Start difference. First operand 155 states and 217 transitions. Second operand has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-28 03:17:21,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:17:21,112 INFO L93 Difference]: Finished difference Result 266 states and 374 transitions. [2021-12-28 03:17:21,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:17:21,113 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) Word has length 126 [2021-12-28 03:17:21,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:17:21,114 INFO L225 Difference]: With dead ends: 266 [2021-12-28 03:17:21,114 INFO L226 Difference]: Without dead ends: 155 [2021-12-28 03:17:21,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-12-28 03:17:21,116 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 248 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:17:21,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 566 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:17:21,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-12-28 03:17:21,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2021-12-28 03:17:21,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 94 states have (on average 1.2127659574468086) internal successors, (114), 96 states have internal predecessors, (114), 48 states have call successors, (48), 11 states have call predecessors, (48), 12 states have return successors, (53), 47 states have call predecessors, (53), 47 states have call successors, (53) [2021-12-28 03:17:21,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 215 transitions. [2021-12-28 03:17:21,125 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 215 transitions. Word has length 126 [2021-12-28 03:17:21,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:17:21,125 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 215 transitions. [2021-12-28 03:17:21,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-28 03:17:21,126 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 215 transitions. [2021-12-28 03:17:21,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-28 03:17:21,130 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:17:21,130 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:17:21,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-28 03:17:21,336 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 [2021-12-28 03:17:21,336 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:17:21,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:17:21,337 INFO L85 PathProgramCache]: Analyzing trace with hash -690371052, now seen corresponding path program 2 times [2021-12-28 03:17:21,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:17:21,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332212701] [2021-12-28 03:17:21,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:21,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:17:21,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:17:21,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:21,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 03:17:21,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:17:21,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-28 03:17:21,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:17:21,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 03:17:21,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:17:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:17:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 03:17:21,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 03:17:21,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 03:17:21,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-28 03:17:21,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 03:17:21,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 03:17:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 03:17:21,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-28 03:17:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-28 03:17:21,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-28 03:17:21,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:21,672 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-12-28 03:17:21,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:17:21,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332212701] [2021-12-28 03:17:21,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332212701] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:17:21,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419854804] [2021-12-28 03:17:21,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 03:17:21,673 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:17:21,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:17:21,674 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) [2021-12-28 03:17:21,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-28 03:17:22,350 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 03:17:22,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:17:22,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 2750 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-28 03:17:22,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:17:22,542 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-12-28 03:17:22,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:17:22,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419854804] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:17:22,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:17:22,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 13 [2021-12-28 03:17:22,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298225184] [2021-12-28 03:17:22,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:17:22,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 03:17:22,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:17:22,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 03:17:22,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-12-28 03:17:22,545 INFO L87 Difference]: Start difference. First operand 155 states and 215 transitions. Second operand has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 5 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) [2021-12-28 03:17:22,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:17:22,709 INFO L93 Difference]: Finished difference Result 260 states and 361 transitions. [2021-12-28 03:17:22,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 03:17:22,709 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 5 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) Word has length 128 [2021-12-28 03:17:22,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:17:22,715 INFO L225 Difference]: With dead ends: 260 [2021-12-28 03:17:22,715 INFO L226 Difference]: Without dead ends: 155 [2021-12-28 03:17:22,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-28 03:17:22,719 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 105 mSDsluCounter, 952 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:17:22,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 1142 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:17:22,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-12-28 03:17:22,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2021-12-28 03:17:22,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 94 states have (on average 1.2127659574468086) internal successors, (114), 96 states have internal predecessors, (114), 48 states have call successors, (48), 11 states have call predecessors, (48), 12 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2021-12-28 03:17:22,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 212 transitions. [2021-12-28 03:17:22,735 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 212 transitions. Word has length 128 [2021-12-28 03:17:22,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:17:22,735 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 212 transitions. [2021-12-28 03:17:22,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 5 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) [2021-12-28 03:17:22,735 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 212 transitions. [2021-12-28 03:17:22,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-28 03:17:22,737 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:17:22,738 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:17:22,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-28 03:17:22,947 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 [2021-12-28 03:17:22,947 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:17:22,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:17:22,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1463523847, now seen corresponding path program 3 times [2021-12-28 03:17:22,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:17:22,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187632845] [2021-12-28 03:17:22,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:22,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:17:23,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:23,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:17:23,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:23,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:23,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:23,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 03:17:23,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:23,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:17:23,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:23,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-28 03:17:23,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:23,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:17:23,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:23,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 03:17:23,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:23,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:17:23,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:23,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:17:23,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:23,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 03:17:23,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:23,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 03:17:23,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:23,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 03:17:23,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:23,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-28 03:17:23,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:23,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 03:17:23,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:23,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 03:17:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:23,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-28 03:17:23,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:23,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-28 03:17:23,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:23,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-28 03:17:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:23,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 03:17:23,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:23,319 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-12-28 03:17:23,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:17:23,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187632845] [2021-12-28 03:17:23,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187632845] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:17:23,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534956244] [2021-12-28 03:17:23,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-28 03:17:23,320 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:17:23,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:17:23,321 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) [2021-12-28 03:17:23,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-28 03:17:23,995 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-28 03:17:23,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:17:24,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 2408 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-28 03:17:24,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:17:24,251 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-12-28 03:17:24,252 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:17:24,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534956244] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:17:24,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:17:24,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2021-12-28 03:17:24,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574312067] [2021-12-28 03:17:24,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:17:24,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:17:24,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:17:24,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:17:24,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2021-12-28 03:17:24,254 INFO L87 Difference]: Start difference. First operand 155 states and 212 transitions. Second operand has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-28 03:17:24,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:17:24,348 INFO L93 Difference]: Finished difference Result 255 states and 347 transitions. [2021-12-28 03:17:24,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:17:24,348 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 130 [2021-12-28 03:17:24,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:17:24,350 INFO L225 Difference]: With dead ends: 255 [2021-12-28 03:17:24,350 INFO L226 Difference]: Without dead ends: 155 [2021-12-28 03:17:24,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2021-12-28 03:17:24,351 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 2 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:17:24,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1124 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:17:24,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-12-28 03:17:24,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2021-12-28 03:17:24,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 94 states have (on average 1.2127659574468086) internal successors, (114), 96 states have internal predecessors, (114), 48 states have call successors, (48), 11 states have call predecessors, (48), 12 states have return successors, (49), 47 states have call predecessors, (49), 47 states have call successors, (49) [2021-12-28 03:17:24,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 211 transitions. [2021-12-28 03:17:24,361 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 211 transitions. Word has length 130 [2021-12-28 03:17:24,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:17:24,361 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 211 transitions. [2021-12-28 03:17:24,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-28 03:17:24,362 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 211 transitions. [2021-12-28 03:17:24,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-28 03:17:24,362 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:17:24,363 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:17:24,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-28 03:17:24,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:17:24,587 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:17:24,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:17:24,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1474768542, now seen corresponding path program 4 times [2021-12-28 03:17:24,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:17:24,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695547879] [2021-12-28 03:17:24,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:24,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:17:24,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:24,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:17:24,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:24,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:24,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:24,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 03:17:24,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:24,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:17:24,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:24,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-28 03:17:24,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:24,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:17:24,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:24,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 03:17:24,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:24,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:17:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:24,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:17:24,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:24,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 03:17:24,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:24,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 03:17:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:24,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 03:17:24,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:24,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-28 03:17:24,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:24,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 03:17:24,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:24,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 03:17:24,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:24,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-28 03:17:24,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:24,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-28 03:17:24,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:24,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 03:17:24,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:24,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-28 03:17:24,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:24,917 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-12-28 03:17:24,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:17:24,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695547879] [2021-12-28 03:17:24,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695547879] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:17:24,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197088997] [2021-12-28 03:17:24,918 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-28 03:17:24,918 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:17:24,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:17:24,919 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) [2021-12-28 03:17:24,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-28 03:17:25,291 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-28 03:17:25,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:17:25,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 2760 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-28 03:17:25,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:17:25,609 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2021-12-28 03:17:25,609 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:17:25,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197088997] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:17:25,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:17:25,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 22 [2021-12-28 03:17:25,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236327022] [2021-12-28 03:17:25,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:17:25,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 03:17:25,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:17:25,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 03:17:25,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2021-12-28 03:17:25,610 INFO L87 Difference]: Start difference. First operand 155 states and 211 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 6 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2021-12-28 03:17:26,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:17:26,040 INFO L93 Difference]: Finished difference Result 249 states and 335 transitions. [2021-12-28 03:17:26,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 03:17:26,041 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 6 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) Word has length 132 [2021-12-28 03:17:26,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:17:26,042 INFO L225 Difference]: With dead ends: 249 [2021-12-28 03:17:26,042 INFO L226 Difference]: Without dead ends: 155 [2021-12-28 03:17:26,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=713, Unknown=0, NotChecked=0, Total=812 [2021-12-28 03:17:26,044 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 280 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-28 03:17:26,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 1029 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-28 03:17:26,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-12-28 03:17:26,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2021-12-28 03:17:26,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 94 states have (on average 1.2127659574468086) internal successors, (114), 96 states have internal predecessors, (114), 48 states have call successors, (48), 11 states have call predecessors, (48), 12 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2021-12-28 03:17:26,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 210 transitions. [2021-12-28 03:17:26,052 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 210 transitions. Word has length 132 [2021-12-28 03:17:26,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:17:26,053 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 210 transitions. [2021-12-28 03:17:26,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 6 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2021-12-28 03:17:26,053 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 210 transitions. [2021-12-28 03:17:26,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-28 03:17:26,054 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:17:26,054 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:17:26,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-28 03:17:26,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:17:26,271 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:17:26,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:17:26,272 INFO L85 PathProgramCache]: Analyzing trace with hash 248232963, now seen corresponding path program 1 times [2021-12-28 03:17:26,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:17:26,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546475313] [2021-12-28 03:17:26,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:26,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:17:26,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:17:26,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:26,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 03:17:26,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:17:26,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-28 03:17:26,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:17:26,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 03:17:26,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:17:26,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:17:26,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 03:17:26,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 03:17:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 03:17:26,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-28 03:17:26,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 03:17:26,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 03:17:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-28 03:17:26,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-28 03:17:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 03:17:26,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-28 03:17:26,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:26,596 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2021-12-28 03:17:26,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:17:26,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546475313] [2021-12-28 03:17:26,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546475313] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:17:26,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:17:26,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-28 03:17:26,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327606497] [2021-12-28 03:17:26,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:17:26,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 03:17:26,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:17:26,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 03:17:26,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-28 03:17:26,598 INFO L87 Difference]: Start difference. First operand 155 states and 210 transitions. Second operand has 10 states, 9 states have (on average 5.333333333333333) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2021-12-28 03:17:27,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:17:27,473 INFO L93 Difference]: Finished difference Result 174 states and 241 transitions. [2021-12-28 03:17:27,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 03:17:27,474 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.333333333333333) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 134 [2021-12-28 03:17:27,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:17:27,475 INFO L225 Difference]: With dead ends: 174 [2021-12-28 03:17:27,475 INFO L226 Difference]: Without dead ends: 172 [2021-12-28 03:17:27,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-12-28 03:17:27,476 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 131 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-28 03:17:27,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 844 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 823 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-28 03:17:27,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-12-28 03:17:27,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 164. [2021-12-28 03:17:27,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 100 states have (on average 1.2) internal successors, (120), 103 states have internal predecessors, (120), 49 states have call successors, (49), 12 states have call predecessors, (49), 14 states have return successors, (59), 48 states have call predecessors, (59), 48 states have call successors, (59) [2021-12-28 03:17:27,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 228 transitions. [2021-12-28 03:17:27,485 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 228 transitions. Word has length 134 [2021-12-28 03:17:27,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:17:27,485 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 228 transitions. [2021-12-28 03:17:27,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.333333333333333) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2021-12-28 03:17:27,485 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 228 transitions. [2021-12-28 03:17:27,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-12-28 03:17:27,486 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:17:27,486 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:17:27,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 03:17:27,487 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:17:27,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:17:27,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1815865141, now seen corresponding path program 1 times [2021-12-28 03:17:27,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:17:27,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115442547] [2021-12-28 03:17:27,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:27,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:17:27,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:17:27,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:27,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 03:17:27,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:17:27,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-28 03:17:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:17:27,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 03:17:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:17:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:17:27,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 03:17:27,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 03:17:27,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 03:17:27,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-28 03:17:27,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 03:17:27,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 03:17:27,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-28 03:17:27,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-28 03:17:27,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 03:17:27,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-28 03:17:27,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:27,853 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2021-12-28 03:17:27,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:17:27,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115442547] [2021-12-28 03:17:27,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115442547] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:17:27,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711312136] [2021-12-28 03:17:27,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:27,855 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:17:27,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:17:27,856 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) [2021-12-28 03:17:27,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-28 03:17:28,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:28,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 2777 conjuncts, 37 conjunts are in the unsatisfiable core [2021-12-28 03:17:28,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:17:28,553 INFO L387 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 17 treesize of output 9 [2021-12-28 03:17:28,720 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 84 proven. 4 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2021-12-28 03:17:28,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:17:29,204 INFO L353 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-12-28 03:17:29,205 INFO L387 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 21 treesize of output 20 [2021-12-28 03:17:29,235 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-12-28 03:17:29,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711312136] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:17:29,235 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 03:17:29,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 12] total 29 [2021-12-28 03:17:29,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086173278] [2021-12-28 03:17:29,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 03:17:29,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-28 03:17:29,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:17:29,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-28 03:17:29,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=745, Unknown=0, NotChecked=0, Total=812 [2021-12-28 03:17:29,237 INFO L87 Difference]: Start difference. First operand 164 states and 228 transitions. Second operand has 29 states, 26 states have (on average 4.5) internal successors, (117), 21 states have internal predecessors, (117), 11 states have call successors, (56), 7 states have call predecessors, (56), 8 states have return successors, (53), 10 states have call predecessors, (53), 10 states have call successors, (53) [2021-12-28 03:17:32,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:17:32,037 INFO L93 Difference]: Finished difference Result 329 states and 462 transitions. [2021-12-28 03:17:32,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-28 03:17:32,039 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 4.5) internal successors, (117), 21 states have internal predecessors, (117), 11 states have call successors, (56), 7 states have call predecessors, (56), 8 states have return successors, (53), 10 states have call predecessors, (53), 10 states have call successors, (53) Word has length 138 [2021-12-28 03:17:32,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:17:32,040 INFO L225 Difference]: With dead ends: 329 [2021-12-28 03:17:32,040 INFO L226 Difference]: Without dead ends: 169 [2021-12-28 03:17:32,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 299 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=210, Invalid=1952, Unknown=0, NotChecked=0, Total=2162 [2021-12-28 03:17:32,041 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 185 mSDsluCounter, 1971 mSDsCounter, 0 mSdLazyCounter, 3079 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 2135 SdHoareTripleChecker+Invalid, 3412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 3079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 194 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-28 03:17:32,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 2135 Invalid, 3412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 3079 Invalid, 0 Unknown, 194 Unchecked, 2.3s Time] [2021-12-28 03:17:32,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-12-28 03:17:32,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 164. [2021-12-28 03:17:32,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 100 states have (on average 1.19) internal successors, (119), 103 states have internal predecessors, (119), 49 states have call successors, (49), 12 states have call predecessors, (49), 14 states have return successors, (58), 48 states have call predecessors, (58), 48 states have call successors, (58) [2021-12-28 03:17:32,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 226 transitions. [2021-12-28 03:17:32,049 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 226 transitions. Word has length 138 [2021-12-28 03:17:32,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:17:32,050 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 226 transitions. [2021-12-28 03:17:32,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 4.5) internal successors, (117), 21 states have internal predecessors, (117), 11 states have call successors, (56), 7 states have call predecessors, (56), 8 states have return successors, (53), 10 states have call predecessors, (53), 10 states have call successors, (53) [2021-12-28 03:17:32,050 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 226 transitions. [2021-12-28 03:17:32,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-28 03:17:32,051 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:17:32,051 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:17:32,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-28 03:17:32,259 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 [2021-12-28 03:17:32,260 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:17:32,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:17:32,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1204168502, now seen corresponding path program 1 times [2021-12-28 03:17:32,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:17:32,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856050426] [2021-12-28 03:17:32,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:32,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:17:32,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:32,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:17:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:32,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:32,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:17:32,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:32,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:32,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:32,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 03:17:32,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:32,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-28 03:17:32,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:32,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-28 03:17:32,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:32,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-28 03:17:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:32,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-28 03:17:32,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:32,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 03:17:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:32,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 03:17:32,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:32,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 03:17:32,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:32,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 03:17:32,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:32,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 03:17:32,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:32,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 03:17:32,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:32,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-28 03:17:32,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:32,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 03:17:32,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:32,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-28 03:17:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:32,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-28 03:17:32,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:32,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-28 03:17:32,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:32,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-28 03:17:32,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:32,538 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-12-28 03:17:32,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:17:32,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856050426] [2021-12-28 03:17:32,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856050426] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:17:32,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:17:32,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:17:32,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718370735] [2021-12-28 03:17:32,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:17:32,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:17:32,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:17:32,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:17:32,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:17:32,540 INFO L87 Difference]: Start difference. First operand 164 states and 226 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-28 03:17:33,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:17:33,062 INFO L93 Difference]: Finished difference Result 295 states and 412 transitions. [2021-12-28 03:17:33,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 03:17:33,063 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 153 [2021-12-28 03:17:33,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:17:33,064 INFO L225 Difference]: With dead ends: 295 [2021-12-28 03:17:33,064 INFO L226 Difference]: Without dead ends: 171 [2021-12-28 03:17:33,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-12-28 03:17:33,065 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 110 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 03:17:33,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 453 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-28 03:17:33,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-12-28 03:17:33,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 168. [2021-12-28 03:17:33,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 103 states have (on average 1.203883495145631) internal successors, (124), 107 states have internal predecessors, (124), 49 states have call successors, (49), 12 states have call predecessors, (49), 15 states have return successors, (59), 48 states have call predecessors, (59), 48 states have call successors, (59) [2021-12-28 03:17:33,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 232 transitions. [2021-12-28 03:17:33,074 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 232 transitions. Word has length 153 [2021-12-28 03:17:33,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:17:33,075 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 232 transitions. [2021-12-28 03:17:33,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-28 03:17:33,075 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 232 transitions. [2021-12-28 03:17:33,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-28 03:17:33,076 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:17:33,076 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:17:33,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 03:17:33,076 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:17:33,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:17:33,076 INFO L85 PathProgramCache]: Analyzing trace with hash -446653811, now seen corresponding path program 1 times [2021-12-28 03:17:33,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:17:33,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528316067] [2021-12-28 03:17:33,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:33,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:17:33,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:33,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:17:33,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:33,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:33,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:33,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:17:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:33,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:33,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:33,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 03:17:33,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:33,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-28 03:17:33,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:33,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-28 03:17:33,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:33,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-28 03:17:33,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:33,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-28 03:17:33,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:33,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 03:17:33,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:33,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 03:17:33,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:33,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 03:17:33,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:33,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 03:17:33,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:33,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 03:17:33,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:33,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-28 03:17:33,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:33,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 03:17:33,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:33,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-28 03:17:33,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:33,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-28 03:17:33,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:33,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-28 03:17:33,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:33,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-28 03:17:33,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:33,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-28 03:17:33,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:33,405 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-12-28 03:17:33,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:17:33,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528316067] [2021-12-28 03:17:33,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528316067] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:17:33,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513637894] [2021-12-28 03:17:33,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:33,406 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:17:33,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:17:33,415 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) [2021-12-28 03:17:33,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-28 03:17:33,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:33,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 2955 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-28 03:17:33,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:17:34,115 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-12-28 03:17:34,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:17:34,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513637894] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:17:34,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:17:34,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2021-12-28 03:17:34,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101112462] [2021-12-28 03:17:34,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:17:34,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 03:17:34,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:17:34,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 03:17:34,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2021-12-28 03:17:34,117 INFO L87 Difference]: Start difference. First operand 168 states and 232 transitions. Second operand has 9 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-28 03:17:34,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:17:34,254 INFO L93 Difference]: Finished difference Result 314 states and 446 transitions. [2021-12-28 03:17:34,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 03:17:34,254 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 154 [2021-12-28 03:17:34,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:17:34,255 INFO L225 Difference]: With dead ends: 314 [2021-12-28 03:17:34,255 INFO L226 Difference]: Without dead ends: 173 [2021-12-28 03:17:34,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-12-28 03:17:34,256 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 12 mSDsluCounter, 1343 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:17:34,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1542 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:17:34,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-12-28 03:17:34,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2021-12-28 03:17:34,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 107 states have (on average 1.1962616822429906) internal successors, (128), 112 states have internal predecessors, (128), 49 states have call successors, (49), 12 states have call predecessors, (49), 16 states have return successors, (68), 48 states have call predecessors, (68), 48 states have call successors, (68) [2021-12-28 03:17:34,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 245 transitions. [2021-12-28 03:17:34,265 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 245 transitions. Word has length 154 [2021-12-28 03:17:34,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:17:34,265 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 245 transitions. [2021-12-28 03:17:34,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-28 03:17:34,265 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 245 transitions. [2021-12-28 03:17:34,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-28 03:17:34,266 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:17:34,266 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:17:34,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-28 03:17:34,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:17:34,479 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:17:34,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:17:34,480 INFO L85 PathProgramCache]: Analyzing trace with hash -717526488, now seen corresponding path program 1 times [2021-12-28 03:17:34,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:17:34,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942720071] [2021-12-28 03:17:34,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:34,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:17:34,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:34,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:17:34,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:34,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:34,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:34,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:17:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:34,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:34,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:34,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 03:17:34,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:34,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-28 03:17:34,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:34,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:17:34,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:34,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 03:17:34,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:34,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-28 03:17:34,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:34,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-28 03:17:34,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:34,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-28 03:17:34,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:34,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 03:17:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:34,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-28 03:17:34,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:34,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-28 03:17:34,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:34,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-28 03:17:34,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:34,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-28 03:17:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:34,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-28 03:17:34,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:34,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-28 03:17:34,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:34,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-28 03:17:34,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:34,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-28 03:17:34,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:34,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-28 03:17:34,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:34,795 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-12-28 03:17:34,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:17:34,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942720071] [2021-12-28 03:17:34,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942720071] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:17:34,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123907091] [2021-12-28 03:17:34,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:34,796 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:17:34,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:17:34,797 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) [2021-12-28 03:17:34,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-28 03:17:35,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:35,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 2960 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-28 03:17:35,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:17:35,489 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-28 03:17:35,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:17:35,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123907091] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:17:35,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:17:35,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2021-12-28 03:17:35,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135089198] [2021-12-28 03:17:35,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:17:35,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:17:35,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:17:35,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:17:35,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-28 03:17:35,491 INFO L87 Difference]: Start difference. First operand 173 states and 245 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-28 03:17:35,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:17:35,709 INFO L93 Difference]: Finished difference Result 319 states and 469 transitions. [2021-12-28 03:17:35,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:17:35,710 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 156 [2021-12-28 03:17:35,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:17:35,711 INFO L225 Difference]: With dead ends: 319 [2021-12-28 03:17:35,711 INFO L226 Difference]: Without dead ends: 173 [2021-12-28 03:17:35,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-12-28 03:17:35,712 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 17 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:17:35,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 711 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 47 Unchecked, 0.2s Time] [2021-12-28 03:17:35,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-12-28 03:17:35,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2021-12-28 03:17:35,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 107 states have (on average 1.1869158878504673) internal successors, (127), 112 states have internal predecessors, (127), 49 states have call successors, (49), 12 states have call predecessors, (49), 16 states have return successors, (68), 48 states have call predecessors, (68), 48 states have call successors, (68) [2021-12-28 03:17:35,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 244 transitions. [2021-12-28 03:17:35,721 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 244 transitions. Word has length 156 [2021-12-28 03:17:35,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:17:35,722 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 244 transitions. [2021-12-28 03:17:35,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-28 03:17:35,722 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 244 transitions. [2021-12-28 03:17:35,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-28 03:17:35,723 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:17:35,723 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:17:35,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-28 03:17:35,938 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,SelfDestructingSolverStorable10 [2021-12-28 03:17:35,939 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:17:35,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:17:35,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1734965094, now seen corresponding path program 1 times [2021-12-28 03:17:35,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:17:35,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786068027] [2021-12-28 03:17:35,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:35,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:17:36,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:36,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:17:36,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:36,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:36,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:36,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:17:36,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:36,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:36,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:36,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 03:17:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:36,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-28 03:17:36,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:36,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:17:36,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:36,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 03:17:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:36,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-28 03:17:36,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:36,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-28 03:17:36,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:36,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-28 03:17:36,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:36,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 03:17:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:36,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-28 03:17:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:36,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-28 03:17:36,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:36,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-28 03:17:36,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:36,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-28 03:17:36,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:36,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-28 03:17:36,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:36,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-28 03:17:36,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:36,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-28 03:17:36,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:36,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-28 03:17:36,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:36,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-28 03:17:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:36,328 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-12-28 03:17:36,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:17:36,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786068027] [2021-12-28 03:17:36,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786068027] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:17:36,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512180473] [2021-12-28 03:17:36,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:36,329 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:17:36,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:17:36,341 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) [2021-12-28 03:17:36,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-28 03:17:36,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:36,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 2965 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-28 03:17:36,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:17:37,018 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 132 proven. 1 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-12-28 03:17:37,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:17:37,239 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-12-28 03:17:37,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512180473] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-28 03:17:37,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:17:37,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 5] total 10 [2021-12-28 03:17:37,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151271452] [2021-12-28 03:17:37,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:17:37,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:17:37,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:17:37,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:17:37,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-28 03:17:37,241 INFO L87 Difference]: Start difference. First operand 173 states and 244 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-28 03:17:37,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:17:37,319 INFO L93 Difference]: Finished difference Result 313 states and 450 transitions. [2021-12-28 03:17:37,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 03:17:37,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 156 [2021-12-28 03:17:37,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:17:37,321 INFO L225 Difference]: With dead ends: 313 [2021-12-28 03:17:37,321 INFO L226 Difference]: Without dead ends: 179 [2021-12-28 03:17:37,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 347 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-28 03:17:37,322 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 5 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:17:37,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 596 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:17:37,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-12-28 03:17:37,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 176. [2021-12-28 03:17:37,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 110 states have (on average 1.1818181818181819) internal successors, (130), 114 states have internal predecessors, (130), 49 states have call successors, (49), 13 states have call predecessors, (49), 16 states have return successors, (68), 48 states have call predecessors, (68), 48 states have call successors, (68) [2021-12-28 03:17:37,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 247 transitions. [2021-12-28 03:17:37,332 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 247 transitions. Word has length 156 [2021-12-28 03:17:37,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:17:37,332 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 247 transitions. [2021-12-28 03:17:37,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-28 03:17:37,332 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 247 transitions. [2021-12-28 03:17:37,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-28 03:17:37,333 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:17:37,333 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:17:37,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-28 03:17:37,545 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 [2021-12-28 03:17:37,545 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:17:37,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:17:37,546 INFO L85 PathProgramCache]: Analyzing trace with hash -401247201, now seen corresponding path program 1 times [2021-12-28 03:17:37,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:17:37,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570388453] [2021-12-28 03:17:37,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:37,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:17:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:37,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:17:37,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:37,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:37,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:37,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:17:37,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:37,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:37,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:37,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 03:17:37,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:37,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-28 03:17:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:37,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:17:37,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:37,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 03:17:37,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:37,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-28 03:17:37,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:37,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-28 03:17:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:37,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-28 03:17:37,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:37,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-28 03:17:37,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:37,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-28 03:17:37,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:37,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 03:17:37,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:37,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 03:17:37,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:37,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-28 03:17:37,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:37,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-28 03:17:37,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:37,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-28 03:17:37,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:37,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-28 03:17:37,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:37,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-28 03:17:37,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:37,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-28 03:17:37,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:37,880 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2021-12-28 03:17:37,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:17:37,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570388453] [2021-12-28 03:17:37,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570388453] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:17:37,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395481531] [2021-12-28 03:17:37,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:37,881 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:17:37,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:17:37,882 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) [2021-12-28 03:17:37,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-28 03:17:38,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:38,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 2988 conjuncts, 58 conjunts are in the unsatisfiable core [2021-12-28 03:17:38,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:17:43,734 INFO L387 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 25 treesize of output 17 [2021-12-28 03:17:43,737 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-12-28 03:17:43,740 INFO L387 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 18 treesize of output 10 [2021-12-28 03:17:43,890 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-12-28 03:17:43,890 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:17:43,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395481531] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:17:43,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:17:43,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [7] total 19 [2021-12-28 03:17:43,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537061628] [2021-12-28 03:17:43,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:17:43,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-28 03:17:43,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:17:43,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-28 03:17:43,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=285, Unknown=1, NotChecked=0, Total=342 [2021-12-28 03:17:43,892 INFO L87 Difference]: Start difference. First operand 176 states and 247 transitions. Second operand has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 13 states have internal predecessors, (73), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2021-12-28 03:17:47,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:17:47,484 INFO L93 Difference]: Finished difference Result 385 states and 564 transitions. [2021-12-28 03:17:47,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-28 03:17:47,485 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 13 states have internal predecessors, (73), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 157 [2021-12-28 03:17:47,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:17:47,486 INFO L225 Difference]: With dead ends: 385 [2021-12-28 03:17:47,486 INFO L226 Difference]: Without dead ends: 247 [2021-12-28 03:17:47,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 178 SyntacticMatches, 7 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=137, Invalid=617, Unknown=2, NotChecked=0, Total=756 [2021-12-28 03:17:47,487 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 337 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 1291 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 205 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:17:47,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 896 Invalid, 1596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1291 Invalid, 0 Unknown, 205 Unchecked, 1.1s Time] [2021-12-28 03:17:47,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-12-28 03:17:47,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 197. [2021-12-28 03:17:47,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 125 states have (on average 1.168) internal successors, (146), 129 states have internal predecessors, (146), 53 states have call successors, (53), 14 states have call predecessors, (53), 18 states have return successors, (82), 53 states have call predecessors, (82), 52 states have call successors, (82) [2021-12-28 03:17:47,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 281 transitions. [2021-12-28 03:17:47,501 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 281 transitions. Word has length 157 [2021-12-28 03:17:47,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:17:47,502 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 281 transitions. [2021-12-28 03:17:47,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 13 states have internal predecessors, (73), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2021-12-28 03:17:47,502 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 281 transitions. [2021-12-28 03:17:47,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-28 03:17:47,503 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:17:47,504 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:17:47,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-28 03:17:47,725 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 [2021-12-28 03:17:47,725 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:17:47,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:17:47,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1843311197, now seen corresponding path program 1 times [2021-12-28 03:17:47,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:17:47,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21484183] [2021-12-28 03:17:47,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:47,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:17:47,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:47,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:17:47,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:47,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:47,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:47,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:17:47,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:47,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:47,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:47,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 03:17:47,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:47,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-28 03:17:47,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:47,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:17:47,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:47,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 03:17:47,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:47,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-28 03:17:47,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:47,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-28 03:17:47,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:47,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-28 03:17:47,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:47,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-28 03:17:47,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:47,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-28 03:17:47,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:47,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 03:17:47,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:47,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 03:17:47,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:47,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-28 03:17:47,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:47,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-28 03:17:47,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:47,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-28 03:17:47,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:47,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-28 03:17:47,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:47,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-28 03:17:47,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:47,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-28 03:17:47,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:47,912 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-12-28 03:17:47,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:17:47,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21484183] [2021-12-28 03:17:47,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21484183] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:17:47,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811913295] [2021-12-28 03:17:47,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:47,913 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:17:47,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:17:47,914 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) [2021-12-28 03:17:47,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-28 03:17:48,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:48,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 2983 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 03:17:48,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:17:48,578 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2021-12-28 03:17:48,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:17:48,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811913295] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:17:48,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:17:48,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2021-12-28 03:17:48,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41592236] [2021-12-28 03:17:48,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:17:48,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:17:48,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:17:48,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:17:48,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:17:48,580 INFO L87 Difference]: Start difference. First operand 197 states and 281 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-28 03:17:48,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:17:48,602 INFO L93 Difference]: Finished difference Result 343 states and 499 transitions. [2021-12-28 03:17:48,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:17:48,611 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 157 [2021-12-28 03:17:48,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:17:48,613 INFO L225 Difference]: With dead ends: 343 [2021-12-28 03:17:48,613 INFO L226 Difference]: Without dead ends: 185 [2021-12-28 03:17:48,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-28 03:17:48,614 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 6 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:17:48,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 604 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:17:48,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-12-28 03:17:48,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 182. [2021-12-28 03:17:48,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 115 states have (on average 1.1652173913043478) internal successors, (134), 119 states have internal predecessors, (134), 49 states have call successors, (49), 14 states have call predecessors, (49), 17 states have return successors, (68), 48 states have call predecessors, (68), 48 states have call successors, (68) [2021-12-28 03:17:48,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 251 transitions. [2021-12-28 03:17:48,624 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 251 transitions. Word has length 157 [2021-12-28 03:17:48,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:17:48,624 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 251 transitions. [2021-12-28 03:17:48,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-28 03:17:48,625 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 251 transitions. [2021-12-28 03:17:48,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-28 03:17:48,625 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:17:48,626 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:17:48,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-28 03:17:48,839 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 [2021-12-28 03:17:48,839 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:17:48,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:17:48,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1119511963, now seen corresponding path program 1 times [2021-12-28 03:17:48,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:17:48,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749086980] [2021-12-28 03:17:48,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:48,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:17:48,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:49,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:17:49,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:49,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:49,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:49,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:17:49,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:49,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:49,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:49,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 03:17:49,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:49,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-28 03:17:49,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:49,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:17:49,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:49,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 03:17:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:49,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-28 03:17:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:49,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-28 03:17:49,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:49,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-28 03:17:49,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:49,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 03:17:49,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:49,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 03:17:49,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:49,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-28 03:17:49,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:49,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-28 03:17:49,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:49,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-28 03:17:49,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:49,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-28 03:17:49,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:49,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 03:17:49,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:49,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-28 03:17:49,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:49,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-28 03:17:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:49,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-28 03:17:49,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:49,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-28 03:17:49,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:49,123 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2021-12-28 03:17:49,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:17:49,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749086980] [2021-12-28 03:17:49,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749086980] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:17:49,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:17:49,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 03:17:49,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555547232] [2021-12-28 03:17:49,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:17:49,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 03:17:49,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:17:49,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 03:17:49,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-28 03:17:49,125 INFO L87 Difference]: Start difference. First operand 182 states and 251 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 7 states have internal predecessors, (60), 5 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2021-12-28 03:17:49,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:17:49,946 INFO L93 Difference]: Finished difference Result 339 states and 475 transitions. [2021-12-28 03:17:49,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 03:17:49,946 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 7 states have internal predecessors, (60), 5 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) Word has length 164 [2021-12-28 03:17:49,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:17:49,947 INFO L225 Difference]: With dead ends: 339 [2021-12-28 03:17:49,947 INFO L226 Difference]: Without dead ends: 185 [2021-12-28 03:17:49,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-12-28 03:17:49,948 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 186 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-28 03:17:49,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 524 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-28 03:17:49,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-12-28 03:17:49,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 182. [2021-12-28 03:17:49,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 115 states have (on average 1.1565217391304348) internal successors, (133), 119 states have internal predecessors, (133), 49 states have call successors, (49), 14 states have call predecessors, (49), 17 states have return successors, (68), 48 states have call predecessors, (68), 48 states have call successors, (68) [2021-12-28 03:17:49,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 250 transitions. [2021-12-28 03:17:49,958 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 250 transitions. Word has length 164 [2021-12-28 03:17:49,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:17:49,958 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 250 transitions. [2021-12-28 03:17:49,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 7 states have internal predecessors, (60), 5 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2021-12-28 03:17:49,959 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 250 transitions. [2021-12-28 03:17:49,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-28 03:17:49,976 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:17:49,976 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:17:49,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-28 03:17:49,976 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:17:49,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:17:49,976 INFO L85 PathProgramCache]: Analyzing trace with hash 897405012, now seen corresponding path program 1 times [2021-12-28 03:17:49,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:17:49,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439965021] [2021-12-28 03:17:49,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:49,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:17:50,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:17:50,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:50,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:17:50,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:50,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 03:17:50,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-28 03:17:50,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:17:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-28 03:17:50,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-28 03:17:50,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-28 03:17:50,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 03:17:50,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 03:17:50,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 03:17:50,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 03:17:50,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-28 03:17:50,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 03:17:50,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-28 03:17:50,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-28 03:17:50,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-28 03:17:50,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-28 03:17:50,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-28 03:17:50,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-28 03:17:50,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-28 03:17:50,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-28 03:17:50,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,360 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2021-12-28 03:17:50,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:17:50,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439965021] [2021-12-28 03:17:50,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439965021] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:17:50,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129519069] [2021-12-28 03:17:50,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:17:50,362 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:17:50,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:17:50,363 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) [2021-12-28 03:17:50,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-28 03:17:50,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:17:50,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 3070 conjuncts, 122 conjunts are in the unsatisfiable core [2021-12-28 03:17:50,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:17:50,936 INFO L387 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 [2021-12-28 03:17:50,957 INFO L387 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 [2021-12-28 03:17:51,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:17:51,083 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2021-12-28 03:17:51,199 INFO L387 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 [2021-12-28 03:17:51,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:17:51,275 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2021-12-28 03:17:51,342 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-28 03:17:52,328 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-12-28 03:17:52,357 INFO L353 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-12-28 03:17:52,357 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2021-12-28 03:17:52,437 INFO L387 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 [2021-12-28 03:17:52,744 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 [2021-12-28 03:17:52,824 INFO L353 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-12-28 03:17:52,825 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2021-12-28 03:17:52,877 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2577 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| v_ArrVal_2577) |c_#memory_int|)) is different from true [2021-12-28 03:17:52,883 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2580 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| v_ArrVal_2580))) is different from true [2021-12-28 03:17:52,894 INFO L387 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 [2021-12-28 03:17:55,015 INFO L387 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 [2021-12-28 03:18:10,026 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 164 proven. 119 refuted. 0 times theorem prover too weak. 63 trivial. 2 not checked. [2021-12-28 03:18:10,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:18:10,399 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2581 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.base| v_ArrVal_2581) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.offset|) 18446744073709551616) 0))) is different from false [2021-12-28 03:18:10,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129519069] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:18:10,405 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:18:10,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 33] total 38 [2021-12-28 03:18:10,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3981639] [2021-12-28 03:18:10,405 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 03:18:10,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-12-28 03:18:10,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:18:10,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-12-28 03:18:10,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1664, Unknown=4, NotChecked=252, Total=2070 [2021-12-28 03:18:10,407 INFO L87 Difference]: Start difference. First operand 182 states and 250 transitions. Second operand has 38 states, 37 states have (on average 4.0) internal successors, (148), 33 states have internal predecessors, (148), 12 states have call successors, (49), 12 states have call predecessors, (49), 12 states have return successors, (46), 12 states have call predecessors, (46), 12 states have call successors, (46)