./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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_compare_lexical_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 60926facf5511174d61dcd6a0b7a731efc9ccdb495bc26b58400da4cd6320ca0 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 13:57:08,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 13:57:08,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 13:57:09,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 13:57:09,018 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 13:57:09,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 13:57:09,021 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 13:57:09,023 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 13:57:09,024 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 13:57:09,027 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 13:57:09,028 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 13:57:09,029 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 13:57:09,029 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 13:57:09,031 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 13:57:09,032 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 13:57:09,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 13:57:09,035 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 13:57:09,036 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 13:57:09,037 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 13:57:09,043 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 13:57:09,045 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 13:57:09,046 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 13:57:09,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 13:57:09,048 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 13:57:09,052 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 13:57:09,053 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 13:57:09,053 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 13:57:09,054 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 13:57:09,055 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 13:57:09,055 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 13:57:09,056 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 13:57:09,056 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 13:57:09,057 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 13:57:09,058 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 13:57:09,059 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 13:57:09,059 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 13:57:09,060 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 13:57:09,060 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 13:57:09,060 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 13:57:09,061 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 13:57:09,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 13:57:09,062 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 13:57:09,085 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 13:57:09,086 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 13:57:09,087 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 13:57:09,087 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 13:57:09,087 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 13:57:09,088 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 13:57:09,088 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 13:57:09,088 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 13:57:09,088 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 13:57:09,088 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 13:57:09,089 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 13:57:09,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 13:57:09,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 13:57:09,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 13:57:09,090 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 13:57:09,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 13:57:09,090 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 13:57:09,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 13:57:09,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 13:57:09,090 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 13:57:09,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 13:57:09,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:57:09,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 13:57:09,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 13:57:09,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 13:57:09,091 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 13:57:09,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 13:57:09,092 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 13:57:09,093 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 13:57:09,093 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 13:57:09,093 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 13:57:09,093 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 60926facf5511174d61dcd6a0b7a731efc9ccdb495bc26b58400da4cd6320ca0 [2021-12-22 13:57:09,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 13:57:09,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 13:57:09,296 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 13:57:09,297 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 13:57:09,298 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 13:57:09,298 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i [2021-12-22 13:57:09,346 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa8beb577/7f14aeb28f594d34be051eceaa8a2d2d/FLAG339f7297e [2021-12-22 13:57:09,874 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 13:57:09,874 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i [2021-12-22 13:57:09,942 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa8beb577/7f14aeb28f594d34be051eceaa8a2d2d/FLAG339f7297e [2021-12-22 13:57:10,370 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa8beb577/7f14aeb28f594d34be051eceaa8a2d2d [2021-12-22 13:57:10,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 13:57:10,373 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 13:57:10,376 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 13:57:10,376 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 13:57:10,378 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 13:57:10,379 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:57:10" (1/1) ... [2021-12-22 13:57:10,380 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54522278 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:57:10, skipping insertion in model container [2021-12-22 13:57:10,380 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:57:10" (1/1) ... [2021-12-22 13:57:10,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 13:57:10,468 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 13:57:10,615 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_compare_lexical_harness.i[4505,4518] [2021-12-22 13:57:10,618 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_compare_lexical_harness.i[4565,4578] [2021-12-22 13:57:11,042 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:57:11,043 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:57:11,043 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:57:11,044 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:57:11,044 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:57:11,052 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:57:11,054 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:57:11,057 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:57:11,058 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:57:11,245 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-22 13:57:11,248 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-22 13:57:11,249 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-22 13:57:11,252 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-22 13:57:11,253 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-22 13:57:11,254 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-22 13:57:11,254 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-22 13:57:11,254 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-22 13:57:11,255 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-22 13:57:11,255 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-22 13:57:11,331 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-22 13:57:11,412 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:57:11,413 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:57:11,506 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:57:11,550 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 13:57:11,568 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_compare_lexical_harness.i[4505,4518] [2021-12-22 13:57:11,570 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_compare_lexical_harness.i[4565,4578] [2021-12-22 13:57:11,601 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:57:11,602 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:57:11,603 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:57:11,606 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:57:11,606 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:57:11,615 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:57:11,615 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:57:11,616 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:57:11,616 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:57:11,633 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-22 13:57:11,634 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-22 13:57:11,634 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-22 13:57:11,635 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-22 13:57:11,635 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-22 13:57:11,635 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-22 13:57:11,636 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-22 13:57:11,636 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-22 13:57:11,636 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-22 13:57:11,637 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-22 13:57:11,647 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-22 13:57:11,688 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:57:11,690 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:57:11,713 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:57:11,873 INFO L208 MainTranslator]: Completed translation [2021-12-22 13:57:11,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:57:11 WrapperNode [2021-12-22 13:57:11,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 13:57:11,875 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 13:57:11,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 13:57:11,875 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 13:57:11,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:57:11" (1/1) ... [2021-12-22 13:57:11,969 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:57:11" (1/1) ... [2021-12-22 13:57:12,064 INFO L137 Inliner]: procedures = 691, calls = 2656, calls flagged for inlining = 59, calls inlined = 6, statements flattened = 925 [2021-12-22 13:57:12,064 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 13:57:12,065 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 13:57:12,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 13:57:12,065 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 13:57:12,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:57:11" (1/1) ... [2021-12-22 13:57:12,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:57:11" (1/1) ... [2021-12-22 13:57:12,088 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:57:11" (1/1) ... [2021-12-22 13:57:12,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:57:11" (1/1) ... [2021-12-22 13:57:12,113 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:57:11" (1/1) ... [2021-12-22 13:57:12,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:57:11" (1/1) ... [2021-12-22 13:57:12,130 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:57:11" (1/1) ... [2021-12-22 13:57:12,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 13:57:12,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 13:57:12,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 13:57:12,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 13:57:12,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:57:11" (1/1) ... [2021-12-22 13:57:12,155 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:57:12,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:57:12,204 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) [2021-12-22 13:57:12,244 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 [2021-12-22 13:57:12,269 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-12-22 13:57:12,270 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-12-22 13:57:12,270 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_compare_lexical [2021-12-22 13:57:12,270 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_compare_lexical [2021-12-22 13:57:12,270 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-22 13:57:12,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 13:57:12,271 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-22 13:57:12,271 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-22 13:57:12,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 13:57:12,272 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_bounded [2021-12-22 13:57:12,272 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_bounded [2021-12-22 13:57:12,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-22 13:57:12,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-22 13:57:12,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 13:57:12,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 13:57:12,273 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2021-12-22 13:57:12,273 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2021-12-22 13:57:12,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 13:57:12,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 13:57:12,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 13:57:12,274 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-22 13:57:12,274 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-22 13:57:12,274 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-12-22 13:57:12,274 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-12-22 13:57:12,275 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-22 13:57:12,275 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-22 13:57:12,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 13:57:12,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 13:57:12,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 13:57:12,276 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-22 13:57:12,276 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-22 13:57:12,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 13:57:12,276 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_cursor_has_allocated_buffer_member [2021-12-22 13:57:12,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_cursor_has_allocated_buffer_member [2021-12-22 13:57:12,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 13:57:12,501 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 13:57:12,504 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 13:57:13,325 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 13:57:13,333 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 13:57:13,333 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 13:57:13,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:57:13 BoogieIcfgContainer [2021-12-22 13:57:13,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 13:57:13,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 13:57:13,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 13:57:13,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 13:57:13,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:57:10" (1/3) ... [2021-12-22 13:57:13,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@770f4f95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:57:13, skipping insertion in model container [2021-12-22 13:57:13,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:57:11" (2/3) ... [2021-12-22 13:57:13,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@770f4f95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:57:13, skipping insertion in model container [2021-12-22 13:57:13,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:57:13" (3/3) ... [2021-12-22 13:57:13,341 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_compare_lexical_harness.i [2021-12-22 13:57:13,344 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 13:57:13,345 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 13:57:13,386 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 13:57:13,393 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 [2021-12-22 13:57:13,394 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 13:57:13,411 INFO L276 IsEmpty]: Start isEmpty. Operand has 151 states, 92 states have (on average 1.2282608695652173) internal successors, (113), 93 states have internal predecessors, (113), 46 states have call successors, (46), 11 states have call predecessors, (46), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-12-22 13:57:13,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-22 13:57:13,425 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:57:13,425 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:57:13,426 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:57:13,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:57:13,432 INFO L85 PathProgramCache]: Analyzing trace with hash 616113637, now seen corresponding path program 1 times [2021-12-22 13:57:13,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:57:13,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831747247] [2021-12-22 13:57:13,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:57:13,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:57:13,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:13,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:57:13,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:13,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:57:13,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:13,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:57:13,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:13,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:57:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:14,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 13:57:14,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:14,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-22 13:57:14,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:14,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 13:57:14,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:14,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 13:57:14,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:14,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-22 13:57:14,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:14,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-22 13:57:14,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:14,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 13:57:14,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:14,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-22 13:57:14,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:14,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-22 13:57:14,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:14,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-22 13:57:14,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:14,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-22 13:57:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:14,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-22 13:57:14,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:14,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-22 13:57:14,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:14,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-22 13:57:14,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:14,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-22 13:57:14,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:14,162 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-12-22 13:57:14,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:57:14,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831747247] [2021-12-22 13:57:14,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831747247] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:57:14,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187798228] [2021-12-22 13:57:14,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:57:14,164 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:57:14,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:57:14,179 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) [2021-12-22 13:57:14,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 13:57:14,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:14,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 2699 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-22 13:57:14,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:57:14,896 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2021-12-22 13:57:14,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:57:14,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187798228] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:57:14,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 13:57:14,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2021-12-22 13:57:14,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040166924] [2021-12-22 13:57:14,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:57:14,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 13:57:14,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:57:14,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 13:57:14,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-12-22 13:57:14,919 INFO L87 Difference]: Start difference. First operand has 151 states, 92 states have (on average 1.2282608695652173) internal successors, (113), 93 states have internal predecessors, (113), 46 states have call successors, (46), 11 states have call predecessors, (46), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2021-12-22 13:57:15,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:57:15,109 INFO L93 Difference]: Finished difference Result 301 states and 447 transitions. [2021-12-22 13:57:15,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 13:57:15,111 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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 120 [2021-12-22 13:57:15,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:57:15,122 INFO L225 Difference]: With dead ends: 301 [2021-12-22 13:57:15,122 INFO L226 Difference]: Without dead ends: 148 [2021-12-22 13:57:15,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-12-22 13:57:15,134 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 222 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 13:57:15,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 432 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 13:57:15,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-12-22 13:57:15,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-12-22 13:57:15,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 89 states have (on average 1.202247191011236) internal successors, (107), 91 states have internal predecessors, (107), 46 states have call successors, (46), 11 states have call predecessors, (46), 12 states have return successors, (51), 45 states have call predecessors, (51), 45 states have call successors, (51) [2021-12-22 13:57:15,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 204 transitions. [2021-12-22 13:57:15,188 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 204 transitions. Word has length 120 [2021-12-22 13:57:15,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:57:15,190 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 204 transitions. [2021-12-22 13:57:15,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2021-12-22 13:57:15,190 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 204 transitions. [2021-12-22 13:57:15,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-22 13:57:15,199 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:57:15,199 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 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] [2021-12-22 13:57:15,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-22 13:57:15,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-22 13:57:15,414 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:57:15,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:57:15,415 INFO L85 PathProgramCache]: Analyzing trace with hash 138900842, now seen corresponding path program 1 times [2021-12-22 13:57:15,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:57:15,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457432319] [2021-12-22 13:57:15,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:57:15,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:57:15,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:15,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:57:15,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:15,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:57:15,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:15,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:57:15,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:15,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:57:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:15,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 13:57:15,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:15,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 13:57:15,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:15,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 13:57:15,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:15,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 13:57:15,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:15,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-22 13:57:15,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:15,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 13:57:15,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:15,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 13:57:15,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:15,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 13:57:15,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:15,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-22 13:57:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:15,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-22 13:57:15,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:15,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-22 13:57:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:15,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-22 13:57:15,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:15,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-22 13:57:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:15,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-22 13:57:15,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:15,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-22 13:57:15,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:15,862 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2021-12-22 13:57:15,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:57:15,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457432319] [2021-12-22 13:57:15,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457432319] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:57:15,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498517456] [2021-12-22 13:57:15,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:57:15,863 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:57:15,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:57:15,865 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) [2021-12-22 13:57:15,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 13:57:16,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:16,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 2704 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-22 13:57:16,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:57:16,513 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-12-22 13:57:16,513 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:57:16,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498517456] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:57:16,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 13:57:16,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 18 [2021-12-22 13:57:16,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283129461] [2021-12-22 13:57:16,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:57:16,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 13:57:16,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:57:16,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 13:57:16,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2021-12-22 13:57:16,517 INFO L87 Difference]: Start difference. First operand 148 states and 204 transitions. Second operand has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-22 13:57:16,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:57:16,784 INFO L93 Difference]: Finished difference Result 242 states and 337 transitions. [2021-12-22 13:57:16,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 13:57:16,785 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (21), 3 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 122 [2021-12-22 13:57:16,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:57:16,786 INFO L225 Difference]: With dead ends: 242 [2021-12-22 13:57:16,801 INFO L226 Difference]: Without dead ends: 148 [2021-12-22 13:57:16,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2021-12-22 13:57:16,803 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 233 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 13:57:16,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 738 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 13:57:16,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-12-22 13:57:16,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-12-22 13:57:16,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 89 states have (on average 1.202247191011236) internal successors, (107), 91 states have internal predecessors, (107), 46 states have call successors, (46), 11 states have call predecessors, (46), 12 states have return successors, (49), 45 states have call predecessors, (49), 45 states have call successors, (49) [2021-12-22 13:57:16,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 202 transitions. [2021-12-22 13:57:16,813 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 202 transitions. Word has length 122 [2021-12-22 13:57:16,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:57:16,814 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 202 transitions. [2021-12-22 13:57:16,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-22 13:57:16,814 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 202 transitions. [2021-12-22 13:57:16,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-22 13:57:16,815 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:57:16,815 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 3, 3, 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] [2021-12-22 13:57:16,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-22 13:57:17,035 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,SelfDestructingSolverStorable1 [2021-12-22 13:57:17,035 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:57:17,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:57:17,036 INFO L85 PathProgramCache]: Analyzing trace with hash -2034710092, now seen corresponding path program 2 times [2021-12-22 13:57:17,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:57:17,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297324932] [2021-12-22 13:57:17,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:57:17,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:57:17,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:17,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:57:17,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:17,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:57:17,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:17,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:57:17,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:17,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:57:17,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:17,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 13:57:17,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:17,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 13:57:17,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:17,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 13:57:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:17,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 13:57:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:17,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-22 13:57:17,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:17,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 13:57:17,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:17,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 13:57:17,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:17,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-22 13:57:17,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:17,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 13:57:17,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:17,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-22 13:57:17,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:17,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-22 13:57:17,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:17,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 13:57:17,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:17,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-22 13:57:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:17,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-22 13:57:17,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:17,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-22 13:57:17,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:17,309 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-12-22 13:57:17,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:57:17,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297324932] [2021-12-22 13:57:17,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297324932] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:57:17,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368263681] [2021-12-22 13:57:17,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 13:57:17,310 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:57:17,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:57:17,324 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) [2021-12-22 13:57:17,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-22 13:57:17,659 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-22 13:57:17,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 13:57:17,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 2312 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-22 13:57:17,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:57:17,863 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2021-12-22 13:57:17,863 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:57:17,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368263681] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:57:17,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 13:57:17,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2021-12-22 13:57:17,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46921572] [2021-12-22 13:57:17,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:57:17,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 13:57:17,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:57:17,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 13:57:17,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-22 13:57:17,866 INFO L87 Difference]: Start difference. First operand 148 states and 202 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2021-12-22 13:57:17,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:57:17,930 INFO L93 Difference]: Finished difference Result 160 states and 221 transitions. [2021-12-22 13:57:17,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 13:57:17,931 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (21), 2 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 126 [2021-12-22 13:57:17,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:57:17,933 INFO L225 Difference]: With dead ends: 160 [2021-12-22 13:57:17,934 INFO L226 Difference]: Without dead ends: 158 [2021-12-22 13:57:17,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-12-22 13:57:17,937 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 16 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:57:17,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 1354 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:57:17,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-12-22 13:57:17,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 157. [2021-12-22 13:57:17,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 95 states have (on average 1.1894736842105262) internal successors, (113), 98 states have internal predecessors, (113), 47 states have call successors, (47), 12 states have call predecessors, (47), 14 states have return successors, (58), 46 states have call predecessors, (58), 46 states have call successors, (58) [2021-12-22 13:57:17,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 218 transitions. [2021-12-22 13:57:17,955 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 218 transitions. Word has length 126 [2021-12-22 13:57:17,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:57:17,956 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 218 transitions. [2021-12-22 13:57:17,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2021-12-22 13:57:17,956 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 218 transitions. [2021-12-22 13:57:17,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-22 13:57:17,957 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:57:17,958 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 3, 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] [2021-12-22 13:57:17,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-22 13:57:18,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:57:18,178 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:57:18,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:57:18,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1275067964, now seen corresponding path program 1 times [2021-12-22 13:57:18,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:57:18,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315645478] [2021-12-22 13:57:18,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:57:18,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:57:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:18,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:57:18,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:18,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:57:18,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:18,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:57:18,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:18,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:57:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:18,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 13:57:18,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:18,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 13:57:18,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:18,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 13:57:18,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:18,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 13:57:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:18,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-22 13:57:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:18,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 13:57:18,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:18,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 13:57:18,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:18,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-22 13:57:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:18,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 13:57:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:18,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-22 13:57:18,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:18,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-22 13:57:18,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:18,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 13:57:18,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:18,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-22 13:57:18,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:18,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-22 13:57:18,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:18,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-22 13:57:18,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:18,435 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-12-22 13:57:18,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:57:18,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315645478] [2021-12-22 13:57:18,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315645478] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:57:18,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49878131] [2021-12-22 13:57:18,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:57:18,436 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:57:18,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:57:18,460 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) [2021-12-22 13:57:18,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-22 13:57:18,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:18,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 2726 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-22 13:57:18,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:57:19,128 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-12-22 13:57:19,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:57:19,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49878131] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:57:19,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 13:57:19,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2021-12-22 13:57:19,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783182395] [2021-12-22 13:57:19,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:57:19,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 13:57:19,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:57:19,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 13:57:19,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-12-22 13:57:19,131 INFO L87 Difference]: Start difference. First operand 157 states and 218 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 7 states have internal predecessors, (58), 4 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-22 13:57:19,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:57:19,380 INFO L93 Difference]: Finished difference Result 307 states and 437 transitions. [2021-12-22 13:57:19,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 13:57:19,381 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 7 states have internal predecessors, (58), 4 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 130 [2021-12-22 13:57:19,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:57:19,382 INFO L225 Difference]: With dead ends: 307 [2021-12-22 13:57:19,382 INFO L226 Difference]: Without dead ends: 187 [2021-12-22 13:57:19,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-12-22 13:57:19,383 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 277 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 13:57:19,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 836 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 13:57:19,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-12-22 13:57:19,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2021-12-22 13:57:19,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 111 states have (on average 1.1981981981981982) internal successors, (133), 114 states have internal predecessors, (133), 60 states have call successors, (60), 13 states have call predecessors, (60), 15 states have return successors, (73), 59 states have call predecessors, (73), 59 states have call successors, (73) [2021-12-22 13:57:19,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 266 transitions. [2021-12-22 13:57:19,397 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 266 transitions. Word has length 130 [2021-12-22 13:57:19,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:57:19,398 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 266 transitions. [2021-12-22 13:57:19,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 7 states have internal predecessors, (58), 4 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-22 13:57:19,398 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 266 transitions. [2021-12-22 13:57:19,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-22 13:57:19,399 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:57:19,399 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 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] [2021-12-22 13:57:19,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-22 13:57:19,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:57:19,613 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:57:19,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:57:19,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1527536575, now seen corresponding path program 1 times [2021-12-22 13:57:19,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:57:19,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080160763] [2021-12-22 13:57:19,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:57:19,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:57:19,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:20,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:57:20,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:20,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:57:20,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:20,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:57:20,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:20,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:57:20,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:20,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 13:57:20,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:20,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 13:57:20,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:20,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 13:57:20,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:20,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 13:57:20,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:20,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-22 13:57:20,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:20,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 13:57:20,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:20,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 13:57:20,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:20,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-22 13:57:20,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:20,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 13:57:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:20,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-22 13:57:20,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:20,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-22 13:57:20,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:20,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 13:57:20,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:20,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-22 13:57:20,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:20,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-22 13:57:20,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:20,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-22 13:57:20,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:20,365 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-12-22 13:57:20,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:57:20,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080160763] [2021-12-22 13:57:20,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080160763] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:57:20,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316437548] [2021-12-22 13:57:20,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:57:20,366 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:57:20,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:57:20,367 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) [2021-12-22 13:57:20,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-22 13:57:20,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:20,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 2731 conjuncts, 43 conjunts are in the unsatisfiable core [2021-12-22 13:57:20,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:57:20,863 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 [2021-12-22 13:57:20,867 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 [2021-12-22 13:57:21,136 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 15 treesize of output 7 [2021-12-22 13:57:21,138 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 15 treesize of output 7 [2021-12-22 13:57:21,321 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 103 proven. 4 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-12-22 13:57:21,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 13:57:21,890 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 38 treesize of output 32 [2021-12-22 13:57:21,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 13:57:21,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 13:57:21,950 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-12-22 13:57:21,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316437548] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 13:57:21,951 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 13:57:21,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11, 12] total 31 [2021-12-22 13:57:21,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010672622] [2021-12-22 13:57:21,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 13:57:21,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-12-22 13:57:21,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:57:21,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-12-22 13:57:21,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=856, Unknown=0, NotChecked=0, Total=930 [2021-12-22 13:57:21,954 INFO L87 Difference]: Start difference. First operand 187 states and 266 transitions. Second operand has 31 states, 27 states have (on average 4.074074074074074) internal successors, (110), 24 states have internal predecessors, (110), 14 states have call successors, (56), 7 states have call predecessors, (56), 8 states have return successors, (54), 11 states have call predecessors, (54), 13 states have call successors, (54) [2021-12-22 13:57:24,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:57:24,711 INFO L93 Difference]: Finished difference Result 495 states and 722 transitions. [2021-12-22 13:57:24,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-12-22 13:57:24,711 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 27 states have (on average 4.074074074074074) internal successors, (110), 24 states have internal predecessors, (110), 14 states have call successors, (56), 7 states have call predecessors, (56), 8 states have return successors, (54), 11 states have call predecessors, (54), 13 states have call successors, (54) Word has length 132 [2021-12-22 13:57:24,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:57:24,714 INFO L225 Difference]: With dead ends: 495 [2021-12-22 13:57:24,714 INFO L226 Difference]: Without dead ends: 288 [2021-12-22 13:57:24,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 286 SyntacticMatches, 5 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=281, Invalid=2911, Unknown=0, NotChecked=0, Total=3192 [2021-12-22 13:57:24,716 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 346 mSDsluCounter, 1574 mSDsCounter, 0 mSdLazyCounter, 3483 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 1744 SdHoareTripleChecker+Invalid, 4220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 3483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 402 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:57:24,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 1744 Invalid, 4220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 3483 Invalid, 0 Unknown, 402 Unchecked, 2.0s Time] [2021-12-22 13:57:24,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-12-22 13:57:24,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 273. [2021-12-22 13:57:24,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 158 states have (on average 1.1962025316455696) internal successors, (189), 164 states have internal predecessors, (189), 95 states have call successors, (95), 15 states have call predecessors, (95), 19 states have return successors, (123), 93 states have call predecessors, (123), 94 states have call successors, (123) [2021-12-22 13:57:24,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 407 transitions. [2021-12-22 13:57:24,784 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 407 transitions. Word has length 132 [2021-12-22 13:57:24,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:57:24,785 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 407 transitions. [2021-12-22 13:57:24,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 27 states have (on average 4.074074074074074) internal successors, (110), 24 states have internal predecessors, (110), 14 states have call successors, (56), 7 states have call predecessors, (56), 8 states have return successors, (54), 11 states have call predecessors, (54), 13 states have call successors, (54) [2021-12-22 13:57:24,785 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 407 transitions. [2021-12-22 13:57:24,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-22 13:57:24,786 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:57:24,786 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 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] [2021-12-22 13:57:24,831 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-22 13:57:25,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:57:25,031 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:57:25,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:57:25,032 INFO L85 PathProgramCache]: Analyzing trace with hash -132654696, now seen corresponding path program 1 times [2021-12-22 13:57:25,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:57:25,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544037143] [2021-12-22 13:57:25,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:57:25,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:57:25,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:25,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:57:25,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:25,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:57:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:25,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:57:25,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:25,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:57:25,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:25,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:57:25,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:25,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:57:25,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:25,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-22 13:57:25,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:25,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-22 13:57:25,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:25,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-22 13:57:25,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:25,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-22 13:57:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:25,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 13:57:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:25,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-22 13:57:25,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:25,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-22 13:57:25,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:25,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-22 13:57:25,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:25,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 13:57:25,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:25,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-22 13:57:25,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:25,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-22 13:57:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:25,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-22 13:57:25,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:25,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-22 13:57:25,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:25,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 13:57:25,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:25,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-22 13:57:25,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:25,878 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 27 proven. 21 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2021-12-22 13:57:25,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:57:25,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544037143] [2021-12-22 13:57:25,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544037143] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:57:25,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323277019] [2021-12-22 13:57:25,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:57:25,879 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:57:25,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:57:25,880 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) [2021-12-22 13:57:25,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-22 13:57:26,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:26,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 2766 conjuncts, 60 conjunts are in the unsatisfiable core [2021-12-22 13:57:26,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:57:26,322 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 10 treesize of output 8 [2021-12-22 13:57:26,757 INFO L353 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-12-22 13:57:26,757 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 1 case distinctions, treesize of input 30 treesize of output 29 [2021-12-22 13:57:32,631 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 132 proven. 16 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-12-22 13:57:32,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 13:57:34,237 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_453 Int) (|ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.offset| Int)) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.base|) |ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.offset| (select (select |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#lhs~0#1.base|) |c_ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#lhs~0#1.offset|)) (+ 8 |ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#rhs~0#1.offset|) v_ArrVal_453)) |c_ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#lhs~0#1.base|) |c_ULTIMATE.start_aws_byte_cursor_compare_lexical_harness_~#lhs~0#1.offset|))) (<= .cse0 (* 18446744073709551616 (div .cse0 18446744073709551616))))) is different from false [2021-12-22 13:57:34,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323277019] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:57:34,248 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-22 13:57:34,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 18] total 36 [2021-12-22 13:57:34,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692118993] [2021-12-22 13:57:34,249 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-22 13:57:34,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-12-22 13:57:34,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:57:34,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-12-22 13:57:34,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1345, Unknown=1, NotChecked=74, Total=1560 [2021-12-22 13:57:34,250 INFO L87 Difference]: Start difference. First operand 273 states and 407 transitions. Second operand has 36 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 31 states have internal predecessors, (110), 14 states have call successors, (43), 10 states have call predecessors, (43), 9 states have return successors, (39), 11 states have call predecessors, (39), 12 states have call successors, (39) [2021-12-22 13:57:42,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:57:42,261 INFO L93 Difference]: Finished difference Result 727 states and 1106 transitions. [2021-12-22 13:57:42,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-12-22 13:57:42,261 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 31 states have internal predecessors, (110), 14 states have call successors, (43), 10 states have call predecessors, (43), 9 states have return successors, (39), 11 states have call predecessors, (39), 12 states have call successors, (39) Word has length 143 [2021-12-22 13:57:42,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:57:42,265 INFO L225 Difference]: With dead ends: 727 [2021-12-22 13:57:42,265 INFO L226 Difference]: Without dead ends: 534 [2021-12-22 13:57:42,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 234 SyntacticMatches, 24 SemanticMatches, 73 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1729 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=501, Invalid=4898, Unknown=7, NotChecked=144, Total=5550 [2021-12-22 13:57:42,268 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 404 mSDsluCounter, 1967 mSDsCounter, 0 mSdLazyCounter, 3715 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 2191 SdHoareTripleChecker+Invalid, 6010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 3715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1939 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-22 13:57:42,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 2191 Invalid, 6010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 3715 Invalid, 0 Unknown, 1939 Unchecked, 2.4s Time] [2021-12-22 13:57:42,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2021-12-22 13:57:42,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 423. [2021-12-22 13:57:42,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 248 states have (on average 1.1774193548387097) internal successors, (292), 255 states have internal predecessors, (292), 147 states have call successors, (147), 22 states have call predecessors, (147), 27 states have return successors, (187), 145 states have call predecessors, (187), 146 states have call successors, (187) [2021-12-22 13:57:42,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 626 transitions. [2021-12-22 13:57:42,303 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 626 transitions. Word has length 143 [2021-12-22 13:57:42,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:57:42,303 INFO L470 AbstractCegarLoop]: Abstraction has 423 states and 626 transitions. [2021-12-22 13:57:42,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 31 states have internal predecessors, (110), 14 states have call successors, (43), 10 states have call predecessors, (43), 9 states have return successors, (39), 11 states have call predecessors, (39), 12 states have call successors, (39) [2021-12-22 13:57:42,303 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 626 transitions. [2021-12-22 13:57:42,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-22 13:57:42,305 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:57:42,305 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 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] [2021-12-22 13:57:42,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-22 13:57:42,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:57:42,519 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:57:42,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:57:42,520 INFO L85 PathProgramCache]: Analyzing trace with hash -845476291, now seen corresponding path program 1 times [2021-12-22 13:57:42,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:57:42,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597395216] [2021-12-22 13:57:42,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:57:42,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:57:42,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:42,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:57:42,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:42,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:57:42,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:42,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:57:42,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:42,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:57:42,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:42,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:57:42,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:42,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:57:42,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:42,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-22 13:57:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:42,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-22 13:57:42,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:42,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-22 13:57:42,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:42,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-22 13:57:42,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:42,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 13:57:42,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:42,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-22 13:57:42,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:42,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-22 13:57:42,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:42,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-22 13:57:42,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:42,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 13:57:42,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:42,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-22 13:57:42,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:42,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-22 13:57:42,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:42,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-22 13:57:42,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:42,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-22 13:57:42,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:42,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 13:57:42,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:42,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-22 13:57:42,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:42,878 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2021-12-22 13:57:42,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:57:42,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597395216] [2021-12-22 13:57:42,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597395216] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:57:42,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:57:42,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-22 13:57:42,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472193090] [2021-12-22 13:57:42,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:57:42,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-22 13:57:42,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:57:42,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-22 13:57:42,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-12-22 13:57:42,881 INFO L87 Difference]: Start difference. First operand 423 states and 626 transitions. Second operand has 13 states, 12 states have (on average 4.583333333333333) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2021-12-22 13:57:43,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:57:43,505 INFO L93 Difference]: Finished difference Result 449 states and 678 transitions. [2021-12-22 13:57:43,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 13:57:43,506 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.583333333333333) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 145 [2021-12-22 13:57:43,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:57:43,509 INFO L225 Difference]: With dead ends: 449 [2021-12-22 13:57:43,509 INFO L226 Difference]: Without dead ends: 447 [2021-12-22 13:57:43,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2021-12-22 13:57:43,510 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 161 mSDsluCounter, 953 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 13:57:43,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 1112 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 830 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 13:57:43,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-12-22 13:57:43,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 443. [2021-12-22 13:57:43,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 261 states have (on average 1.1685823754789273) internal successors, (305), 270 states have internal predecessors, (305), 151 states have call successors, (151), 23 states have call predecessors, (151), 30 states have return successors, (216), 149 states have call predecessors, (216), 150 states have call successors, (216) [2021-12-22 13:57:43,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 672 transitions. [2021-12-22 13:57:43,540 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 672 transitions. Word has length 145 [2021-12-22 13:57:43,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:57:43,541 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 672 transitions. [2021-12-22 13:57:43,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.583333333333333) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2021-12-22 13:57:43,541 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 672 transitions. [2021-12-22 13:57:43,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-22 13:57:43,542 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:57:43,543 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 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] [2021-12-22 13:57:43,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 13:57:43,543 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:57:43,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:57:43,543 INFO L85 PathProgramCache]: Analyzing trace with hash -144411713, now seen corresponding path program 1 times [2021-12-22 13:57:43,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:57:43,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213956113] [2021-12-22 13:57:43,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:57:43,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:57:43,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:43,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:57:43,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:43,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:57:43,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:43,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:57:43,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:43,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:57:43,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:43,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:57:43,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:43,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:57:43,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:43,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-22 13:57:43,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:43,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-22 13:57:43,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:43,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-22 13:57:43,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:43,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-22 13:57:43,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:43,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 13:57:43,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:43,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-22 13:57:43,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:43,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-22 13:57:43,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:43,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-22 13:57:43,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:43,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 13:57:43,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:43,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-22 13:57:43,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:43,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-22 13:57:43,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:43,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-22 13:57:43,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:43,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-22 13:57:43,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:43,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 13:57:43,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:43,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-22 13:57:43,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:43,885 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2021-12-22 13:57:43,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:57:43,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213956113] [2021-12-22 13:57:43,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213956113] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:57:43,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:57:43,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-22 13:57:43,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377617602] [2021-12-22 13:57:43,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:57:43,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-22 13:57:43,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:57:43,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-22 13:57:43,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-12-22 13:57:43,886 INFO L87 Difference]: Start difference. First operand 443 states and 672 transitions. Second operand has 16 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 11 states have internal predecessors, (55), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2021-12-22 13:57:44,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:57:44,823 INFO L93 Difference]: Finished difference Result 460 states and 712 transitions. [2021-12-22 13:57:44,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-22 13:57:44,824 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 11 states have internal predecessors, (55), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 145 [2021-12-22 13:57:44,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:57:44,826 INFO L225 Difference]: With dead ends: 460 [2021-12-22 13:57:44,826 INFO L226 Difference]: Without dead ends: 458 [2021-12-22 13:57:44,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=159, Invalid=653, Unknown=0, NotChecked=0, Total=812 [2021-12-22 13:57:44,828 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 241 mSDsluCounter, 1108 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 1377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-22 13:57:44,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 1271 Invalid, 1377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-22 13:57:44,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-12-22 13:57:44,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 435. [2021-12-22 13:57:44,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 255 states have (on average 1.1725490196078432) internal successors, (299), 263 states have internal predecessors, (299), 150 states have call successors, (150), 23 states have call predecessors, (150), 29 states have return successors, (212), 148 states have call predecessors, (212), 149 states have call successors, (212) [2021-12-22 13:57:44,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 661 transitions. [2021-12-22 13:57:44,859 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 661 transitions. Word has length 145 [2021-12-22 13:57:44,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:57:44,860 INFO L470 AbstractCegarLoop]: Abstraction has 435 states and 661 transitions. [2021-12-22 13:57:44,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 11 states have internal predecessors, (55), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2021-12-22 13:57:44,860 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 661 transitions. [2021-12-22 13:57:44,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-22 13:57:44,861 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:57:44,862 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 4, 4, 4, 4, 4, 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] [2021-12-22 13:57:44,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 13:57:44,862 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:57:44,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:57:44,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1764210556, now seen corresponding path program 1 times [2021-12-22 13:57:44,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:57:44,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414372004] [2021-12-22 13:57:44,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:57:44,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:57:44,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:45,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:57:45,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:45,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:57:45,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:45,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:57:45,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:45,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:57:45,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:45,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:57:45,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:45,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:57:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:45,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-22 13:57:45,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:45,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-22 13:57:45,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:45,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-22 13:57:45,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:45,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-22 13:57:45,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:45,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 13:57:45,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:45,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-22 13:57:45,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:45,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 13:57:45,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:45,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-22 13:57:45,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:45,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-22 13:57:45,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:45,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-22 13:57:45,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:45,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-22 13:57:45,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:45,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-22 13:57:45,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:45,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-22 13:57:45,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:45,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-22 13:57:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:45,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-22 13:57:45,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:45,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-22 13:57:45,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:45,794 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2021-12-22 13:57:45,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:57:45,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414372004] [2021-12-22 13:57:45,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414372004] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:57:45,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768690383] [2021-12-22 13:57:45,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:57:45,795 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:57:45,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:57:45,825 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) [2021-12-22 13:57:45,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-22 13:57:46,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:46,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 2825 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-22 13:57:46,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:57:46,561 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-12-22 13:57:46,561 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:57:46,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768690383] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:57:46,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 13:57:46,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [27] total 34 [2021-12-22 13:57:46,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675338394] [2021-12-22 13:57:46,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:57:46,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 13:57:46,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:57:46,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 13:57:46,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1039, Unknown=0, NotChecked=0, Total=1122 [2021-12-22 13:57:46,563 INFO L87 Difference]: Start difference. First operand 435 states and 661 transitions. Second operand has 9 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-22 13:57:46,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:57:46,735 INFO L93 Difference]: Finished difference Result 746 states and 1137 transitions. [2021-12-22 13:57:46,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 13:57:46,736 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 154 [2021-12-22 13:57:46,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:57:46,738 INFO L225 Difference]: With dead ends: 746 [2021-12-22 13:57:46,738 INFO L226 Difference]: Without dead ends: 435 [2021-12-22 13:57:46,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=97, Invalid=1235, Unknown=0, NotChecked=0, Total=1332 [2021-12-22 13:57:46,740 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 12 mSDsluCounter, 1251 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 13:57:46,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1438 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 13:57:46,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2021-12-22 13:57:46,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 435. [2021-12-22 13:57:46,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 255 states have (on average 1.1725490196078432) internal successors, (299), 263 states have internal predecessors, (299), 150 states have call successors, (150), 23 states have call predecessors, (150), 29 states have return successors, (208), 148 states have call predecessors, (208), 149 states have call successors, (208) [2021-12-22 13:57:46,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 657 transitions. [2021-12-22 13:57:46,768 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 657 transitions. Word has length 154 [2021-12-22 13:57:46,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:57:46,769 INFO L470 AbstractCegarLoop]: Abstraction has 435 states and 657 transitions. [2021-12-22 13:57:46,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-22 13:57:46,769 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 657 transitions. [2021-12-22 13:57:46,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-22 13:57:46,770 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:57:46,771 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 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] [2021-12-22 13:57:46,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-22 13:57:46,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:57:46,983 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:57:46,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:57:46,984 INFO L85 PathProgramCache]: Analyzing trace with hash -386866604, now seen corresponding path program 1 times [2021-12-22 13:57:46,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:57:46,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286873696] [2021-12-22 13:57:46,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:57:46,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:57:47,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:47,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:57:47,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:47,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:57:47,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:47,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:57:47,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:47,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:57:47,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:47,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:57:47,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:47,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:57:47,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:47,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-22 13:57:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:47,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-22 13:57:47,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:47,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-22 13:57:47,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:47,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-22 13:57:47,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:47,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 13:57:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:47,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-22 13:57:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:47,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-22 13:57:47,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:47,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-22 13:57:47,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:47,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 13:57:47,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:47,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-22 13:57:47,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:47,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-22 13:57:47,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:47,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-22 13:57:47,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:47,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-22 13:57:47,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:47,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 13:57:47,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:47,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-22 13:57:47,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:47,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-22 13:57:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:47,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 13:57:47,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:47,299 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2021-12-22 13:57:47,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:57:47,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286873696] [2021-12-22 13:57:47,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286873696] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:57:47,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:57:47,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-22 13:57:47,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150297346] [2021-12-22 13:57:47,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:57:47,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-22 13:57:47,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:57:47,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-22 13:57:47,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-22 13:57:47,302 INFO L87 Difference]: Start difference. First operand 435 states and 657 transitions. Second operand has 11 states, 10 states have (on average 5.3) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2021-12-22 13:57:47,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:57:47,820 INFO L93 Difference]: Finished difference Result 451 states and 677 transitions. [2021-12-22 13:57:47,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-22 13:57:47,821 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.3) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) Word has length 153 [2021-12-22 13:57:47,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:57:47,823 INFO L225 Difference]: With dead ends: 451 [2021-12-22 13:57:47,823 INFO L226 Difference]: Without dead ends: 449 [2021-12-22 13:57:47,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-12-22 13:57:47,824 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 151 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 13:57:47,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 890 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 13:57:47,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2021-12-22 13:57:47,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 444. [2021-12-22 13:57:47,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 258 states have (on average 1.1705426356589148) internal successors, (302), 266 states have internal predecessors, (302), 155 states have call successors, (155), 24 states have call predecessors, (155), 30 states have return successors, (213), 153 states have call predecessors, (213), 154 states have call successors, (213) [2021-12-22 13:57:47,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 670 transitions. [2021-12-22 13:57:47,911 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 670 transitions. Word has length 153 [2021-12-22 13:57:47,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:57:47,912 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 670 transitions. [2021-12-22 13:57:47,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.3) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2021-12-22 13:57:47,912 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 670 transitions. [2021-12-22 13:57:47,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-22 13:57:47,914 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:57:47,914 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 4, 4, 4, 4, 4, 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] [2021-12-22 13:57:47,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 13:57:47,914 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:57:47,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:57:47,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1630309929, now seen corresponding path program 1 times [2021-12-22 13:57:47,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:57:47,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630258943] [2021-12-22 13:57:47,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:57:47,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:57:48,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:48,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:57:48,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:48,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:57:48,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:48,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:57:48,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:48,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:57:48,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:48,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:57:48,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:48,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:57:48,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:48,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-22 13:57:48,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:48,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-22 13:57:48,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:48,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-22 13:57:48,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:48,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-22 13:57:48,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:48,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 13:57:48,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:48,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-22 13:57:48,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:48,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 13:57:48,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:48,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-22 13:57:48,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:48,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 13:57:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:48,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-22 13:57:48,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:48,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-22 13:57:48,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:48,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-22 13:57:48,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:48,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 13:57:48,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:48,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-22 13:57:48,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:48,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-22 13:57:48,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:48,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-22 13:57:48,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:48,229 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2021-12-22 13:57:48,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:57:48,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630258943] [2021-12-22 13:57:48,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630258943] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:57:48,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430562781] [2021-12-22 13:57:48,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:57:48,230 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:57:48,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:57:48,231 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) [2021-12-22 13:57:48,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-22 13:57:48,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:48,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 2830 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-22 13:57:48,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:57:48,896 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-12-22 13:57:48,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:57:48,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430562781] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:57:48,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 13:57:48,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2021-12-22 13:57:48,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770503889] [2021-12-22 13:57:48,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:57:48,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 13:57:48,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:57:48,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 13:57:48,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:57:48,898 INFO L87 Difference]: Start difference. First operand 444 states and 670 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-22 13:57:49,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:57:49,047 INFO L93 Difference]: Finished difference Result 823 states and 1278 transitions. [2021-12-22 13:57:49,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 13:57:49,048 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 156 [2021-12-22 13:57:49,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:57:49,050 INFO L225 Difference]: With dead ends: 823 [2021-12-22 13:57:49,050 INFO L226 Difference]: Without dead ends: 444 [2021-12-22 13:57:49,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 196 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-12-22 13:57:49,053 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 15 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 13:57:49,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 696 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 35 Unchecked, 0.1s Time] [2021-12-22 13:57:49,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-12-22 13:57:49,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 444. [2021-12-22 13:57:49,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 258 states have (on average 1.1627906976744187) internal successors, (300), 266 states have internal predecessors, (300), 155 states have call successors, (155), 24 states have call predecessors, (155), 30 states have return successors, (213), 153 states have call predecessors, (213), 154 states have call successors, (213) [2021-12-22 13:57:49,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 668 transitions. [2021-12-22 13:57:49,107 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 668 transitions. Word has length 156 [2021-12-22 13:57:49,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:57:49,108 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 668 transitions. [2021-12-22 13:57:49,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-22 13:57:49,108 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 668 transitions. [2021-12-22 13:57:49,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-22 13:57:49,109 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:57:49,110 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 4, 4, 4, 4, 4, 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] [2021-12-22 13:57:49,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-22 13:57:49,329 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 [2021-12-22 13:57:49,329 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:57:49,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:57:49,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1137683755, now seen corresponding path program 1 times [2021-12-22 13:57:49,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:57:49,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911456865] [2021-12-22 13:57:49,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:57:49,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:57:49,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:49,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:57:49,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:49,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:57:49,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:49,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:57:49,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:49,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:57:49,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:49,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:57:49,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:49,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:57:49,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:49,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-22 13:57:49,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:49,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-22 13:57:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:49,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-22 13:57:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:49,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-22 13:57:49,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:49,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 13:57:49,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:49,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-22 13:57:49,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:49,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 13:57:49,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:50,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-22 13:57:50,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:50,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 13:57:50,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:50,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-22 13:57:50,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:50,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-22 13:57:50,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:50,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-22 13:57:50,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:50,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 13:57:50,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:50,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-22 13:57:50,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:50,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-22 13:57:50,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:50,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-22 13:57:50,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:50,172 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2021-12-22 13:57:50,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:57:50,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911456865] [2021-12-22 13:57:50,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911456865] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:57:50,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174798092] [2021-12-22 13:57:50,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:57:50,173 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:57:50,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:57:50,174 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) [2021-12-22 13:57:50,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-22 13:57:50,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:50,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 2835 conjuncts, 33 conjunts are in the unsatisfiable core [2021-12-22 13:57:50,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:57:51,194 INFO L353 Elim1Store]: treesize reduction 70, result has 26.3 percent of original size [2021-12-22 13:57:51,195 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 39 [2021-12-22 13:57:51,284 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-22 13:57:51,284 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 34 treesize of output 18 [2021-12-22 13:57:51,425 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 160 proven. 12 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-12-22 13:57:51,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 13:57:51,760 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 26 treesize of output 14 [2021-12-22 13:57:51,839 INFO L353 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-12-22 13:57:51,839 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 20 treesize of output 19 [2021-12-22 13:57:51,897 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2021-12-22 13:57:51,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174798092] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 13:57:51,897 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 13:57:51,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 13, 11] total 41 [2021-12-22 13:57:51,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298226663] [2021-12-22 13:57:51,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 13:57:51,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-12-22 13:57:51,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:57:51,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-12-22 13:57:51,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1521, Unknown=0, NotChecked=0, Total=1640 [2021-12-22 13:57:51,899 INFO L87 Difference]: Start difference. First operand 444 states and 668 transitions. Second operand has 41 states, 37 states have (on average 3.675675675675676) internal successors, (136), 36 states have internal predecessors, (136), 16 states have call successors, (56), 9 states have call predecessors, (56), 12 states have return successors, (53), 14 states have call predecessors, (53), 16 states have call successors, (53) [2021-12-22 13:57:57,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:57:57,311 INFO L93 Difference]: Finished difference Result 932 states and 1437 transitions. [2021-12-22 13:57:57,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-12-22 13:57:57,312 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 37 states have (on average 3.675675675675676) internal successors, (136), 36 states have internal predecessors, (136), 16 states have call successors, (56), 9 states have call predecessors, (56), 12 states have return successors, (53), 14 states have call predecessors, (53), 16 states have call successors, (53) Word has length 156 [2021-12-22 13:57:57,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:57:57,316 INFO L225 Difference]: With dead ends: 932 [2021-12-22 13:57:57,316 INFO L226 Difference]: Without dead ends: 647 [2021-12-22 13:57:57,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 331 SyntacticMatches, 10 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1312 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=518, Invalid=5334, Unknown=0, NotChecked=0, Total=5852 [2021-12-22 13:57:57,319 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 438 mSDsluCounter, 1778 mSDsCounter, 0 mSdLazyCounter, 6986 mSolverCounterSat, 555 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 1982 SdHoareTripleChecker+Invalid, 8126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 555 IncrementalHoareTripleChecker+Valid, 6986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 585 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-22 13:57:57,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [480 Valid, 1982 Invalid, 8126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [555 Valid, 6986 Invalid, 0 Unknown, 585 Unchecked, 3.9s Time] [2021-12-22 13:57:57,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2021-12-22 13:57:57,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 533. [2021-12-22 13:57:57,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 309 states have (on average 1.1715210355987056) internal successors, (362), 315 states have internal predecessors, (362), 191 states have call successors, (191), 28 states have call predecessors, (191), 32 states have return successors, (258), 189 states have call predecessors, (258), 190 states have call successors, (258) [2021-12-22 13:57:57,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 811 transitions. [2021-12-22 13:57:57,359 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 811 transitions. Word has length 156 [2021-12-22 13:57:57,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:57:57,359 INFO L470 AbstractCegarLoop]: Abstraction has 533 states and 811 transitions. [2021-12-22 13:57:57,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 37 states have (on average 3.675675675675676) internal successors, (136), 36 states have internal predecessors, (136), 16 states have call successors, (56), 9 states have call predecessors, (56), 12 states have return successors, (53), 14 states have call predecessors, (53), 16 states have call successors, (53) [2021-12-22 13:57:57,360 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 811 transitions. [2021-12-22 13:57:57,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-22 13:57:57,361 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:57:57,362 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 4, 4, 4, 4, 4, 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] [2021-12-22 13:57:57,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-22 13:57:57,575 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 [2021-12-22 13:57:57,575 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:57:57,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:57:57,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1267128233, now seen corresponding path program 2 times [2021-12-22 13:57:57,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:57:57,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154972358] [2021-12-22 13:57:57,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:57:57,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:57:57,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:58,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:57:58,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:58,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:57:58,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:58,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:57:58,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:58,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:57:58,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:58,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:57:58,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:58,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:57:58,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:58,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-22 13:57:58,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:58,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-22 13:57:58,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:58,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-22 13:57:58,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:58,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-22 13:57:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:58,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 13:57:58,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:58,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 13:57:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:58,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-22 13:57:58,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:58,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-22 13:57:58,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:58,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 13:57:58,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:58,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-22 13:57:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:58,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-22 13:57:58,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:58,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-22 13:57:58,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:58,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 13:57:58,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:58,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-22 13:57:58,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:58,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-22 13:57:58,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:58,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-22 13:57:58,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:57:58,409 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2021-12-22 13:57:58,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:57:58,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154972358] [2021-12-22 13:57:58,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154972358] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:57:58,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100438871] [2021-12-22 13:57:58,410 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 13:57:58,410 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:57:58,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:57:58,411 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) [2021-12-22 13:57:58,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-22 13:57:59,323 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-22 13:57:59,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 13:57:59,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 2835 conjuncts, 45 conjunts are in the unsatisfiable core [2021-12-22 13:57:59,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:58:00,444 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 133 proven. 9 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2021-12-22 13:58:00,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 13:58:01,268 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 43 proven. 9 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2021-12-22 13:58:01,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100438871] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 13:58:01,268 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 13:58:01,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 15] total 43 [2021-12-22 13:58:01,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685008417] [2021-12-22 13:58:01,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 13:58:01,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-12-22 13:58:01,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:58:01,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-12-22 13:58:01,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1667, Unknown=0, NotChecked=0, Total=1806 [2021-12-22 13:58:01,270 INFO L87 Difference]: Start difference. First operand 533 states and 811 transitions. Second operand has 43 states, 39 states have (on average 3.4615384615384617) internal successors, (135), 37 states have internal predecessors, (135), 13 states have call successors, (65), 8 states have call predecessors, (65), 8 states have return successors, (59), 10 states have call predecessors, (59), 12 states have call successors, (59) [2021-12-22 13:58:05,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:58:05,119 INFO L93 Difference]: Finished difference Result 842 states and 1269 transitions. [2021-12-22 13:58:05,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-12-22 13:58:05,119 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 39 states have (on average 3.4615384615384617) internal successors, (135), 37 states have internal predecessors, (135), 13 states have call successors, (65), 8 states have call predecessors, (65), 8 states have return successors, (59), 10 states have call predecessors, (59), 12 states have call successors, (59) Word has length 156 [2021-12-22 13:58:05,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:58:05,125 INFO L225 Difference]: With dead ends: 842 [2021-12-22 13:58:05,125 INFO L226 Difference]: Without dead ends: 617 [2021-12-22 13:58:05,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 333 SyntacticMatches, 6 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2363 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=859, Invalid=8453, Unknown=0, NotChecked=0, Total=9312 [2021-12-22 13:58:05,129 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 324 mSDsluCounter, 1834 mSDsCounter, 0 mSdLazyCounter, 3782 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 1971 SdHoareTripleChecker+Invalid, 5616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 3782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1558 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:58:05,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 1971 Invalid, 5616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 3782 Invalid, 0 Unknown, 1558 Unchecked, 2.0s Time] [2021-12-22 13:58:05,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2021-12-22 13:58:05,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 571. [2021-12-22 13:58:05,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 341 states have (on average 1.1730205278592376) internal successors, (400), 347 states have internal predecessors, (400), 193 states have call successors, (193), 32 states have call predecessors, (193), 36 states have return successors, (280), 191 states have call predecessors, (280), 192 states have call successors, (280) [2021-12-22 13:58:05,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 873 transitions. [2021-12-22 13:58:05,168 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 873 transitions. Word has length 156 [2021-12-22 13:58:05,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:58:05,169 INFO L470 AbstractCegarLoop]: Abstraction has 571 states and 873 transitions. [2021-12-22 13:58:05,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 39 states have (on average 3.4615384615384617) internal successors, (135), 37 states have internal predecessors, (135), 13 states have call successors, (65), 8 states have call predecessors, (65), 8 states have return successors, (59), 10 states have call predecessors, (59), 12 states have call successors, (59) [2021-12-22 13:58:05,170 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 873 transitions. [2021-12-22 13:58:05,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-22 13:58:05,171 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:58:05,172 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:58:05,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-22 13:58:05,392 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 [2021-12-22 13:58:05,393 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:58:05,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:58:05,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1021216476, now seen corresponding path program 1 times [2021-12-22 13:58:05,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:58:05,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843089134] [2021-12-22 13:58:05,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:58:05,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:58:05,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:05,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:58:05,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:05,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:58:05,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:05,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:58:05,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:05,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:58:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:05,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:58:05,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:05,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:58:05,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:05,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-22 13:58:05,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:05,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-22 13:58:05,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:05,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-22 13:58:05,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:05,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-22 13:58:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:05,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 13:58:05,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:05,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-22 13:58:05,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:05,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-22 13:58:05,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:05,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-22 13:58:05,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:05,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 13:58:05,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:05,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-22 13:58:05,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:05,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-22 13:58:05,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:05,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-22 13:58:05,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:05,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-22 13:58:05,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:05,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 13:58:05,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:05,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-22 13:58:05,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:05,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-22 13:58:05,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:05,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 13:58:05,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:05,862 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 20 proven. 23 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2021-12-22 13:58:05,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:58:05,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843089134] [2021-12-22 13:58:05,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843089134] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:58:05,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891323781] [2021-12-22 13:58:05,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:58:05,863 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:58:05,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:58:05,876 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) [2021-12-22 13:58:05,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-22 13:58:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:06,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 2798 conjuncts, 52 conjunts are in the unsatisfiable core [2021-12-22 13:58:06,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:58:06,573 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-22 13:58:07,014 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-12-22 13:58:07,016 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 22 treesize of output 14 [2021-12-22 13:58:08,126 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-12-22 13:58:08,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:58:08,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891323781] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:58:08,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 13:58:08,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [16] total 32 [2021-12-22 13:58:08,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134490896] [2021-12-22 13:58:08,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:58:08,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-22 13:58:08,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:58:08,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-22 13:58:08,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2021-12-22 13:58:08,128 INFO L87 Difference]: Start difference. First operand 571 states and 873 transitions. Second operand has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 16 states have internal predecessors, (64), 7 states have call successors, (25), 5 states have call predecessors, (25), 6 states have return successors, (23), 8 states have call predecessors, (23), 6 states have call successors, (23) [2021-12-22 13:58:09,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:58:09,306 INFO L93 Difference]: Finished difference Result 1056 states and 1605 transitions. [2021-12-22 13:58:09,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-22 13:58:09,307 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 16 states have internal predecessors, (64), 7 states have call successors, (25), 5 states have call predecessors, (25), 6 states have return successors, (23), 8 states have call predecessors, (23), 6 states have call successors, (23) Word has length 157 [2021-12-22 13:58:09,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:58:09,324 INFO L225 Difference]: With dead ends: 1056 [2021-12-22 13:58:09,337 INFO L226 Difference]: Without dead ends: 779 [2021-12-22 13:58:09,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 162 SyntacticMatches, 28 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=156, Invalid=1736, Unknown=0, NotChecked=0, Total=1892 [2021-12-22 13:58:09,340 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 217 mSDsluCounter, 1145 mSDsCounter, 0 mSdLazyCounter, 1874 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 3352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 1874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1309 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 13:58:09,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 1330 Invalid, 3352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 1874 Invalid, 0 Unknown, 1309 Unchecked, 0.9s Time] [2021-12-22 13:58:09,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2021-12-22 13:58:09,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 692. [2021-12-22 13:58:09,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 419 states have (on average 1.171837708830549) internal successors, (491), 426 states have internal predecessors, (491), 225 states have call successors, (225), 42 states have call predecessors, (225), 47 states have return successors, (327), 223 states have call predecessors, (327), 224 states have call successors, (327) [2021-12-22 13:58:09,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1043 transitions. [2021-12-22 13:58:09,440 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1043 transitions. Word has length 157 [2021-12-22 13:58:09,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:58:09,440 INFO L470 AbstractCegarLoop]: Abstraction has 692 states and 1043 transitions. [2021-12-22 13:58:09,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 16 states have internal predecessors, (64), 7 states have call successors, (25), 5 states have call predecessors, (25), 6 states have return successors, (23), 8 states have call predecessors, (23), 6 states have call successors, (23) [2021-12-22 13:58:09,440 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1043 transitions. [2021-12-22 13:58:09,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-22 13:58:09,442 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:58:09,443 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:58:09,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-22 13:58:09,663 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 [2021-12-22 13:58:09,664 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:58:09,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:58:09,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1279381914, now seen corresponding path program 1 times [2021-12-22 13:58:09,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:58:09,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121201386] [2021-12-22 13:58:09,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:58:09,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:58:09,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:09,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:58:09,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:09,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:58:09,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:09,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:58:09,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:09,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:58:09,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:09,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:58:09,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:09,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:58:09,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:09,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-22 13:58:09,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:09,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-22 13:58:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:09,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-22 13:58:09,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:09,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-22 13:58:09,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:09,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 13:58:09,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:09,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-22 13:58:09,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:09,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-22 13:58:09,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:09,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-22 13:58:09,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:09,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 13:58:09,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:09,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-22 13:58:09,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:09,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-22 13:58:09,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:09,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-22 13:58:09,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:09,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-22 13:58:09,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:09,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 13:58:09,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:09,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-22 13:58:09,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:58:09,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-22 13:58:09,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat