./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be64_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be64_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 9b90640eabcf61bf9b6c4e01fcd2a39b8b829676407f71504872cd65ce1f895a --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 03:17:52,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 03:17:52,321 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 03:17:52,364 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 03:17:52,365 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 03:17:52,368 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 03:17:52,370 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 03:17:52,372 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 03:17:52,374 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 03:17:52,378 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 03:17:52,379 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 03:17:52,380 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 03:17:52,380 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 03:17:52,383 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 03:17:52,384 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 03:17:52,387 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 03:17:52,388 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 03:17:52,389 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 03:17:52,391 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 03:17:52,396 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 03:17:52,397 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 03:17:52,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 03:17:52,400 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 03:17:52,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 03:17:52,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 03:17:52,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 03:17:52,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 03:17:52,409 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 03:17:52,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 03:17:52,410 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 03:17:52,410 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 03:17:52,411 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 03:17:52,412 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 03:17:52,414 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 03:17:52,415 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 03:17:52,416 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 03:17:52,416 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 03:17:52,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 03:17:52,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 03:17:52,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 03:17:52,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 03:17:52,420 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-16 03:17:52,451 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 03:17:52,451 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 03:17:52,452 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 03:17:52,452 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 03:17:52,453 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 03:17:52,453 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 03:17:52,453 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 03:17:52,454 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 03:17:52,454 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 03:17:52,454 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 03:17:52,455 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 03:17:52,455 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 03:17:52,455 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 03:17:52,455 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 03:17:52,456 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 03:17:52,456 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 03:17:52,456 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 03:17:52,456 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 03:17:52,456 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 03:17:52,457 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 03:17:52,457 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 03:17:52,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:17:52,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 03:17:52,457 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 03:17:52,458 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 03:17:52,458 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 03:17:52,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 03:17:52,458 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 03:17:52,458 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 03:17:52,459 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 03:17:52,459 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 03:17:52,459 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9b90640eabcf61bf9b6c4e01fcd2a39b8b829676407f71504872cd65ce1f895a [2021-12-16 03:17:52,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 03:17:52,720 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 03:17:52,722 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 03:17:52,723 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 03:17:52,724 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 03:17:52,725 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be64_harness.i [2021-12-16 03:17:52,779 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/732643077/747b1642f01f46219cfa427be97e01e6/FLAG3cba7815f [2021-12-16 03:17:53,446 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 03:17:53,447 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be64_harness.i [2021-12-16 03:17:53,488 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/732643077/747b1642f01f46219cfa427be97e01e6/FLAG3cba7815f [2021-12-16 03:17:53,800 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/732643077/747b1642f01f46219cfa427be97e01e6 [2021-12-16 03:17:53,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 03:17:53,803 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 03:17:53,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 03:17:53,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 03:17:53,809 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 03:17:53,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:17:53" (1/1) ... [2021-12-16 03:17:53,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d070e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:17:53, skipping insertion in model container [2021-12-16 03:17:53,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:17:53" (1/1) ... [2021-12-16 03:17:53,815 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 03:17:53,906 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 03:17:54,109 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be64_harness.i[4499,4512] [2021-12-16 03:17:54,123 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be64_harness.i[4559,4572] [2021-12-16 03:17:54,718 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:17:54,721 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:17:54,722 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:17:54,723 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:17:54,725 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:17:54,736 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:17:54,736 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:17:54,738 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:17:54,739 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:17:55,045 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-16 03:17:55,047 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-16 03:17:55,049 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-16 03:17:55,050 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-16 03:17:55,054 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-16 03:17:55,058 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-16 03:17:55,059 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-16 03:17:55,060 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-16 03:17:55,062 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-16 03:17:55,064 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-16 03:17:55,177 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-16 03:17:55,336 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:17:55,336 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:17:55,400 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:17:55,441 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 03:17:55,455 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be64_harness.i[4499,4512] [2021-12-16 03:17:55,456 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be64_harness.i[4559,4572] [2021-12-16 03:17:55,492 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:17:55,497 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:17:55,499 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:17:55,499 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:17:55,500 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:17:55,512 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:17:55,514 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:17:55,515 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:17:55,515 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:17:55,548 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-16 03:17:55,548 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-16 03:17:55,549 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-16 03:17:55,550 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-16 03:17:55,551 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-16 03:17:55,551 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-16 03:17:55,552 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-16 03:17:55,552 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-16 03:17:55,553 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-16 03:17:55,553 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-16 03:17:55,575 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-16 03:17:55,636 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:17:55,636 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:17:55,688 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:17:55,881 INFO L208 MainTranslator]: Completed translation [2021-12-16 03:17:55,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:17:55 WrapperNode [2021-12-16 03:17:55,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 03:17:55,882 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 03:17:55,883 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 03:17:55,883 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 03:17:55,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:17:55" (1/1) ... [2021-12-16 03:17:55,987 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:17:55" (1/1) ... [2021-12-16 03:17:56,076 INFO L137 Inliner]: procedures = 691, calls = 2645, calls flagged for inlining = 61, calls inlined = 11, statements flattened = 975 [2021-12-16 03:17:56,077 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 03:17:56,078 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 03:17:56,078 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 03:17:56,078 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 03:17:56,086 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:17:55" (1/1) ... [2021-12-16 03:17:56,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:17:55" (1/1) ... [2021-12-16 03:17:56,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:17:55" (1/1) ... [2021-12-16 03:17:56,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:17:55" (1/1) ... [2021-12-16 03:17:56,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:17:55" (1/1) ... [2021-12-16 03:17:56,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:17:55" (1/1) ... [2021-12-16 03:17:56,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:17:55" (1/1) ... [2021-12-16 03:17:56,202 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 03:17:56,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 03:17:56,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 03:17:56,206 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 03:17:56,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:17:55" (1/1) ... [2021-12-16 03:17:56,213 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:17:56,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:17:56,241 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) [2021-12-16 03:17:56,264 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 [2021-12-16 03:17:56,286 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_read [2021-12-16 03:17:56,286 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_read [2021-12-16 03:17:56,287 INFO L130 BoogieDeclarations]: Found specification of procedure htonl [2021-12-16 03:17:56,287 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hton64 [2021-12-16 03:17:56,287 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hton64 [2021-12-16 03:17:56,287 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-12-16 03:17:56,288 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-12-16 03:17:56,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 03:17:56,288 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-16 03:17:56,288 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-16 03:17:56,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2021-12-16 03:17:56,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-16 03:17:56,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-16 03:17:56,290 INFO L130 BoogieDeclarations]: Found specification of procedure aws_ntoh64 [2021-12-16 03:17:56,290 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_ntoh64 [2021-12-16 03:17:56,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 03:17:56,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-16 03:17:56,291 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-16 03:17:56,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-16 03:17:56,291 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-16 03:17:56,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 03:17:56,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 03:17:56,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 03:17:56,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 03:17:56,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 03:17:56,293 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-16 03:17:56,293 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-16 03:17:56,293 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-12-16 03:17:56,294 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-12-16 03:17:56,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-16 03:17:56,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-16 03:17:56,294 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-12-16 03:17:56,294 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-12-16 03:17:56,295 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-16 03:17:56,295 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-16 03:17:56,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 03:17:56,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 03:17:56,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-16 03:17:56,295 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-16 03:17:56,295 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-16 03:17:56,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 03:17:56,296 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_big_endian [2021-12-16 03:17:56,296 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_big_endian [2021-12-16 03:17:56,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2021-12-16 03:17:56,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 03:17:56,582 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 03:17:56,583 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 03:17:57,359 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 03:17:57,368 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 03:17:57,368 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-16 03:17:57,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:17:57 BoogieIcfgContainer [2021-12-16 03:17:57,370 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 03:17:57,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 03:17:57,372 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 03:17:57,374 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 03:17:57,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:17:53" (1/3) ... [2021-12-16 03:17:57,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c2dcc77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:17:57, skipping insertion in model container [2021-12-16 03:17:57,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:17:55" (2/3) ... [2021-12-16 03:17:57,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c2dcc77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:17:57, skipping insertion in model container [2021-12-16 03:17:57,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:17:57" (3/3) ... [2021-12-16 03:17:57,377 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_read_be64_harness.i [2021-12-16 03:17:57,381 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 03:17:57,381 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 03:17:57,435 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 03:17:57,440 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 [2021-12-16 03:17:57,440 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 03:17:57,458 INFO L276 IsEmpty]: Start isEmpty. Operand has 169 states, 104 states have (on average 1.2211538461538463) internal successors, (127), 105 states have internal predecessors, (127), 50 states have call successors, (50), 13 states have call predecessors, (50), 13 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2021-12-16 03:17:57,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-16 03:17:57,472 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:17:57,473 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:17:57,474 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:17:57,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:17:57,480 INFO L85 PathProgramCache]: Analyzing trace with hash -2071909208, now seen corresponding path program 1 times [2021-12-16 03:17:57,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:17:57,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047894858] [2021-12-16 03:17:57,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:17:57,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:17:57,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:58,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:17:58,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:58,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:17:58,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:58,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 03:17:58,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:58,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 03:17:58,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:58,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 03:17:58,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:58,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 03:17:58,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:58,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-16 03:17:58,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:58,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 03:17:58,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:58,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 03:17:58,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:58,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-16 03:17:58,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:58,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:17:58,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:58,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:17:58,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:58,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-16 03:17:58,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:58,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-16 03:17:58,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:58,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-16 03:17:58,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:58,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-16 03:17:58,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:58,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-16 03:17:58,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:58,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 03:17:58,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:58,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-16 03:17:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:58,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-16 03:17:58,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:58,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-16 03:17:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:58,390 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2021-12-16 03:17:58,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:17:58,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047894858] [2021-12-16 03:17:58,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047894858] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:17:58,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265996772] [2021-12-16 03:17:58,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:17:58,392 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:17:58,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:17:58,394 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) [2021-12-16 03:17:58,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 03:17:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:17:58,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 2782 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 03:17:58,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:17:59,318 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2021-12-16 03:17:59,319 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:17:59,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265996772] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:17:59,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:17:59,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2021-12-16 03:17:59,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61858919] [2021-12-16 03:17:59,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:17:59,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 03:17:59,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:17:59,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 03:17:59,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:17:59,349 INFO L87 Difference]: Start difference. First operand has 169 states, 104 states have (on average 1.2211538461538463) internal successors, (127), 105 states have internal predecessors, (127), 50 states have call successors, (50), 13 states have call predecessors, (50), 13 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-16 03:17:59,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:17:59,643 INFO L93 Difference]: Finished difference Result 334 states and 486 transitions. [2021-12-16 03:17:59,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 03:17:59,646 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 135 [2021-12-16 03:17:59,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:17:59,655 INFO L225 Difference]: With dead ends: 334 [2021-12-16 03:17:59,655 INFO L226 Difference]: Without dead ends: 166 [2021-12-16 03:17:59,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-12-16 03:17:59,662 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 247 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 03:17:59,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 473 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 03:17:59,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-12-16 03:17:59,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-12-16 03:17:59,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 101 states have (on average 1.2079207920792079) internal successors, (122), 103 states have internal predecessors, (122), 50 states have call successors, (50), 13 states have call predecessors, (50), 14 states have return successors, (57), 49 states have call predecessors, (57), 49 states have call successors, (57) [2021-12-16 03:17:59,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 229 transitions. [2021-12-16 03:17:59,712 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 229 transitions. Word has length 135 [2021-12-16 03:17:59,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:17:59,712 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 229 transitions. [2021-12-16 03:17:59,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-16 03:17:59,713 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 229 transitions. [2021-12-16 03:17:59,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-16 03:17:59,717 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:17:59,717 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:17:59,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-16 03:17:59,931 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 [2021-12-16 03:17:59,932 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:17:59,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:17:59,932 INFO L85 PathProgramCache]: Analyzing trace with hash 2052663395, now seen corresponding path program 1 times [2021-12-16 03:17:59,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:17:59,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152341005] [2021-12-16 03:17:59,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:17:59,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:18:00,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:00,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:18:00,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:00,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:18:00,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:00,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 03:18:00,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:00,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 03:18:00,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:00,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-16 03:18:00,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:00,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 03:18:00,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:00,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 03:18:00,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:00,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:18:00,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:00,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-16 03:18:00,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:00,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-16 03:18:00,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:00,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:18:00,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:00,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:18:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:00,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-16 03:18:00,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:00,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 03:18:00,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:00,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-16 03:18:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:00,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-16 03:18:00,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:00,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-16 03:18:00,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:00,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-16 03:18:00,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:00,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-16 03:18:00,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:00,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-16 03:18:00,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:00,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-16 03:18:00,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:00,344 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2021-12-16 03:18:00,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:18:00,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152341005] [2021-12-16 03:18:00,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152341005] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:18:00,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58702938] [2021-12-16 03:18:00,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:18:00,345 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:18:00,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:18:00,346 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) [2021-12-16 03:18:00,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 03:18:00,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:00,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 2787 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-16 03:18:00,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:18:01,232 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-12-16 03:18:01,233 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:18:01,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58702938] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:18:01,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:18:01,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-12-16 03:18:01,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089565510] [2021-12-16 03:18:01,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:18:01,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 03:18:01,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:18:01,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 03:18:01,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-12-16 03:18:01,236 INFO L87 Difference]: Start difference. First operand 166 states and 229 transitions. Second operand has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 7 states have internal predecessors, (62), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2021-12-16 03:18:01,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:18:01,551 INFO L93 Difference]: Finished difference Result 288 states and 398 transitions. [2021-12-16 03:18:01,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:18:01,555 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 7 states have internal predecessors, (62), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) Word has length 137 [2021-12-16 03:18:01,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:18:01,557 INFO L225 Difference]: With dead ends: 288 [2021-12-16 03:18:01,557 INFO L226 Difference]: Without dead ends: 166 [2021-12-16 03:18:01,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2021-12-16 03:18:01,559 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 260 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 03:18:01,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 756 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 03:18:01,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-12-16 03:18:01,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-12-16 03:18:01,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 101 states have (on average 1.2079207920792079) internal successors, (122), 103 states have internal predecessors, (122), 50 states have call successors, (50), 13 states have call predecessors, (50), 14 states have return successors, (55), 49 states have call predecessors, (55), 49 states have call successors, (55) [2021-12-16 03:18:01,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 227 transitions. [2021-12-16 03:18:01,586 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 227 transitions. Word has length 137 [2021-12-16 03:18:01,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:18:01,586 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 227 transitions. [2021-12-16 03:18:01,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 7 states have internal predecessors, (62), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2021-12-16 03:18:01,587 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 227 transitions. [2021-12-16 03:18:01,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-16 03:18:01,589 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:18:01,589 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:18:01,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-16 03:18:01,802 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 [2021-12-16 03:18:01,803 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:18:01,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:18:01,803 INFO L85 PathProgramCache]: Analyzing trace with hash 702875934, now seen corresponding path program 2 times [2021-12-16 03:18:01,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:18:01,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511485869] [2021-12-16 03:18:01,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:18:01,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:18:01,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:02,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:18:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:02,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:18:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:02,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 03:18:02,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:02,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 03:18:02,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:02,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-16 03:18:02,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:02,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 03:18:02,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:02,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 03:18:02,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:02,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:18:02,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:02,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-16 03:18:02,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:02,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-16 03:18:02,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:02,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:18:02,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:02,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:18:02,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:02,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-16 03:18:02,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:02,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-16 03:18:02,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:02,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 03:18:02,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:02,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-16 03:18:02,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:02,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-16 03:18:02,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:02,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 03:18:02,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:02,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-16 03:18:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:02,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-16 03:18:02,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:02,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-16 03:18:02,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:02,244 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2021-12-16 03:18:02,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:18:02,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511485869] [2021-12-16 03:18:02,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511485869] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:18:02,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532982409] [2021-12-16 03:18:02,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 03:18:02,245 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:18:02,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:18:02,246 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) [2021-12-16 03:18:02,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-16 03:18:02,807 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 03:18:02,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 03:18:02,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 2792 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-16 03:18:02,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:18:03,088 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-12-16 03:18:03,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:18:03,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532982409] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:18:03,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:18:03,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 10 [2021-12-16 03:18:03,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137164851] [2021-12-16 03:18:03,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:18:03,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 03:18:03,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:18:03,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 03:18:03,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-16 03:18:03,091 INFO L87 Difference]: Start difference. First operand 166 states and 227 transitions. Second operand has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 5 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) [2021-12-16 03:18:03,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:18:03,260 INFO L93 Difference]: Finished difference Result 282 states and 385 transitions. [2021-12-16 03:18:03,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 03:18:03,261 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 5 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) Word has length 139 [2021-12-16 03:18:03,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:18:03,263 INFO L225 Difference]: With dead ends: 282 [2021-12-16 03:18:03,263 INFO L226 Difference]: Without dead ends: 166 [2021-12-16 03:18:03,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-12-16 03:18:03,265 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 105 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:18:03,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 1226 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:18:03,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-12-16 03:18:03,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-12-16 03:18:03,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 101 states have (on average 1.2079207920792079) internal successors, (122), 103 states have internal predecessors, (122), 50 states have call successors, (50), 13 states have call predecessors, (50), 14 states have return successors, (52), 49 states have call predecessors, (52), 49 states have call successors, (52) [2021-12-16 03:18:03,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 224 transitions. [2021-12-16 03:18:03,280 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 224 transitions. Word has length 139 [2021-12-16 03:18:03,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:18:03,280 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 224 transitions. [2021-12-16 03:18:03,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 5 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) [2021-12-16 03:18:03,281 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 224 transitions. [2021-12-16 03:18:03,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-16 03:18:03,283 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:18:03,283 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:18:03,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-16 03:18:03,511 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 [2021-12-16 03:18:03,512 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:18:03,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:18:03,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1036609347, now seen corresponding path program 3 times [2021-12-16 03:18:03,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:18:03,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529064295] [2021-12-16 03:18:03,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:18:03,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:18:03,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:03,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:18:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:03,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:18:03,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:03,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 03:18:03,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:03,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 03:18:03,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:03,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-16 03:18:03,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:03,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 03:18:03,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:03,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 03:18:03,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:03,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:18:03,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:03,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-16 03:18:03,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:03,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-16 03:18:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:03,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:18:03,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:03,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:18:03,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:03,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-16 03:18:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:03,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-16 03:18:03,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:03,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 03:18:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:03,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-16 03:18:03,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:03,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 03:18:03,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:03,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-16 03:18:03,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:03,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-16 03:18:03,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:03,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-16 03:18:03,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:03,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 03:18:03,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:03,966 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-12-16 03:18:03,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:18:03,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529064295] [2021-12-16 03:18:03,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529064295] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:18:03,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055387978] [2021-12-16 03:18:03,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-16 03:18:03,967 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:18:03,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:18:03,972 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) [2021-12-16 03:18:03,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-16 03:18:04,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-16 03:18:04,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 03:18:04,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 2408 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-16 03:18:04,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:18:04,748 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-12-16 03:18:04,748 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:18:04,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055387978] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:18:04,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:18:04,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2021-12-16 03:18:04,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048996252] [2021-12-16 03:18:04,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:18:04,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 03:18:04,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:18:04,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 03:18:04,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-12-16 03:18:04,750 INFO L87 Difference]: Start difference. First operand 166 states and 224 transitions. Second operand has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-16 03:18:04,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:18:04,861 INFO L93 Difference]: Finished difference Result 277 states and 371 transitions. [2021-12-16 03:18:04,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:18:04,862 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 141 [2021-12-16 03:18:04,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:18:04,864 INFO L225 Difference]: With dead ends: 277 [2021-12-16 03:18:04,864 INFO L226 Difference]: Without dead ends: 166 [2021-12-16 03:18:04,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2021-12-16 03:18:04,866 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 2 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:18:04,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1196 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:18:04,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-12-16 03:18:04,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-12-16 03:18:04,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 101 states have (on average 1.2079207920792079) internal successors, (122), 103 states have internal predecessors, (122), 50 states have call successors, (50), 13 states have call predecessors, (50), 14 states have return successors, (51), 49 states have call predecessors, (51), 49 states have call successors, (51) [2021-12-16 03:18:04,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 223 transitions. [2021-12-16 03:18:04,880 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 223 transitions. Word has length 141 [2021-12-16 03:18:04,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:18:04,880 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 223 transitions. [2021-12-16 03:18:04,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-16 03:18:04,881 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 223 transitions. [2021-12-16 03:18:04,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-16 03:18:04,883 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:18:04,883 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:18:04,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-16 03:18:05,098 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 [2021-12-16 03:18:05,099 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:18:05,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:18:05,099 INFO L85 PathProgramCache]: Analyzing trace with hash 197461288, now seen corresponding path program 4 times [2021-12-16 03:18:05,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:18:05,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037347368] [2021-12-16 03:18:05,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:18:05,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:18:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:05,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:18:05,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:05,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:18:05,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:05,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 03:18:05,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:05,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 03:18:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:05,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-16 03:18:05,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:05,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 03:18:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:05,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 03:18:05,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:05,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:18:05,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:05,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-16 03:18:05,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:05,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-16 03:18:05,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:05,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:18:05,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:05,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:18:05,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:05,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-16 03:18:05,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:05,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-16 03:18:05,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:05,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 03:18:05,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:05,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-16 03:18:05,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:05,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 03:18:05,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:05,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-16 03:18:05,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:05,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-16 03:18:05,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:05,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-16 03:18:05,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:05,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-16 03:18:05,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:05,520 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2021-12-16 03:18:05,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:18:05,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037347368] [2021-12-16 03:18:05,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037347368] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:18:05,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:18:05,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:18:05,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027960729] [2021-12-16 03:18:05,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:18:05,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:18:05,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:18:05,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:18:05,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:18:05,523 INFO L87 Difference]: Start difference. First operand 166 states and 223 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 8 states have internal predecessors, (55), 6 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) [2021-12-16 03:18:06,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:18:06,690 INFO L93 Difference]: Finished difference Result 278 states and 369 transitions. [2021-12-16 03:18:06,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-16 03:18:06,691 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 8 states have internal predecessors, (55), 6 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) Word has length 143 [2021-12-16 03:18:06,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:18:06,693 INFO L225 Difference]: With dead ends: 278 [2021-12-16 03:18:06,693 INFO L226 Difference]: Without dead ends: 173 [2021-12-16 03:18:06,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-12-16 03:18:06,695 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 230 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:18:06,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 987 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 03:18:06,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-12-16 03:18:06,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 166. [2021-12-16 03:18:06,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 101 states have (on average 1.2079207920792079) internal successors, (122), 103 states have internal predecessors, (122), 50 states have call successors, (50), 13 states have call predecessors, (50), 14 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2021-12-16 03:18:06,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 222 transitions. [2021-12-16 03:18:06,707 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 222 transitions. Word has length 143 [2021-12-16 03:18:06,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:18:06,708 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 222 transitions. [2021-12-16 03:18:06,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 8 states have internal predecessors, (55), 6 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) [2021-12-16 03:18:06,708 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 222 transitions. [2021-12-16 03:18:06,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-16 03:18:06,710 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:18:06,710 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:18:06,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 03:18:06,711 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:18:06,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:18:06,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1175651149, now seen corresponding path program 1 times [2021-12-16 03:18:06,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:18:06,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983843137] [2021-12-16 03:18:06,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:18:06,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:18:06,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:07,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:18:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:07,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:18:07,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:07,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 03:18:07,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:07,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 03:18:07,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:07,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-16 03:18:07,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:07,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 03:18:07,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:07,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 03:18:07,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:07,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:18:07,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:07,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-16 03:18:07,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:07,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-16 03:18:07,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:07,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:18:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:07,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:18:07,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:07,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-16 03:18:07,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:07,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-16 03:18:07,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:07,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 03:18:07,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:07,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-16 03:18:07,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:07,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 03:18:07,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:07,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-16 03:18:07,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:07,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-16 03:18:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:07,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-16 03:18:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:07,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-16 03:18:07,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:07,243 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2021-12-16 03:18:07,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:18:07,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983843137] [2021-12-16 03:18:07,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983843137] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:18:07,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:18:07,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-16 03:18:07,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068898979] [2021-12-16 03:18:07,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:18:07,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 03:18:07,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:18:07,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 03:18:07,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-16 03:18:07,248 INFO L87 Difference]: Start difference. First operand 166 states and 222 transitions. Second operand has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2021-12-16 03:18:08,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:18:08,302 INFO L93 Difference]: Finished difference Result 185 states and 253 transitions. [2021-12-16 03:18:08,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 03:18:08,303 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (23), 4 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 [2021-12-16 03:18:08,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:18:08,305 INFO L225 Difference]: With dead ends: 185 [2021-12-16 03:18:08,305 INFO L226 Difference]: Without dead ends: 183 [2021-12-16 03:18:08,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-12-16 03:18:08,306 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 138 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1119 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 03:18:08,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 1119 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-16 03:18:08,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-12-16 03:18:08,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 175. [2021-12-16 03:18:08,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 107 states have (on average 1.1962616822429906) internal successors, (128), 110 states have internal predecessors, (128), 51 states have call successors, (51), 14 states have call predecessors, (51), 16 states have return successors, (61), 50 states have call predecessors, (61), 50 states have call successors, (61) [2021-12-16 03:18:08,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 240 transitions. [2021-12-16 03:18:08,318 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 240 transitions. Word has length 145 [2021-12-16 03:18:08,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:18:08,318 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 240 transitions. [2021-12-16 03:18:08,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2021-12-16 03:18:08,319 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 240 transitions. [2021-12-16 03:18:08,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-16 03:18:08,320 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:18:08,320 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:18:08,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 03:18:08,321 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:18:08,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:18:08,321 INFO L85 PathProgramCache]: Analyzing trace with hash -174149227, now seen corresponding path program 1 times [2021-12-16 03:18:08,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:18:08,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536535102] [2021-12-16 03:18:08,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:18:08,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:18:08,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:08,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:18:08,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:08,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:18:08,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:08,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 03:18:08,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:08,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 03:18:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:08,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-16 03:18:08,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:08,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 03:18:08,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:08,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 03:18:08,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:08,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:18:08,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:08,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-16 03:18:08,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:08,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-16 03:18:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:08,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:18:08,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:08,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:18:08,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:08,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-16 03:18:08,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:08,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-16 03:18:08,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:08,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 03:18:08,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:08,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-16 03:18:08,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:08,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 03:18:08,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:08,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-16 03:18:08,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:08,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-16 03:18:08,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:08,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-16 03:18:08,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:08,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-16 03:18:08,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:08,837 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-12-16 03:18:08,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:18:08,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536535102] [2021-12-16 03:18:08,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536535102] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:18:08,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414469313] [2021-12-16 03:18:08,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:18:08,839 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:18:08,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:18:08,844 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) [2021-12-16 03:18:08,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-16 03:18:09,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:09,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 2819 conjuncts, 129 conjunts are in the unsatisfiable core [2021-12-16 03:18:09,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:18:09,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 03:18:09,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 03:18:10,369 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-12-16 03:18:10,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 26 [2021-12-16 03:18:10,470 INFO L354 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2021-12-16 03:18:10,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 22 [2021-12-16 03:18:10,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2021-12-16 03:18:10,889 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-12-16 03:18:10,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 10 [2021-12-16 03:18:11,493 INFO L354 Elim1Store]: treesize reduction 70, result has 28.6 percent of original size [2021-12-16 03:18:11,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 27 treesize of output 45 [2021-12-16 03:18:11,635 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-16 03:18:11,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 20 [2021-12-16 03:18:13,664 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-12-16 03:18:13,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2021-12-16 03:18:14,289 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-12-16 03:18:14,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-12-16 03:18:14,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-16 03:18:14,699 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 86 proven. 46 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-12-16 03:18:14,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:18:14,955 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_594 (Array Int Int))) (= 0 (mod (select (select (store |c_#memory_int| |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~#rv~7#1.base| v_ArrVal_594) |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~cursor#1.base|) |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~cursor#1.offset|) 18446744073709551616))) is different from false [2021-12-16 03:18:15,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414469313] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:18:15,033 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 03:18:15,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 36] total 45 [2021-12-16 03:18:15,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331552913] [2021-12-16 03:18:15,033 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 03:18:15,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-12-16 03:18:15,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:18:15,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-12-16 03:18:15,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=2236, Unknown=1, NotChecked=96, Total=2550 [2021-12-16 03:18:15,036 INFO L87 Difference]: Start difference. First operand 175 states and 240 transitions. Second operand has 45 states, 40 states have (on average 3.275) internal successors, (131), 37 states have internal predecessors, (131), 16 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (42), 14 states have call predecessors, (42), 16 states have call successors, (42) [2021-12-16 03:18:18,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:18:18,878 INFO L93 Difference]: Finished difference Result 358 states and 489 transitions. [2021-12-16 03:18:18,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-16 03:18:18,879 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 40 states have (on average 3.275) internal successors, (131), 37 states have internal predecessors, (131), 16 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (42), 14 states have call predecessors, (42), 16 states have call successors, (42) Word has length 149 [2021-12-16 03:18:18,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:18:18,881 INFO L225 Difference]: With dead ends: 358 [2021-12-16 03:18:18,881 INFO L226 Difference]: Without dead ends: 196 [2021-12-16 03:18:18,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 147 SyntacticMatches, 26 SemanticMatches, 62 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1624 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=343, Invalid=3565, Unknown=2, NotChecked=122, Total=4032 [2021-12-16 03:18:18,884 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 209 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 2789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1506 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-16 03:18:18,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 1248 Invalid, 2789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 1076 Invalid, 0 Unknown, 1506 Unchecked, 1.3s Time] [2021-12-16 03:18:18,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-12-16 03:18:18,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 190. [2021-12-16 03:18:18,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 118 states have (on average 1.1864406779661016) internal successors, (140), 121 states have internal predecessors, (140), 53 states have call successors, (53), 16 states have call predecessors, (53), 18 states have return successors, (63), 52 states have call predecessors, (63), 52 states have call successors, (63) [2021-12-16 03:18:18,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 256 transitions. [2021-12-16 03:18:18,898 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 256 transitions. Word has length 149 [2021-12-16 03:18:18,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:18:18,899 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 256 transitions. [2021-12-16 03:18:18,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 40 states have (on average 3.275) internal successors, (131), 37 states have internal predecessors, (131), 16 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (42), 14 states have call predecessors, (42), 16 states have call successors, (42) [2021-12-16 03:18:18,899 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 256 transitions. [2021-12-16 03:18:18,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-16 03:18:18,901 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:18:18,901 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:18:18,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-16 03:18:19,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:18:19,128 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:18:19,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:18:19,128 INFO L85 PathProgramCache]: Analyzing trace with hash 99252429, now seen corresponding path program 2 times [2021-12-16 03:18:19,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:18:19,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625390313] [2021-12-16 03:18:19,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:18:19,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:18:19,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:19,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:18:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:19,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:18:19,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:19,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 03:18:19,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:19,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 03:18:19,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:19,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 03:18:19,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:19,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-16 03:18:19,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:19,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-16 03:18:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:19,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-16 03:18:19,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:19,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-16 03:18:19,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:19,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-16 03:18:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:19,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:18:19,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:19,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:18:19,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:19,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-16 03:18:19,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:19,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-16 03:18:19,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:19,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-16 03:18:19,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:19,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-16 03:18:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:19,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 03:18:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:19,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-16 03:18:19,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:19,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-16 03:18:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:19,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-16 03:18:19,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:19,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-16 03:18:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:19,724 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2021-12-16 03:18:19,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:18:19,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625390313] [2021-12-16 03:18:19,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625390313] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:18:19,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623251906] [2021-12-16 03:18:19,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 03:18:19,725 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:18:19,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:18:19,728 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) [2021-12-16 03:18:19,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-16 03:18:20,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 03:18:20,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 03:18:20,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 2831 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-16 03:18:20,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:18:20,807 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2021-12-16 03:18:20,807 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:18:20,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623251906] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:18:20,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:18:20,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 19 [2021-12-16 03:18:20,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751060338] [2021-12-16 03:18:20,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:18:20,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 03:18:20,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:18:20,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 03:18:20,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2021-12-16 03:18:20,809 INFO L87 Difference]: Start difference. First operand 190 states and 256 transitions. Second operand has 9 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-16 03:18:20,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:18:20,972 INFO L93 Difference]: Finished difference Result 343 states and 477 transitions. [2021-12-16 03:18:20,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 03:18:20,972 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 153 [2021-12-16 03:18:20,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:18:20,974 INFO L225 Difference]: With dead ends: 343 [2021-12-16 03:18:20,975 INFO L226 Difference]: Without dead ends: 195 [2021-12-16 03:18:20,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 187 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2021-12-16 03:18:20,977 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 12 mSDsluCounter, 1430 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1641 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:18:20,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1641 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:18:20,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-12-16 03:18:20,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2021-12-16 03:18:20,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 122 states have (on average 1.180327868852459) internal successors, (144), 126 states have internal predecessors, (144), 53 states have call successors, (53), 16 states have call predecessors, (53), 19 states have return successors, (72), 52 states have call predecessors, (72), 52 states have call successors, (72) [2021-12-16 03:18:20,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 269 transitions. [2021-12-16 03:18:20,991 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 269 transitions. Word has length 153 [2021-12-16 03:18:20,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:18:20,991 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 269 transitions. [2021-12-16 03:18:20,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-16 03:18:20,991 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 269 transitions. [2021-12-16 03:18:20,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-16 03:18:20,993 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:18:20,993 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:18:21,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-16 03:18:21,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:18:21,220 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:18:21,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:18:21,220 INFO L85 PathProgramCache]: Analyzing trace with hash -2071266904, now seen corresponding path program 1 times [2021-12-16 03:18:21,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:18:21,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475005636] [2021-12-16 03:18:21,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:18:21,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:18:21,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:21,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:18:21,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:21,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:18:21,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:21,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 03:18:21,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:21,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 03:18:21,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:21,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 03:18:21,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:21,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 03:18:21,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:21,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-16 03:18:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:21,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 03:18:21,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:21,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-16 03:18:21,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:21,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-16 03:18:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:21,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:18:21,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:21,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:18:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:21,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 03:18:21,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:21,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 03:18:21,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:21,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 03:18:21,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:21,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-16 03:18:21,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:21,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-16 03:18:21,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:21,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-16 03:18:21,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:21,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-16 03:18:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:21,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 03:18:21,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:21,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-16 03:18:21,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:21,713 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2021-12-16 03:18:21,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:18:21,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475005636] [2021-12-16 03:18:21,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475005636] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:18:21,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523524214] [2021-12-16 03:18:21,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:18:21,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:18:21,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:18:21,716 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) [2021-12-16 03:18:21,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-16 03:18:22,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:22,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 2836 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-16 03:18:22,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:18:22,550 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2021-12-16 03:18:22,550 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:18:22,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523524214] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:18:22,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:18:22,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2021-12-16 03:18:22,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239051622] [2021-12-16 03:18:22,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:18:22,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:18:22,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:18:22,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:18:22,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-12-16 03:18:22,552 INFO L87 Difference]: Start difference. First operand 195 states and 269 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-16 03:18:22,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:18:22,870 INFO L93 Difference]: Finished difference Result 348 states and 500 transitions. [2021-12-16 03:18:22,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 03:18:22,871 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 155 [2021-12-16 03:18:22,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:18:22,873 INFO L225 Difference]: With dead ends: 348 [2021-12-16 03:18:22,873 INFO L226 Difference]: Without dead ends: 195 [2021-12-16 03:18:22,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-12-16 03:18:22,877 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 17 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 03:18:22,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 756 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 48 Unchecked, 0.2s Time] [2021-12-16 03:18:22,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-12-16 03:18:22,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2021-12-16 03:18:22,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 122 states have (on average 1.1721311475409837) internal successors, (143), 126 states have internal predecessors, (143), 53 states have call successors, (53), 16 states have call predecessors, (53), 19 states have return successors, (72), 52 states have call predecessors, (72), 52 states have call successors, (72) [2021-12-16 03:18:22,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 268 transitions. [2021-12-16 03:18:22,891 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 268 transitions. Word has length 155 [2021-12-16 03:18:22,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:18:22,892 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 268 transitions. [2021-12-16 03:18:22,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-16 03:18:22,892 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 268 transitions. [2021-12-16 03:18:22,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-16 03:18:22,894 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:18:22,894 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:18:22,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-16 03:18:23,115 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 [2021-12-16 03:18:23,116 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:18:23,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:18:23,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1638928742, now seen corresponding path program 1 times [2021-12-16 03:18:23,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:18:23,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836792689] [2021-12-16 03:18:23,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:18:23,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:18:23,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:23,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:18:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:23,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:18:23,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:23,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 03:18:23,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:23,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 03:18:23,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:23,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 03:18:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:23,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 03:18:23,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:23,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-16 03:18:23,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:23,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 03:18:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:23,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-16 03:18:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:23,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-16 03:18:23,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:23,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:18:23,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:23,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:18:23,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:23,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 03:18:23,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:23,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 03:18:23,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:23,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 03:18:23,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:23,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-16 03:18:23,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:23,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-16 03:18:23,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:23,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-16 03:18:23,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:23,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-16 03:18:23,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:23,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 03:18:23,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:23,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-16 03:18:23,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:23,470 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2021-12-16 03:18:23,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:18:23,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836792689] [2021-12-16 03:18:23,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836792689] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:18:23,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:18:23,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 03:18:23,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601367069] [2021-12-16 03:18:23,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:18:23,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 03:18:23,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:18:23,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 03:18:23,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:18:23,474 INFO L87 Difference]: Start difference. First operand 195 states and 268 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-16 03:18:24,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:18:24,194 INFO L93 Difference]: Finished difference Result 342 states and 478 transitions. [2021-12-16 03:18:24,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 03:18:24,194 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 155 [2021-12-16 03:18:24,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:18:24,196 INFO L225 Difference]: With dead ends: 342 [2021-12-16 03:18:24,196 INFO L226 Difference]: Without dead ends: 202 [2021-12-16 03:18:24,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-12-16 03:18:24,197 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 121 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-16 03:18:24,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 550 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-16 03:18:24,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-12-16 03:18:24,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 199. [2021-12-16 03:18:24,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 125 states have (on average 1.184) internal successors, (148), 130 states have internal predecessors, (148), 53 states have call successors, (53), 16 states have call predecessors, (53), 20 states have return successors, (73), 52 states have call predecessors, (73), 52 states have call successors, (73) [2021-12-16 03:18:24,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 274 transitions. [2021-12-16 03:18:24,213 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 274 transitions. Word has length 155 [2021-12-16 03:18:24,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:18:24,213 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 274 transitions. [2021-12-16 03:18:24,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-16 03:18:24,213 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 274 transitions. [2021-12-16 03:18:24,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-16 03:18:24,215 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:18:24,215 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:18:24,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 03:18:24,216 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:18:24,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:18:24,216 INFO L85 PathProgramCache]: Analyzing trace with hash -899332851, now seen corresponding path program 1 times [2021-12-16 03:18:24,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:18:24,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685909782] [2021-12-16 03:18:24,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:18:24,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:18:24,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:24,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:18:24,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:24,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:18:24,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:24,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 03:18:24,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:24,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 03:18:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:24,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 03:18:24,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:24,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 03:18:24,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:24,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-16 03:18:24,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:24,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 03:18:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:24,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-16 03:18:24,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:24,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-16 03:18:24,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:24,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:18:24,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:24,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:18:24,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:24,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-16 03:18:24,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:24,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-16 03:18:24,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:24,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-16 03:18:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:24,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-16 03:18:24,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:24,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-16 03:18:24,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:24,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-16 03:18:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:24,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-16 03:18:24,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:24,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-16 03:18:24,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:24,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-16 03:18:24,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:24,670 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2021-12-16 03:18:24,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:18:24,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685909782] [2021-12-16 03:18:24,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685909782] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:18:24,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799239217] [2021-12-16 03:18:24,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:18:24,672 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:18:24,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:18:24,673 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) [2021-12-16 03:18:24,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-16 03:18:25,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:25,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 2975 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 03:18:25,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:18:25,550 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 112 proven. 1 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-12-16 03:18:25,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:18:25,831 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2021-12-16 03:18:25,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799239217] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-16 03:18:25,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-16 03:18:25,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 5] total 10 [2021-12-16 03:18:25,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812883794] [2021-12-16 03:18:25,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:18:25,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 03:18:25,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:18:25,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 03:18:25,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-16 03:18:25,834 INFO L87 Difference]: Start difference. First operand 199 states and 274 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-16 03:18:25,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:18:25,967 INFO L93 Difference]: Finished difference Result 350 states and 492 transitions. [2021-12-16 03:18:25,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 03:18:25,968 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 156 [2021-12-16 03:18:25,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:18:25,970 INFO L225 Difference]: With dead ends: 350 [2021-12-16 03:18:25,970 INFO L226 Difference]: Without dead ends: 205 [2021-12-16 03:18:25,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 347 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-16 03:18:25,972 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 5 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:18:25,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 635 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:18:25,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-12-16 03:18:25,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 202. [2021-12-16 03:18:25,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 128 states have (on average 1.1796875) internal successors, (151), 132 states have internal predecessors, (151), 53 states have call successors, (53), 17 states have call predecessors, (53), 20 states have return successors, (73), 52 states have call predecessors, (73), 52 states have call successors, (73) [2021-12-16 03:18:25,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 277 transitions. [2021-12-16 03:18:25,983 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 277 transitions. Word has length 156 [2021-12-16 03:18:25,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:18:25,984 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 277 transitions. [2021-12-16 03:18:25,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-16 03:18:25,984 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 277 transitions. [2021-12-16 03:18:25,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-16 03:18:25,985 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:18:25,986 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:18:26,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-16 03:18:26,203 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 [2021-12-16 03:18:26,204 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:18:26,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:18:26,204 INFO L85 PathProgramCache]: Analyzing trace with hash 132371780, now seen corresponding path program 1 times [2021-12-16 03:18:26,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:18:26,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253292875] [2021-12-16 03:18:26,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:18:26,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:18:26,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:26,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:18:26,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:26,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:18:26,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:26,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 03:18:26,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:26,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 03:18:26,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:26,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 03:18:26,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:26,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 03:18:26,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:26,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-16 03:18:26,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:26,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 03:18:26,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:26,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-16 03:18:26,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:26,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-16 03:18:26,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:26,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:18:26,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:26,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:18:26,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:26,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-16 03:18:26,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:26,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-16 03:18:26,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:26,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 03:18:26,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:26,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 03:18:26,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:26,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-16 03:18:26,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:26,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-16 03:18:26,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:26,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-16 03:18:26,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:26,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-16 03:18:26,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:26,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 03:18:26,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:26,669 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-12-16 03:18:26,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:18:26,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253292875] [2021-12-16 03:18:26,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253292875] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:18:26,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912649262] [2021-12-16 03:18:26,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:18:26,670 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:18:26,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:18:26,671 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) [2021-12-16 03:18:26,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-16 03:18:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:27,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 2998 conjuncts, 41 conjunts are in the unsatisfiable core [2021-12-16 03:18:27,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:18:27,609 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-12-16 03:18:27,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:18:27,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912649262] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:18:27,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:18:27,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2021-12-16 03:18:27,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96503427] [2021-12-16 03:18:27,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:18:27,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 03:18:27,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:18:27,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 03:18:27,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-12-16 03:18:27,611 INFO L87 Difference]: Start difference. First operand 202 states and 277 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-16 03:18:27,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:18:27,755 INFO L93 Difference]: Finished difference Result 367 states and 511 transitions. [2021-12-16 03:18:27,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 03:18:27,756 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) Word has length 157 [2021-12-16 03:18:27,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:18:27,757 INFO L225 Difference]: With dead ends: 367 [2021-12-16 03:18:27,758 INFO L226 Difference]: Without dead ends: 187 [2021-12-16 03:18:27,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-12-16 03:18:27,759 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 4 mSDsluCounter, 1199 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1405 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:18:27,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 1405 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:18:27,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-12-16 03:18:27,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2021-12-16 03:18:27,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 117 states have (on average 1.1794871794871795) internal successors, (138), 121 states have internal predecessors, (138), 51 states have call successors, (51), 15 states have call predecessors, (51), 18 states have return successors, (70), 50 states have call predecessors, (70), 50 states have call successors, (70) [2021-12-16 03:18:27,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 259 transitions. [2021-12-16 03:18:27,777 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 259 transitions. Word has length 157 [2021-12-16 03:18:27,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:18:27,777 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 259 transitions. [2021-12-16 03:18:27,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-16 03:18:27,777 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 259 transitions. [2021-12-16 03:18:27,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-16 03:18:27,779 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:18:27,779 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:18:27,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-16 03:18:27,995 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 [2021-12-16 03:18:27,996 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:18:27,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:18:27,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1262536975, now seen corresponding path program 1 times [2021-12-16 03:18:27,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:18:27,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143300853] [2021-12-16 03:18:27,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:18:27,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:18:28,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:28,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:18:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:28,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:18:28,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:28,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 03:18:28,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:28,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:18:28,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:28,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 03:18:28,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:28,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-16 03:18:28,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:28,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:18:28,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:28,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 03:18:28,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:28,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-16 03:18:28,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:28,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-16 03:18:28,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:28,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-16 03:18:28,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:28,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-16 03:18:28,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:28,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:18:28,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:28,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:18:28,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:28,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-16 03:18:28,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:28,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-16 03:18:28,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:28,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 03:18:28,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:28,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-16 03:18:28,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:28,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-16 03:18:28,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:28,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-16 03:18:28,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:28,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-16 03:18:28,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:28,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-16 03:18:28,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:28,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-16 03:18:28,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:28,438 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2021-12-16 03:18:28,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:18:28,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143300853] [2021-12-16 03:18:28,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143300853] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:18:28,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315294704] [2021-12-16 03:18:28,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:18:28,439 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:18:28,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:18:28,441 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) [2021-12-16 03:18:28,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-16 03:18:28,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:29,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 3033 conjuncts, 68 conjunts are in the unsatisfiable core [2021-12-16 03:18:29,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:18:29,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 03:18:29,151 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-16 03:18:29,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-16 03:18:29,864 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-12-16 03:18:29,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 30 [2021-12-16 03:18:29,920 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-16 03:18:29,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-16 03:18:29,972 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1729 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| v_ArrVal_1729))) is different from true [2021-12-16 03:18:29,979 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1730 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.C_memcpy_dest.base| v_ArrVal_1730))) is different from true [2021-12-16 03:18:29,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2021-12-16 03:18:32,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2021-12-16 03:18:34,477 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 165 proven. 7 refuted. 0 times theorem prover too weak. 85 trivial. 2 not checked. [2021-12-16 03:18:34,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:18:34,737 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1731 (Array Int Int))) (not (= 0 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#dest_copy~0#1.base| v_ArrVal_1731) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_common_harness_~#cur~3#1.offset|) 18446744073709551616)))) is different from false [2021-12-16 03:18:34,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315294704] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:18:34,749 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 03:18:34,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 20] total 25 [2021-12-16 03:18:34,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343055852] [2021-12-16 03:18:34,749 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 03:18:34,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-16 03:18:34,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:18:34,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-16 03:18:34,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=626, Unknown=4, NotChecked=156, Total=870 [2021-12-16 03:18:34,751 INFO L87 Difference]: Start difference. First operand 187 states and 259 transitions. Second operand has 25 states, 24 states have (on average 5.708333333333333) internal successors, (137), 23 states have internal predecessors, (137), 8 states have call successors, (48), 9 states have call predecessors, (48), 10 states have return successors, (46), 8 states have call predecessors, (46), 8 states have call successors, (46) [2021-12-16 03:18:44,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:18:44,204 INFO L93 Difference]: Finished difference Result 379 states and 521 transitions. [2021-12-16 03:18:44,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-16 03:18:44,205 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 5.708333333333333) internal successors, (137), 23 states have internal predecessors, (137), 8 states have call successors, (48), 9 states have call predecessors, (48), 10 states have return successors, (46), 8 states have call predecessors, (46), 8 states have call successors, (46) Word has length 168 [2021-12-16 03:18:44,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:18:44,206 INFO L225 Difference]: With dead ends: 379 [2021-12-16 03:18:44,206 INFO L226 Difference]: Without dead ends: 226 [2021-12-16 03:18:44,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 256 SyntacticMatches, 14 SemanticMatches, 39 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=170, Invalid=1240, Unknown=8, NotChecked=222, Total=1640 [2021-12-16 03:18:44,208 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 171 mSDsluCounter, 1138 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 2117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1251 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:18:44,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 1332 Invalid, 2117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 669 Invalid, 0 Unknown, 1251 Unchecked, 1.1s Time] [2021-12-16 03:18:44,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-12-16 03:18:44,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 218. [2021-12-16 03:18:44,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 140 states have (on average 1.1714285714285715) internal successors, (164), 145 states have internal predecessors, (164), 56 states have call successors, (56), 18 states have call predecessors, (56), 21 states have return successors, (75), 54 states have call predecessors, (75), 55 states have call successors, (75) [2021-12-16 03:18:44,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 295 transitions. [2021-12-16 03:18:44,240 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 295 transitions. Word has length 168 [2021-12-16 03:18:44,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:18:44,240 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 295 transitions. [2021-12-16 03:18:44,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 5.708333333333333) internal successors, (137), 23 states have internal predecessors, (137), 8 states have call successors, (48), 9 states have call predecessors, (48), 10 states have return successors, (46), 8 states have call predecessors, (46), 8 states have call successors, (46) [2021-12-16 03:18:44,241 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 295 transitions. [2021-12-16 03:18:44,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-12-16 03:18:44,242 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:18:44,242 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:18:44,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-16 03:18:44,463 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 [2021-12-16 03:18:44,463 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:18:44,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:18:44,464 INFO L85 PathProgramCache]: Analyzing trace with hash 111906590, now seen corresponding path program 2 times [2021-12-16 03:18:44,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:18:44,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144856770] [2021-12-16 03:18:44,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:18:44,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:18:44,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:44,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:18:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:44,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:18:44,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:44,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 03:18:44,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:44,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:18:44,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:44,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 03:18:44,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:44,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-16 03:18:44,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:44,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:18:44,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:44,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 03:18:44,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:44,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-16 03:18:44,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:44,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-16 03:18:44,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:44,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-16 03:18:44,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:44,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-16 03:18:44,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:44,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:18:44,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:44,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:18:44,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:44,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 03:18:44,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:44,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-16 03:18:44,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:44,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-16 03:18:44,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:44,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-16 03:18:44,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:44,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-16 03:18:44,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:44,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 03:18:44,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:44,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-16 03:18:44,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:44,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-16 03:18:44,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:44,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-16 03:18:44,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:18:44,941 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2021-12-16 03:18:44,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:18:44,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144856770] [2021-12-16 03:18:44,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144856770] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:18:44,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714020829] [2021-12-16 03:18:44,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 03:18:44,942 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:18:44,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:18:44,944 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) [2021-12-16 03:18:44,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-16 03:18:45,666 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 03:18:45,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 03:18:45,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 3167 conjuncts, 109 conjunts are in the unsatisfiable core [2021-12-16 03:18:45,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:18:46,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5