./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.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 cab1c092802d28f475b8a467f14dab6a3f796dc1a4441d8517361eeec98aa4cb --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 03:15:25,026 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:15:25,028 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:15:25,073 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:15:25,073 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:15:25,077 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:15:25,079 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:15:25,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:15:25,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:15:25,090 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:15:25,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:15:25,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:15:25,093 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:15:25,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:15:25,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:15:25,098 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:15:25,099 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:15:25,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:15:25,103 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:15:25,105 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:15:25,108 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:15:25,109 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:15:25,110 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:15:25,112 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:15:25,117 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:15:25,120 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:15:25,120 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:15:25,121 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:15:25,122 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:15:25,122 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:15:25,123 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:15:25,123 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:15:25,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:15:25,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:15:25,126 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:15:25,126 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:15:25,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:15:25,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:15:25,128 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:15:25,128 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:15:25,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:15:25,131 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 03:15:25,161 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:15:25,161 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:15:25,162 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:15:25,162 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:15:25,163 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:15:25,163 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:15:25,164 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:15:25,164 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:15:25,165 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:15:25,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:15:25,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:15:25,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:15:25,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:15:25,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:15:25,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:15:25,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:15:25,166 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:15:25,166 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:15:25,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:15:25,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:15:25,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:15:25,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:15:25,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:15:25,167 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:15:25,168 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:15:25,168 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:15:25,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:15:25,168 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:15:25,168 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:15:25,168 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:15:25,168 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cab1c092802d28f475b8a467f14dab6a3f796dc1a4441d8517361eeec98aa4cb [2021-12-28 03:15:25,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:15:25,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:15:25,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:15:25,472 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:15:25,472 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:15:25,474 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i [2021-12-28 03:15:25,513 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80fe69a80/b473399780824de09e7a4ab2498fca16/FLAGd95b1c5d9 [2021-12-28 03:15:26,162 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:15:26,163 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i [2021-12-28 03:15:26,193 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80fe69a80/b473399780824de09e7a4ab2498fca16/FLAGd95b1c5d9 [2021-12-28 03:15:26,252 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80fe69a80/b473399780824de09e7a4ab2498fca16 [2021-12-28 03:15:26,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:15:26,256 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:15:26,258 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:15:26,258 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:15:26,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:15:26,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:15:26" (1/1) ... [2021-12-28 03:15:26,263 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6549617e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:15:26, skipping insertion in model container [2021-12-28 03:15:26,263 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:15:26" (1/1) ... [2021-12-28 03:15:26,267 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:15:26,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:15:26,556 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_buf_write_from_whole_buffer_harness-1.i[4510,4523] [2021-12-28 03:15:26,561 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_buf_write_from_whole_buffer_harness-1.i[4570,4583] [2021-12-28 03:15:27,099 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:15:27,101 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:15:27,101 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:15:27,102 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:15:27,104 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:15:27,121 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:15:27,123 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:15:27,124 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:15:27,125 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:15:27,342 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:15:27,342 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:15:27,343 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:15:27,344 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:15:27,345 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:15:27,345 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:15:27,345 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:15:27,346 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:15:27,346 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:15:27,347 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:15:27,423 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-28 03:15:27,485 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:15:27,493 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:15:27,550 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:15:27,594 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:15:27,611 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_buf_write_from_whole_buffer_harness-1.i[4510,4523] [2021-12-28 03:15:27,612 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_buf_write_from_whole_buffer_harness-1.i[4570,4583] [2021-12-28 03:15:27,653 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:15:27,656 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:15:27,656 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:15:27,657 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:15:27,657 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:15:27,663 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:15:27,668 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:15:27,669 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:15:27,669 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:15:27,691 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:15:27,692 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:15:27,693 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:15:27,693 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:15:27,694 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:15:27,694 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:15:27,694 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:15:27,695 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:15:27,695 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:15:27,695 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:15:27,728 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-28 03:15:27,787 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:15:27,787 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:15:27,819 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:15:27,997 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:15:27,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:15:27 WrapperNode [2021-12-28 03:15:27,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:15:27,999 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:15:27,999 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:15:27,999 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:15:28,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:15:27" (1/1) ... [2021-12-28 03:15:28,090 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:15:27" (1/1) ... [2021-12-28 03:15:28,167 INFO L137 Inliner]: procedures = 691, calls = 2668, calls flagged for inlining = 58, calls inlined = 5, statements flattened = 900 [2021-12-28 03:15:28,168 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:15:28,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:15:28,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:15:28,169 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:15:28,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:15:27" (1/1) ... [2021-12-28 03:15:28,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:15:27" (1/1) ... [2021-12-28 03:15:28,186 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:15:27" (1/1) ... [2021-12-28 03:15:28,186 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:15:27" (1/1) ... [2021-12-28 03:15:28,227 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:15:27" (1/1) ... [2021-12-28 03:15:28,238 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:15:27" (1/1) ... [2021-12-28 03:15:28,243 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:15:27" (1/1) ... [2021-12-28 03:15:28,254 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:15:28,257 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:15:28,258 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:15:28,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:15:28,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:15:27" (1/1) ... [2021-12-28 03:15:28,263 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:15:28,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:15:28,281 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-28 03:15:28,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-28 03:15:28,307 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-12-28 03:15:28,308 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-12-28 03:15:28,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:15:28,308 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-28 03:15:28,308 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-28 03:15:28,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:15:28,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-28 03:15:28,309 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-28 03:15:28,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:15:28,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:15:28,309 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2021-12-28 03:15:28,310 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2021-12-28 03:15:28,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 03:15:28,310 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-12-28 03:15:28,311 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-12-28 03:15:28,311 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2021-12-28 03:15:28,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2021-12-28 03:15:28,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:15:28,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:15:28,312 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-28 03:15:28,312 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-28 03:15:28,312 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-12-28 03:15:28,312 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-12-28 03:15:28,312 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2021-12-28 03:15:28,312 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2021-12-28 03:15:28,312 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 03:15:28,313 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 03:15:28,313 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-12-28 03:15:28,313 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-12-28 03:15:28,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:15:28,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 03:15:28,314 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2021-12-28 03:15:28,314 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2021-12-28 03:15:28,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 03:15:28,314 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-28 03:15:28,314 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-28 03:15:28,314 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-28 03:15:28,315 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-28 03:15:28,315 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2021-12-28 03:15:28,315 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2021-12-28 03:15:28,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:15:28,315 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_buf_equivalence [2021-12-28 03:15:28,315 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_buf_equivalence [2021-12-28 03:15:28,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:15:28,531 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:15:28,533 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:15:29,196 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:15:29,203 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:15:29,204 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-28 03:15:29,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:15:29 BoogieIcfgContainer [2021-12-28 03:15:29,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:15:29,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:15:29,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:15:29,209 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:15:29,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:15:26" (1/3) ... [2021-12-28 03:15:29,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:15:29, skipping insertion in model container [2021-12-28 03:15:29,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:15:27" (2/3) ... [2021-12-28 03:15:29,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:15:29, skipping insertion in model container [2021-12-28 03:15:29,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:15:29" (3/3) ... [2021-12-28 03:15:29,211 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_from_whole_buffer_harness-1.i [2021-12-28 03:15:29,218 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:15:29,218 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:15:29,271 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:15:29,277 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 03:15:29,278 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 03:15:29,307 INFO L276 IsEmpty]: Start isEmpty. Operand has 187 states, 111 states have (on average 1.2072072072072073) internal successors, (134), 113 states have internal predecessors, (134), 58 states have call successors, (58), 16 states have call predecessors, (58), 16 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2021-12-28 03:15:29,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-12-28 03:15:29,321 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:15:29,322 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:15:29,322 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:15:29,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:15:29,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1514198340, now seen corresponding path program 1 times [2021-12-28 03:15:29,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:15:29,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903986551] [2021-12-28 03:15:29,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:15:29,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:15:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:29,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:15:29,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:29,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:15:29,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:29,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:15:29,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:29,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 03:15:29,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:29,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:15:29,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:29,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-28 03:15:29,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:29,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:15:29,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:29,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:29,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:29,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:15:29,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:29,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:29,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:29,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:15:29,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:29,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-28 03:15:29,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:29,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 03:15:29,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:29,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 03:15:29,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:29,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 03:15:29,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:29,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:29,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:29,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:15:29,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:29,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:29,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:29,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 03:15:29,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:29,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 03:15:29,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:29,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 03:15:29,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:30,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 03:15:30,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:30,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 03:15:30,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:30,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-28 03:15:30,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:30,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-28 03:15:30,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:30,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-28 03:15:30,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:30,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-28 03:15:30,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:30,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-28 03:15:30,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:30,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-28 03:15:30,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:30,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-28 03:15:30,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:30,100 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2021-12-28 03:15:30,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:15:30,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903986551] [2021-12-28 03:15:30,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903986551] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:15:30,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:15:30,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:15:30,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591776879] [2021-12-28 03:15:30,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:15:30,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:15:30,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:15:30,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:15:30,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:15:30,132 INFO L87 Difference]: Start difference. First operand has 187 states, 111 states have (on average 1.2072072072072073) internal successors, (134), 113 states have internal predecessors, (134), 58 states have call successors, (58), 16 states have call predecessors, (58), 16 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-12-28 03:15:30,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:15:30,502 INFO L93 Difference]: Finished difference Result 374 states and 536 transitions. [2021-12-28 03:15:30,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:15:30,504 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 176 [2021-12-28 03:15:30,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:15:30,511 INFO L225 Difference]: With dead ends: 374 [2021-12-28 03:15:30,512 INFO L226 Difference]: Without dead ends: 194 [2021-12-28 03:15:30,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:15:30,517 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 179 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 03:15:30,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 259 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 03:15:30,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-12-28 03:15:30,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 182. [2021-12-28 03:15:30,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 107 states have (on average 1.1869158878504673) internal successors, (127), 109 states have internal predecessors, (127), 58 states have call successors, (58), 16 states have call predecessors, (58), 16 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2021-12-28 03:15:30,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 242 transitions. [2021-12-28 03:15:30,555 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 242 transitions. Word has length 176 [2021-12-28 03:15:30,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:15:30,555 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 242 transitions. [2021-12-28 03:15:30,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-12-28 03:15:30,556 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 242 transitions. [2021-12-28 03:15:30,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-12-28 03:15:30,561 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:15:30,561 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:15:30,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 03:15:30,562 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:15:30,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:15:30,562 INFO L85 PathProgramCache]: Analyzing trace with hash 606096116, now seen corresponding path program 1 times [2021-12-28 03:15:30,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:15:30,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051575329] [2021-12-28 03:15:30,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:15:30,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:15:30,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:30,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:15:30,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:30,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:15:30,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:30,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:15:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:30,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 03:15:30,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:30,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:15:30,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:30,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-28 03:15:30,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:30,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:15:30,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:30,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:30,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:30,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:15:30,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:30,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:30,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:30,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:15:30,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:30,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-28 03:15:30,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:30,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 03:15:30,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:30,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 03:15:30,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:30,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 03:15:30,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:30,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:30,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:30,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:15:30,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:30,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:30,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:30,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 03:15:30,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:30,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 03:15:30,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:30,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 03:15:30,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:30,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 03:15:30,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:30,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 03:15:30,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:30,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-28 03:15:30,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:30,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-28 03:15:30,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:30,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-28 03:15:30,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:30,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-28 03:15:30,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:30,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-28 03:15:30,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:30,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-28 03:15:30,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:30,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-28 03:15:30,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:30,981 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-12-28 03:15:30,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:15:30,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051575329] [2021-12-28 03:15:30,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051575329] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:15:30,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314417842] [2021-12-28 03:15:30,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:15:30,982 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:15:30,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:15:31,007 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:15:31,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 03:15:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:31,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 3020 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-28 03:15:31,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:15:31,795 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2021-12-28 03:15:31,795 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:15:31,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314417842] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:15:31,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:15:31,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2021-12-28 03:15:31,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89915077] [2021-12-28 03:15:31,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:15:31,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:15:31,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:15:31,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:15:31,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-28 03:15:31,799 INFO L87 Difference]: Start difference. First operand 182 states and 242 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-12-28 03:15:31,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:15:31,968 INFO L93 Difference]: Finished difference Result 352 states and 472 transitions. [2021-12-28 03:15:31,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:15:31,969 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 176 [2021-12-28 03:15:31,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:15:31,971 INFO L225 Difference]: With dead ends: 352 [2021-12-28 03:15:31,971 INFO L226 Difference]: Without dead ends: 185 [2021-12-28 03:15:31,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-12-28 03:15:31,973 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 256 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:15:31,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 543 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:15:31,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-12-28 03:15:31,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2021-12-28 03:15:31,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 109 states have (on average 1.18348623853211) internal successors, (129), 112 states have internal predecessors, (129), 58 states have call successors, (58), 16 states have call predecessors, (58), 17 states have return successors, (64), 57 states have call predecessors, (64), 57 states have call successors, (64) [2021-12-28 03:15:31,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 251 transitions. [2021-12-28 03:15:31,987 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 251 transitions. Word has length 176 [2021-12-28 03:15:31,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:15:31,987 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 251 transitions. [2021-12-28 03:15:31,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-12-28 03:15:31,987 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 251 transitions. [2021-12-28 03:15:31,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-12-28 03:15:31,989 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:15:31,990 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:15:32,035 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-28 03:15:32,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:15:32,192 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:15:32,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:15:32,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1545774441, now seen corresponding path program 1 times [2021-12-28 03:15:32,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:15:32,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378722715] [2021-12-28 03:15:32,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:15:32,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:15:32,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:32,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:15:32,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:32,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:15:32,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:32,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:15:32,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:32,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 03:15:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:32,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:15:32,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:32,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-28 03:15:32,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:32,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:15:32,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:32,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:32,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:15:32,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:32,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:32,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:32,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:15:32,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:32,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 03:15:32,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:32,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-28 03:15:32,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:32,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 03:15:32,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:32,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 03:15:32,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:32,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:32,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:32,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:15:32,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:32,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:32,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:32,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 03:15:32,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:32,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 03:15:32,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:32,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 03:15:32,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:32,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 03:15:32,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:32,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-28 03:15:32,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:32,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-28 03:15:32,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:32,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-28 03:15:32,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:32,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-28 03:15:32,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:32,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-28 03:15:32,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:32,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-28 03:15:32,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:32,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-28 03:15:32,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:32,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-28 03:15:32,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:32,911 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-12-28 03:15:32,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:15:32,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378722715] [2021-12-28 03:15:32,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378722715] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:15:32,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803324348] [2021-12-28 03:15:32,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:15:32,915 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:15:32,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:15:32,922 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:15:32,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 03:15:33,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:33,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 3037 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-28 03:15:33,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:15:33,719 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 144 proven. 12 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-12-28 03:15:33,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:15:34,013 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-12-28 03:15:34,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803324348] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:15:34,013 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 03:15:34,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2021-12-28 03:15:34,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852483744] [2021-12-28 03:15:34,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 03:15:34,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-28 03:15:34,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:15:34,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-28 03:15:34,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-12-28 03:15:34,016 INFO L87 Difference]: Start difference. First operand 185 states and 251 transitions. Second operand has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 11 states have internal predecessors, (94), 7 states have call successors, (69), 6 states have call predecessors, (69), 5 states have return successors, (64), 7 states have call predecessors, (64), 7 states have call successors, (64) [2021-12-28 03:15:34,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:15:34,667 INFO L93 Difference]: Finished difference Result 336 states and 456 transitions. [2021-12-28 03:15:34,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 03:15:34,668 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 11 states have internal predecessors, (94), 7 states have call successors, (69), 6 states have call predecessors, (69), 5 states have return successors, (64), 7 states have call predecessors, (64), 7 states have call successors, (64) Word has length 182 [2021-12-28 03:15:34,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:15:34,669 INFO L225 Difference]: With dead ends: 336 [2021-12-28 03:15:34,670 INFO L226 Difference]: Without dead ends: 197 [2021-12-28 03:15:34,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2021-12-28 03:15:34,671 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 466 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-28 03:15:34,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [466 Valid, 404 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-28 03:15:34,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-12-28 03:15:34,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 185. [2021-12-28 03:15:34,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 109 states have (on average 1.18348623853211) internal successors, (129), 112 states have internal predecessors, (129), 58 states have call successors, (58), 16 states have call predecessors, (58), 17 states have return successors, (62), 57 states have call predecessors, (62), 57 states have call successors, (62) [2021-12-28 03:15:34,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 249 transitions. [2021-12-28 03:15:34,684 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 249 transitions. Word has length 182 [2021-12-28 03:15:34,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:15:34,684 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 249 transitions. [2021-12-28 03:15:34,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 11 states have internal predecessors, (94), 7 states have call successors, (69), 6 states have call predecessors, (69), 5 states have return successors, (64), 7 states have call predecessors, (64), 7 states have call successors, (64) [2021-12-28 03:15:34,684 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 249 transitions. [2021-12-28 03:15:34,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-12-28 03:15:34,700 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:15:34,700 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:15:34,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-28 03:15:34,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-28 03:15:34,901 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:15:34,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:15:34,902 INFO L85 PathProgramCache]: Analyzing trace with hash 2124831764, now seen corresponding path program 2 times [2021-12-28 03:15:34,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:15:34,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357460007] [2021-12-28 03:15:34,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:15:34,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:15:34,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:35,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:15:35,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:35,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:15:35,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:35,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:15:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:35,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 03:15:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:35,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:15:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:35,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-28 03:15:35,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:35,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:15:35,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:35,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:35,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:15:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:35,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:35,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:15:35,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:35,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 03:15:35,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:35,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-28 03:15:35,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:35,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 03:15:35,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:35,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 03:15:35,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:35,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:35,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:35,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:15:35,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:35,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:35,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:35,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 03:15:35,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:35,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 03:15:35,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:35,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 03:15:35,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:35,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-28 03:15:35,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:35,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-28 03:15:35,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:35,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-28 03:15:35,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:35,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-28 03:15:35,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:35,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-28 03:15:35,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:35,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-28 03:15:35,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:35,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-28 03:15:35,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:35,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-28 03:15:35,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:35,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-12-28 03:15:35,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:35,442 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 4 proven. 38 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2021-12-28 03:15:35,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:15:35,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357460007] [2021-12-28 03:15:35,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357460007] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:15:35,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329314443] [2021-12-28 03:15:35,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 03:15:35,443 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:15:35,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:15:35,444 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:15:35,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-28 03:15:36,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 03:15:36,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:15:36,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 3054 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-28 03:15:36,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:15:36,570 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2021-12-28 03:15:36,570 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:15:36,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329314443] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:15:36,570 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:15:36,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 20 [2021-12-28 03:15:36,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773132620] [2021-12-28 03:15:36,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:15:36,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 03:15:36,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:15:36,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 03:15:36,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2021-12-28 03:15:36,572 INFO L87 Difference]: Start difference. First operand 185 states and 249 transitions. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 8 states have internal predecessors, (57), 5 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 5 states have call predecessors, (27), 4 states have call successors, (27) [2021-12-28 03:15:36,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:15:36,998 INFO L93 Difference]: Finished difference Result 306 states and 416 transitions. [2021-12-28 03:15:36,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 03:15:36,999 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 8 states have internal predecessors, (57), 5 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 5 states have call predecessors, (27), 4 states have call successors, (27) Word has length 188 [2021-12-28 03:15:36,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:15:37,001 INFO L225 Difference]: With dead ends: 306 [2021-12-28 03:15:37,001 INFO L226 Difference]: Without dead ends: 185 [2021-12-28 03:15:37,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2021-12-28 03:15:37,003 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 279 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 03:15:37,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 1185 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 03:15:37,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-12-28 03:15:37,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2021-12-28 03:15:37,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 109 states have (on average 1.18348623853211) internal successors, (129), 112 states have internal predecessors, (129), 58 states have call successors, (58), 16 states have call predecessors, (58), 17 states have return successors, (58), 57 states have call predecessors, (58), 57 states have call successors, (58) [2021-12-28 03:15:37,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 245 transitions. [2021-12-28 03:15:37,025 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 245 transitions. Word has length 188 [2021-12-28 03:15:37,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:15:37,027 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 245 transitions. [2021-12-28 03:15:37,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 8 states have internal predecessors, (57), 5 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 5 states have call predecessors, (27), 4 states have call successors, (27) [2021-12-28 03:15:37,028 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 245 transitions. [2021-12-28 03:15:37,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-12-28 03:15:37,030 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:15:37,030 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:15:37,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-28 03:15:37,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:15:37,256 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:15:37,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:15:37,256 INFO L85 PathProgramCache]: Analyzing trace with hash -806726443, now seen corresponding path program 3 times [2021-12-28 03:15:37,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:15:37,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259959758] [2021-12-28 03:15:37,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:15:37,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:15:37,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:37,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:15:37,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:37,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:15:37,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:37,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:15:37,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:37,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 03:15:37,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:37,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:15:37,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:37,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-28 03:15:37,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:37,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:15:37,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:37,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:37,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:37,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:15:37,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:37,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:37,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:15:37,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:37,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 03:15:37,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:37,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-28 03:15:37,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:37,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 03:15:37,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:37,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 03:15:37,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:37,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:37,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:15:37,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:37,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:37,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:37,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 03:15:37,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:37,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 03:15:37,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:37,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 03:15:37,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:37,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-28 03:15:37,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:37,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-28 03:15:37,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:37,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-28 03:15:37,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:37,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-28 03:15:37,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:37,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-28 03:15:37,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:37,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-28 03:15:37,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:37,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-28 03:15:37,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:37,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-28 03:15:37,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:37,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-28 03:15:37,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:37,901 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2021-12-28 03:15:37,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:15:37,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259959758] [2021-12-28 03:15:37,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259959758] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:15:37,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107023021] [2021-12-28 03:15:37,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-28 03:15:37,902 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:15:37,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:15:37,916 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:15:37,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-28 03:15:38,283 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-12-28 03:15:38,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:15:38,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 2325 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-28 03:15:38,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:15:38,635 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2021-12-28 03:15:38,635 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:15:38,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107023021] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:15:38,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:15:38,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2021-12-28 03:15:38,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146217061] [2021-12-28 03:15:38,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:15:38,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 03:15:38,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:15:38,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 03:15:38,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-12-28 03:15:38,637 INFO L87 Difference]: Start difference. First operand 185 states and 245 transitions. Second operand has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2021-12-28 03:15:38,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:15:38,712 INFO L93 Difference]: Finished difference Result 197 states and 265 transitions. [2021-12-28 03:15:38,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 03:15:38,712 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) Word has length 206 [2021-12-28 03:15:38,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:15:38,714 INFO L225 Difference]: With dead ends: 197 [2021-12-28 03:15:38,714 INFO L226 Difference]: Without dead ends: 195 [2021-12-28 03:15:38,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-12-28 03:15:38,715 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 22 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1644 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:15:38,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 1644 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:15:38,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-12-28 03:15:38,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 194. [2021-12-28 03:15:38,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 115 states have (on average 1.173913043478261) internal successors, (135), 119 states have internal predecessors, (135), 59 states have call successors, (59), 17 states have call predecessors, (59), 19 states have return successors, (68), 58 states have call predecessors, (68), 58 states have call successors, (68) [2021-12-28 03:15:38,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 262 transitions. [2021-12-28 03:15:38,731 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 262 transitions. Word has length 206 [2021-12-28 03:15:38,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:15:38,732 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 262 transitions. [2021-12-28 03:15:38,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2021-12-28 03:15:38,733 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 262 transitions. [2021-12-28 03:15:38,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-12-28 03:15:38,736 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:15:38,736 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:15:38,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-28 03:15:38,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:15:38,938 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:15:38,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:15:38,938 INFO L85 PathProgramCache]: Analyzing trace with hash 2116281437, now seen corresponding path program 1 times [2021-12-28 03:15:38,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:15:38,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332446722] [2021-12-28 03:15:38,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:15:38,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:15:39,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:39,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:15:39,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:39,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:15:39,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:39,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:15:39,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:39,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 03:15:39,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:39,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:15:39,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:39,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-28 03:15:39,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:39,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:15:39,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:39,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:39,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:39,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:15:39,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:39,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:39,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:39,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:15:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:39,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 03:15:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:39,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-28 03:15:39,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:39,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 03:15:39,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:39,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 03:15:39,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:39,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:39,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:15:39,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:39,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:39,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:39,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 03:15:39,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:39,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 03:15:39,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:39,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 03:15:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:39,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-28 03:15:39,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:39,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-28 03:15:39,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:39,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-28 03:15:39,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:39,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-28 03:15:39,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:39,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-28 03:15:39,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:39,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-28 03:15:39,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:39,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-28 03:15:39,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:39,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-28 03:15:39,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:39,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-28 03:15:39,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:39,398 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2021-12-28 03:15:39,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:15:39,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332446722] [2021-12-28 03:15:39,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332446722] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:15:39,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245687692] [2021-12-28 03:15:39,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:15:39,399 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:15:39,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:15:39,400 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:15:39,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-28 03:15:39,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:39,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 3117 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-28 03:15:39,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:15:40,315 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 164 proven. 56 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-28 03:15:40,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:15:40,757 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2021-12-28 03:15:40,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245687692] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:15:40,757 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 03:15:40,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2021-12-28 03:15:40,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417833410] [2021-12-28 03:15:40,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 03:15:40,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-28 03:15:40,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:15:40,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-28 03:15:40,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-12-28 03:15:40,760 INFO L87 Difference]: Start difference. First operand 194 states and 262 transitions. Second operand has 14 states, 14 states have (on average 10.142857142857142) internal successors, (142), 11 states have internal predecessors, (142), 7 states have call successors, (76), 6 states have call predecessors, (76), 5 states have return successors, (73), 7 states have call predecessors, (73), 7 states have call successors, (73) [2021-12-28 03:15:41,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:15:41,570 INFO L93 Difference]: Finished difference Result 333 states and 446 transitions. [2021-12-28 03:15:41,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 03:15:41,571 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.142857142857142) internal successors, (142), 11 states have internal predecessors, (142), 7 states have call successors, (76), 6 states have call predecessors, (76), 5 states have return successors, (73), 7 states have call predecessors, (73), 7 states have call successors, (73) Word has length 210 [2021-12-28 03:15:41,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:15:41,573 INFO L225 Difference]: With dead ends: 333 [2021-12-28 03:15:41,573 INFO L226 Difference]: Without dead ends: 203 [2021-12-28 03:15:41,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2021-12-28 03:15:41,575 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 276 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-28 03:15:41,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 448 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-28 03:15:41,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-12-28 03:15:41,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 191. [2021-12-28 03:15:41,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 113 states have (on average 1.168141592920354) internal successors, (132), 116 states have internal predecessors, (132), 59 states have call successors, (59), 17 states have call predecessors, (59), 18 states have return successors, (67), 58 states have call predecessors, (67), 58 states have call successors, (67) [2021-12-28 03:15:41,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 258 transitions. [2021-12-28 03:15:41,591 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 258 transitions. Word has length 210 [2021-12-28 03:15:41,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:15:41,591 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 258 transitions. [2021-12-28 03:15:41,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.142857142857142) internal successors, (142), 11 states have internal predecessors, (142), 7 states have call successors, (76), 6 states have call predecessors, (76), 5 states have return successors, (73), 7 states have call predecessors, (73), 7 states have call successors, (73) [2021-12-28 03:15:41,592 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 258 transitions. [2021-12-28 03:15:41,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-12-28 03:15:41,594 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:15:41,594 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:15:41,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-28 03:15:41,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:15:41,814 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:15:41,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:15:41,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1227624248, now seen corresponding path program 1 times [2021-12-28 03:15:41,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:15:41,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348837753] [2021-12-28 03:15:41,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:15:41,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:15:42,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:42,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:15:42,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:42,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:15:42,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:42,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:15:42,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:42,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 03:15:42,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:42,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:15:42,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:42,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-28 03:15:42,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:42,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:15:42,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:42,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:42,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:42,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:15:42,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:42,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:42,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:42,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:15:42,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:42,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 03:15:42,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:42,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-28 03:15:42,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:42,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 03:15:42,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:42,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 03:15:42,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:42,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:42,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:15:42,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:42,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:42,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 03:15:42,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:42,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 03:15:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:42,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 03:15:42,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:42,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-28 03:15:42,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:42,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-28 03:15:42,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:42,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-28 03:15:42,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:42,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-28 03:15:42,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:42,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-28 03:15:42,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:42,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-28 03:15:42,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:42,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-28 03:15:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:42,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-28 03:15:42,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:42,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-28 03:15:42,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:42,621 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2021-12-28 03:15:42,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:15:42,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348837753] [2021-12-28 03:15:42,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348837753] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:15:42,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:15:42,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 03:15:42,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090008625] [2021-12-28 03:15:42,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:15:42,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 03:15:42,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:15:42,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 03:15:42,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:15:42,624 INFO L87 Difference]: Start difference. First operand 191 states and 258 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2021-12-28 03:15:43,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:15:43,281 INFO L93 Difference]: Finished difference Result 404 states and 564 transitions. [2021-12-28 03:15:43,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 03:15:43,282 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) Word has length 216 [2021-12-28 03:15:43,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:15:43,284 INFO L225 Difference]: With dead ends: 404 [2021-12-28 03:15:43,284 INFO L226 Difference]: Without dead ends: 228 [2021-12-28 03:15:43,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-12-28 03:15:43,285 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 260 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-28 03:15:43,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 443 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-28 03:15:43,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-12-28 03:15:43,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 196. [2021-12-28 03:15:43,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 118 states have (on average 1.1779661016949152) internal successors, (139), 121 states have internal predecessors, (139), 59 states have call successors, (59), 17 states have call predecessors, (59), 18 states have return successors, (67), 58 states have call predecessors, (67), 58 states have call successors, (67) [2021-12-28 03:15:43,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 265 transitions. [2021-12-28 03:15:43,296 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 265 transitions. Word has length 216 [2021-12-28 03:15:43,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:15:43,296 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 265 transitions. [2021-12-28 03:15:43,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2021-12-28 03:15:43,297 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 265 transitions. [2021-12-28 03:15:43,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-12-28 03:15:43,298 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:15:43,299 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:15:43,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 03:15:43,299 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:15:43,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:15:43,299 INFO L85 PathProgramCache]: Analyzing trace with hash -969458810, now seen corresponding path program 1 times [2021-12-28 03:15:43,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:15:43,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582924110] [2021-12-28 03:15:43,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:15:43,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:15:43,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:43,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:15:43,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:43,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:15:43,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:43,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:15:43,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:43,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 03:15:43,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:43,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:15:43,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:43,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-28 03:15:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:43,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:15:43,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:43,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:43,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:43,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:15:43,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:43,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:43,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:43,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:15:43,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:43,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 03:15:43,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:43,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-28 03:15:43,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:43,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 03:15:43,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:43,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 03:15:43,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:43,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:43,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:43,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:15:43,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:43,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:43,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:43,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 03:15:43,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:43,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 03:15:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:43,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 03:15:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:43,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-28 03:15:43,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:43,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-28 03:15:43,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:43,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-28 03:15:43,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:43,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-28 03:15:43,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:43,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-28 03:15:43,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:43,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-28 03:15:44,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:44,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-28 03:15:44,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:44,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-28 03:15:44,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:44,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-28 03:15:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:44,123 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 60 proven. 20 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-12-28 03:15:44,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:15:44,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582924110] [2021-12-28 03:15:44,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582924110] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:15:44,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051203261] [2021-12-28 03:15:44,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:15:44,124 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:15:44,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:15:44,140 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:15:44,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-28 03:15:44,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:44,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 3129 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-28 03:15:44,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:15:44,914 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-28 03:15:45,425 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2021-12-28 03:15:45,425 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:15:45,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051203261] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:15:45,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:15:45,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [15] total 26 [2021-12-28 03:15:45,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992082360] [2021-12-28 03:15:45,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:15:45,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-28 03:15:45,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:15:45,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-28 03:15:45,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2021-12-28 03:15:45,427 INFO L87 Difference]: Start difference. First operand 196 states and 265 transitions. Second operand has 13 states, 12 states have (on average 6.833333333333333) internal successors, (82), 10 states have internal predecessors, (82), 5 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (30), 6 states have call predecessors, (30), 5 states have call successors, (30) [2021-12-28 03:15:45,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:15:45,598 INFO L93 Difference]: Finished difference Result 400 states and 535 transitions. [2021-12-28 03:15:45,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 03:15:45,598 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.833333333333333) internal successors, (82), 10 states have internal predecessors, (82), 5 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (30), 6 states have call predecessors, (30), 5 states have call successors, (30) Word has length 216 [2021-12-28 03:15:45,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:15:45,599 INFO L225 Difference]: With dead ends: 400 [2021-12-28 03:15:45,600 INFO L226 Difference]: Without dead ends: 215 [2021-12-28 03:15:45,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2021-12-28 03:15:45,601 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 25 mSDsluCounter, 2125 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 2358 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 151 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:15:45,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 2358 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 151 Unchecked, 0.1s Time] [2021-12-28 03:15:45,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-12-28 03:15:45,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2021-12-28 03:15:45,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 136 states have (on average 1.1911764705882353) internal successors, (162), 139 states have internal predecessors, (162), 59 states have call successors, (59), 18 states have call predecessors, (59), 19 states have return successors, (67), 58 states have call predecessors, (67), 58 states have call successors, (67) [2021-12-28 03:15:45,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 288 transitions. [2021-12-28 03:15:45,611 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 288 transitions. Word has length 216 [2021-12-28 03:15:45,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:15:45,612 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 288 transitions. [2021-12-28 03:15:45,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.833333333333333) internal successors, (82), 10 states have internal predecessors, (82), 5 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (30), 6 states have call predecessors, (30), 5 states have call successors, (30) [2021-12-28 03:15:45,612 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 288 transitions. [2021-12-28 03:15:45,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-12-28 03:15:45,614 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:15:45,614 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:15:45,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-28 03:15:45,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:15:45,835 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:15:45,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:15:45,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1130279620, now seen corresponding path program 1 times [2021-12-28 03:15:45,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:15:45,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964398019] [2021-12-28 03:15:45,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:15:45,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:15:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:45,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:15:45,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:45,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:15:45,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:46,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:15:46,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:46,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 03:15:46,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:46,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:15:46,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:46,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-28 03:15:46,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:46,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:15:46,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:46,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:46,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:46,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:15:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:46,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:46,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:46,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:15:46,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:46,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 03:15:46,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:46,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-28 03:15:46,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:46,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 03:15:46,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:46,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 03:15:46,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:46,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:46,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:46,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:15:46,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:46,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:46,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:46,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 03:15:46,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:46,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 03:15:46,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:46,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 03:15:46,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:46,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-28 03:15:46,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:46,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-28 03:15:46,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:46,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-28 03:15:46,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:46,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-28 03:15:46,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:46,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-28 03:15:46,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:46,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-28 03:15:46,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:46,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-28 03:15:46,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:46,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-28 03:15:46,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:46,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-28 03:15:46,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:46,270 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2021-12-28 03:15:46,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:15:46,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964398019] [2021-12-28 03:15:46,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964398019] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:15:46,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547191764] [2021-12-28 03:15:46,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:15:46,270 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:15:46,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:15:46,271 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:15:46,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-28 03:15:46,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:46,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 3124 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 03:15:46,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:15:47,058 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2021-12-28 03:15:47,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:15:47,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547191764] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:15:47,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:15:47,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2021-12-28 03:15:47,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132052215] [2021-12-28 03:15:47,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:15:47,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:15:47,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:15:47,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:15:47,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-28 03:15:47,060 INFO L87 Difference]: Start difference. First operand 215 states and 288 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-28 03:15:47,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:15:47,083 INFO L93 Difference]: Finished difference Result 409 states and 556 transitions. [2021-12-28 03:15:47,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:15:47,083 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 216 [2021-12-28 03:15:47,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:15:47,084 INFO L225 Difference]: With dead ends: 409 [2021-12-28 03:15:47,084 INFO L226 Difference]: Without dead ends: 224 [2021-12-28 03:15:47,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:15:47,086 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 20 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:15:47,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 715 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:15:47,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-12-28 03:15:47,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 207. [2021-12-28 03:15:47,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 129 states have (on average 1.186046511627907) internal successors, (153), 131 states have internal predecessors, (153), 59 states have call successors, (59), 18 states have call predecessors, (59), 18 states have return successors, (66), 58 states have call predecessors, (66), 58 states have call successors, (66) [2021-12-28 03:15:47,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 278 transitions. [2021-12-28 03:15:47,095 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 278 transitions. Word has length 216 [2021-12-28 03:15:47,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:15:47,095 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 278 transitions. [2021-12-28 03:15:47,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-28 03:15:47,095 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 278 transitions. [2021-12-28 03:15:47,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-12-28 03:15:47,096 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:15:47,097 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:15:47,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-28 03:15:47,317 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 [2021-12-28 03:15:47,318 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:15:47,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:15:47,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1998809472, now seen corresponding path program 2 times [2021-12-28 03:15:47,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:15:47,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079323434] [2021-12-28 03:15:47,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:15:47,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:15:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:47,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:15:47,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:47,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:15:47,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:47,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:15:47,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:47,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 03:15:47,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:47,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:15:47,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:47,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-28 03:15:47,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:47,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:15:47,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:47,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:47,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:47,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:15:47,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:47,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:47,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:47,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:15:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:47,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 03:15:47,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:47,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 03:15:47,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:47,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-28 03:15:47,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:47,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 03:15:47,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:47,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:47,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:47,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:15:47,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:47,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:47,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:47,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-28 03:15:47,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:47,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-28 03:15:47,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:47,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-28 03:15:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:47,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-28 03:15:47,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:47,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-28 03:15:47,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:47,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-28 03:15:47,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:47,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-28 03:15:47,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:47,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-28 03:15:47,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:47,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-28 03:15:47,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:47,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-28 03:15:47,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:47,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-28 03:15:47,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:47,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-28 03:15:47,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:47,795 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2021-12-28 03:15:47,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:15:47,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079323434] [2021-12-28 03:15:47,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079323434] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:15:47,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080611686] [2021-12-28 03:15:47,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 03:15:47,796 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:15:47,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:15:47,812 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:15:47,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-28 03:15:48,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 03:15:48,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:15:48,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 3136 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-28 03:15:48,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:15:49,085 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-28 03:15:49,433 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2021-12-28 03:15:49,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:15:49,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080611686] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:15:49,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:15:49,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [12] total 23 [2021-12-28 03:15:49,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874657839] [2021-12-28 03:15:49,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:15:49,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-28 03:15:49,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:15:49,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-28 03:15:49,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2021-12-28 03:15:49,435 INFO L87 Difference]: Start difference. First operand 207 states and 278 transitions. Second operand has 13 states, 12 states have (on average 7.583333333333333) internal successors, (91), 10 states have internal predecessors, (91), 5 states have call successors, (31), 3 states have call predecessors, (31), 5 states have return successors, (29), 6 states have call predecessors, (29), 5 states have call successors, (29) [2021-12-28 03:15:49,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:15:49,536 INFO L93 Difference]: Finished difference Result 387 states and 519 transitions. [2021-12-28 03:15:49,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 03:15:49,536 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 7.583333333333333) internal successors, (91), 10 states have internal predecessors, (91), 5 states have call successors, (31), 3 states have call predecessors, (31), 5 states have return successors, (29), 6 states have call predecessors, (29), 5 states have call successors, (29) Word has length 220 [2021-12-28 03:15:49,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:15:49,538 INFO L225 Difference]: With dead ends: 387 [2021-12-28 03:15:49,538 INFO L226 Difference]: Without dead ends: 229 [2021-12-28 03:15:49,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2021-12-28 03:15:49,539 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 24 mSDsluCounter, 1559 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 1809 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 112 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:15:49,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 1809 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 112 Unchecked, 0.1s Time] [2021-12-28 03:15:49,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-12-28 03:15:49,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 207. [2021-12-28 03:15:49,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 129 states have (on average 1.186046511627907) internal successors, (153), 131 states have internal predecessors, (153), 59 states have call successors, (59), 18 states have call predecessors, (59), 18 states have return successors, (65), 58 states have call predecessors, (65), 58 states have call successors, (65) [2021-12-28 03:15:49,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 277 transitions. [2021-12-28 03:15:49,547 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 277 transitions. Word has length 220 [2021-12-28 03:15:49,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:15:49,556 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 277 transitions. [2021-12-28 03:15:49,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 7.583333333333333) internal successors, (91), 10 states have internal predecessors, (91), 5 states have call successors, (31), 3 states have call predecessors, (31), 5 states have return successors, (29), 6 states have call predecessors, (29), 5 states have call successors, (29) [2021-12-28 03:15:49,556 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 277 transitions. [2021-12-28 03:15:49,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-12-28 03:15:49,557 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:15:49,557 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:15:49,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-28 03:15:49,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-28 03:15:49,759 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:15:49,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:15:49,759 INFO L85 PathProgramCache]: Analyzing trace with hash 2120990534, now seen corresponding path program 3 times [2021-12-28 03:15:49,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:15:49,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488944574] [2021-12-28 03:15:49,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:15:49,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:15:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:50,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:15:50,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:50,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:15:50,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:50,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:15:50,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:50,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 03:15:50,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:50,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:15:50,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:50,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-28 03:15:50,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:50,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:15:50,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:50,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:50,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:50,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:15:50,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:50,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:50,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:50,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:15:50,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:50,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 03:15:50,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:50,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 03:15:50,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:50,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-28 03:15:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:50,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 03:15:50,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:50,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:50,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:50,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:15:50,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:50,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:50,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:50,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-28 03:15:50,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:50,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-28 03:15:50,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:50,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-28 03:15:50,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:50,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-28 03:15:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:50,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-28 03:15:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:50,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-28 03:15:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:50,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-28 03:15:50,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:50,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-28 03:15:50,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:50,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-12-28 03:15:50,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:50,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-28 03:15:50,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:50,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-28 03:15:50,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:50,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-28 03:15:50,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:50,303 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 6 proven. 43 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2021-12-28 03:15:50,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:15:50,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488944574] [2021-12-28 03:15:50,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488944574] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:15:50,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907129467] [2021-12-28 03:15:50,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-28 03:15:50,304 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:15:50,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:15:50,305 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:15:50,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-28 03:15:51,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-28 03:15:51,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:15:51,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 2573 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-28 03:15:51,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:15:52,140 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 163 proven. 4 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-12-28 03:15:52,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:15:52,545 INFO L353 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-12-28 03:15:52,545 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-12-28 03:15:52,551 INFO L353 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2021-12-28 03:15:52,551 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2021-12-28 03:15:52,729 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 88 proven. 10 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-12-28 03:15:52,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907129467] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:15:52,730 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 03:15:52,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11] total 28 [2021-12-28 03:15:52,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047975243] [2021-12-28 03:15:52,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 03:15:52,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-28 03:15:52,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:15:52,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-28 03:15:52,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=672, Unknown=0, NotChecked=0, Total=756 [2021-12-28 03:15:52,732 INFO L87 Difference]: Start difference. First operand 207 states and 277 transitions. Second operand has 28 states, 27 states have (on average 4.592592592592593) internal successors, (124), 24 states have internal predecessors, (124), 4 states have call successors, (51), 6 states have call predecessors, (51), 7 states have return successors, (47), 4 states have call predecessors, (47), 4 states have call successors, (47) [2021-12-28 03:15:56,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:15:56,107 INFO L93 Difference]: Finished difference Result 505 states and 694 transitions. [2021-12-28 03:15:56,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-12-28 03:15:56,108 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 4.592592592592593) internal successors, (124), 24 states have internal predecessors, (124), 4 states have call successors, (51), 6 states have call predecessors, (51), 7 states have return successors, (47), 4 states have call predecessors, (47), 4 states have call successors, (47) Word has length 224 [2021-12-28 03:15:56,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:15:56,110 INFO L225 Difference]: With dead ends: 505 [2021-12-28 03:15:56,110 INFO L226 Difference]: Without dead ends: 304 [2021-12-28 03:15:56,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 494 SyntacticMatches, 8 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1052 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=781, Invalid=4049, Unknown=0, NotChecked=0, Total=4830 [2021-12-28 03:15:56,112 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 615 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 3030 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 3751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 3030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 419 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-28 03:15:56,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [640 Valid, 1192 Invalid, 3751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 3030 Invalid, 0 Unknown, 419 Unchecked, 1.7s Time] [2021-12-28 03:15:56,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-12-28 03:15:56,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 251. [2021-12-28 03:15:56,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 166 states have (on average 1.1927710843373494) internal successors, (198), 170 states have internal predecessors, (198), 62 states have call successors, (62), 20 states have call predecessors, (62), 22 states have return successors, (84), 61 states have call predecessors, (84), 61 states have call successors, (84) [2021-12-28 03:15:56,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 344 transitions. [2021-12-28 03:15:56,125 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 344 transitions. Word has length 224 [2021-12-28 03:15:56,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:15:56,125 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 344 transitions. [2021-12-28 03:15:56,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 4.592592592592593) internal successors, (124), 24 states have internal predecessors, (124), 4 states have call successors, (51), 6 states have call predecessors, (51), 7 states have return successors, (47), 4 states have call predecessors, (47), 4 states have call successors, (47) [2021-12-28 03:15:56,126 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 344 transitions. [2021-12-28 03:15:56,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-12-28 03:15:56,127 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:15:56,127 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:15:56,160 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-28 03:15:56,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:15:56,348 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:15:56,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:15:56,348 INFO L85 PathProgramCache]: Analyzing trace with hash 490308611, now seen corresponding path program 1 times [2021-12-28 03:15:56,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:15:56,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329945284] [2021-12-28 03:15:56,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:15:56,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:15:56,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:56,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:15:56,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:56,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:15:56,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:56,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:15:56,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:56,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 03:15:56,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:56,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:15:56,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:56,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-28 03:15:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:56,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:15:56,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:56,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:56,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:56,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:15:56,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:56,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:56,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:56,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:15:56,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:56,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-28 03:15:56,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:56,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 03:15:56,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:56,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 03:15:56,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:56,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 03:15:56,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:56,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:56,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:56,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:15:56,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:56,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:56,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:56,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 03:15:56,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:56,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-28 03:15:56,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:56,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-28 03:15:56,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:56,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-28 03:15:56,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:56,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-28 03:15:56,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:56,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-28 03:15:56,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:56,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-28 03:15:56,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:56,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-28 03:15:56,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:56,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-28 03:15:56,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:56,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-28 03:15:56,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:56,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-28 03:15:56,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:56,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-28 03:15:56,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:56,614 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2021-12-28 03:15:56,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:15:56,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329945284] [2021-12-28 03:15:56,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329945284] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:15:56,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616277336] [2021-12-28 03:15:56,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:15:56,615 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:15:56,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:15:56,616 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:15:56,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-28 03:15:57,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:57,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 3143 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 03:15:57,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:15:57,376 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2021-12-28 03:15:57,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:15:57,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616277336] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:15:57,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:15:57,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2021-12-28 03:15:57,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978619459] [2021-12-28 03:15:57,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:15:57,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:15:57,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:15:57,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:15:57,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-28 03:15:57,378 INFO L87 Difference]: Start difference. First operand 251 states and 344 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-28 03:15:57,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:15:57,397 INFO L93 Difference]: Finished difference Result 500 states and 691 transitions. [2021-12-28 03:15:57,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:15:57,398 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 226 [2021-12-28 03:15:57,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:15:57,399 INFO L225 Difference]: With dead ends: 500 [2021-12-28 03:15:57,399 INFO L226 Difference]: Without dead ends: 264 [2021-12-28 03:15:57,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:15:57,400 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 9 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:15:57,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 708 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:15:57,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-12-28 03:15:57,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 255. [2021-12-28 03:15:57,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 170 states have (on average 1.188235294117647) internal successors, (202), 174 states have internal predecessors, (202), 62 states have call successors, (62), 20 states have call predecessors, (62), 22 states have return successors, (84), 61 states have call predecessors, (84), 61 states have call successors, (84) [2021-12-28 03:15:57,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 348 transitions. [2021-12-28 03:15:57,409 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 348 transitions. Word has length 226 [2021-12-28 03:15:57,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:15:57,410 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 348 transitions. [2021-12-28 03:15:57,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-28 03:15:57,410 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 348 transitions. [2021-12-28 03:15:57,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-12-28 03:15:57,411 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:15:57,411 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:15:57,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-28 03:15:57,631 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,SelfDestructingSolverStorable11 [2021-12-28 03:15:57,632 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:15:57,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:15:57,632 INFO L85 PathProgramCache]: Analyzing trace with hash 910460735, now seen corresponding path program 1 times [2021-12-28 03:15:57,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:15:57,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519316329] [2021-12-28 03:15:57,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:15:57,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:15:57,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:57,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:15:57,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:57,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:15:57,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:57,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:15:57,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:57,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 03:15:57,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:57,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:15:57,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:57,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-28 03:15:57,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:57,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:15:57,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:57,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:57,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:57,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:15:57,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:57,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:57,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:57,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:15:57,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:57,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-28 03:15:57,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:57,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 03:15:57,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:57,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 03:15:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:57,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 03:15:57,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:57,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:57,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:57,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:15:57,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:57,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:57,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:57,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 03:15:57,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:57,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-28 03:15:57,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:57,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-28 03:15:57,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:57,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-28 03:15:57,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:57,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-28 03:15:57,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:57,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-28 03:15:57,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:57,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-28 03:15:57,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:57,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-28 03:15:57,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:57,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-28 03:15:57,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:57,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-28 03:15:57,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:57,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-28 03:15:57,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:57,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-28 03:15:57,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:57,881 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2021-12-28 03:15:57,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:15:57,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519316329] [2021-12-28 03:15:57,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519316329] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:15:57,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708803605] [2021-12-28 03:15:57,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:15:57,882 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:15:57,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:15:57,896 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:15:57,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-28 03:15:58,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:58,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 3145 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 03:15:58,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:15:58,658 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-12-28 03:15:58,658 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:15:58,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708803605] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:15:58,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:15:58,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2021-12-28 03:15:58,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202852297] [2021-12-28 03:15:58,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:15:58,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:15:58,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:15:58,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:15:58,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-28 03:15:58,660 INFO L87 Difference]: Start difference. First operand 255 states and 348 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-28 03:15:58,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:15:58,683 INFO L93 Difference]: Finished difference Result 507 states and 704 transitions. [2021-12-28 03:15:58,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:15:58,683 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 226 [2021-12-28 03:15:58,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:15:58,685 INFO L225 Difference]: With dead ends: 507 [2021-12-28 03:15:58,685 INFO L226 Difference]: Without dead ends: 267 [2021-12-28 03:15:58,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:15:58,686 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 26 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:15:58,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 723 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:15:58,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-12-28 03:15:58,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 247. [2021-12-28 03:15:58,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 163 states have (on average 1.1717791411042944) internal successors, (191), 166 states have internal predecessors, (191), 62 states have call successors, (62), 20 states have call predecessors, (62), 21 states have return successors, (77), 61 states have call predecessors, (77), 61 states have call successors, (77) [2021-12-28 03:15:58,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 330 transitions. [2021-12-28 03:15:58,730 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 330 transitions. Word has length 226 [2021-12-28 03:15:58,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:15:58,731 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 330 transitions. [2021-12-28 03:15:58,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-28 03:15:58,731 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 330 transitions. [2021-12-28 03:15:58,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-12-28 03:15:58,732 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:15:58,732 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:15:58,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-28 03:15:58,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-28 03:15:58,953 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:15:58,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:15:58,954 INFO L85 PathProgramCache]: Analyzing trace with hash 220629245, now seen corresponding path program 2 times [2021-12-28 03:15:58,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:15:58,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790719868] [2021-12-28 03:15:58,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:15:58,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:15:59,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:59,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:15:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:59,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:15:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:59,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:15:59,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:59,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 03:15:59,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:59,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:15:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:59,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-28 03:15:59,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:59,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:15:59,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:59,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:59,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:59,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:15:59,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:59,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:59,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:59,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:15:59,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:59,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-28 03:15:59,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:59,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 03:15:59,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:59,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 03:15:59,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:59,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 03:15:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:59,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:59,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:59,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:15:59,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:59,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:15:59,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:59,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 03:15:59,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:59,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-28 03:15:59,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:59,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-28 03:15:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:59,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-28 03:15:59,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:59,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-28 03:15:59,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:59,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-28 03:15:59,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:59,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-28 03:15:59,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:59,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-28 03:15:59,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:59,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-28 03:15:59,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:59,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-28 03:15:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:59,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-28 03:15:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:59,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-28 03:15:59,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:15:59,290 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 20 proven. 29 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2021-12-28 03:15:59,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:15:59,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790719868] [2021-12-28 03:15:59,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790719868] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:15:59,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495785517] [2021-12-28 03:15:59,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 03:15:59,291 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:15:59,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:15:59,292 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:15:59,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-28 03:16:00,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 03:16:00,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:16:00,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 3140 conjuncts, 56 conjunts are in the unsatisfiable core [2021-12-28 03:16:00,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:16:00,268 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-28 03:16:00,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:16:00,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:16:00,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:16:00,498 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 32 [2021-12-28 03:16:00,499 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2021-12-28 03:16:00,894 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 286 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-28 03:16:00,894 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:16:00,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495785517] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:16:00,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:16:00,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [12] total 26 [2021-12-28 03:16:00,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536953313] [2021-12-28 03:16:00,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:16:00,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-28 03:16:00,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:16:00,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-28 03:16:00,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=584, Unknown=0, NotChecked=0, Total=650 [2021-12-28 03:16:00,896 INFO L87 Difference]: Start difference. First operand 247 states and 330 transitions. Second operand has 16 states, 15 states have (on average 7.466666666666667) internal successors, (112), 15 states have internal predecessors, (112), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) [2021-12-28 03:16:01,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:16:01,610 INFO L93 Difference]: Finished difference Result 512 states and 702 transitions. [2021-12-28 03:16:01,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-28 03:16:01,611 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 7.466666666666667) internal successors, (112), 15 states have internal predecessors, (112), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) Word has length 226 [2021-12-28 03:16:01,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:16:01,613 INFO L225 Difference]: With dead ends: 512 [2021-12-28 03:16:01,613 INFO L226 Difference]: Without dead ends: 335 [2021-12-28 03:16:01,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 264 SyntacticMatches, 8 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=106, Invalid=1016, Unknown=0, NotChecked=0, Total=1122 [2021-12-28 03:16:01,614 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 116 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 1244 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 1842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 512 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-28 03:16:01,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 1269 Invalid, 1842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1244 Invalid, 0 Unknown, 512 Unchecked, 0.6s Time] [2021-12-28 03:16:01,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2021-12-28 03:16:01,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 287. [2021-12-28 03:16:01,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 193 states have (on average 1.160621761658031) internal successors, (224), 197 states have internal predecessors, (224), 68 states have call successors, (68), 23 states have call predecessors, (68), 25 states have return successors, (93), 67 states have call predecessors, (93), 67 states have call successors, (93) [2021-12-28 03:16:01,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 385 transitions. [2021-12-28 03:16:01,626 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 385 transitions. Word has length 226 [2021-12-28 03:16:01,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:16:01,626 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 385 transitions. [2021-12-28 03:16:01,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 7.466666666666667) internal successors, (112), 15 states have internal predecessors, (112), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) [2021-12-28 03:16:01,627 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 385 transitions. [2021-12-28 03:16:01,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-12-28 03:16:01,628 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:16:01,628 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:16:01,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-28 03:16:01,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-28 03:16:01,850 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:16:01,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:16:01,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1947774207, now seen corresponding path program 3 times [2021-12-28 03:16:01,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:16:01,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833874410] [2021-12-28 03:16:01,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:16:01,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:16:02,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:02,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:16:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:02,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:16:02,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:02,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:16:02,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:02,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 03:16:02,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:02,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:16:02,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:02,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-28 03:16:02,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:02,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:16:02,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:02,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:02,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:02,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:16:02,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:02,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:02,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:02,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:16:02,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:02,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-28 03:16:02,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:02,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 03:16:02,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:02,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 03:16:02,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:02,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 03:16:02,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:02,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:02,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:02,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:16:02,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:02,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:02,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:02,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 03:16:02,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:02,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-28 03:16:02,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:02,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-28 03:16:02,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:02,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-28 03:16:02,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:02,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-28 03:16:02,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:02,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-28 03:16:02,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:02,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-28 03:16:02,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:02,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-28 03:16:02,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:02,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-28 03:16:02,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:02,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-28 03:16:02,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:02,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-28 03:16:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:02,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-28 03:16:02,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:02,654 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 23 proven. 47 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2021-12-28 03:16:02,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:16:02,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833874410] [2021-12-28 03:16:02,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833874410] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:16:02,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384409763] [2021-12-28 03:16:02,655 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-28 03:16:02,656 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:16:02,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:16:02,657 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:16:02,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-28 03:16:03,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-28 03:16:03,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:16:03,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 2570 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-28 03:16:03,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:16:04,298 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 161 proven. 6 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-12-28 03:16:04,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:16:04,689 INFO L353 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-12-28 03:16:04,690 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 19 [2021-12-28 03:16:04,930 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 88 proven. 10 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-12-28 03:16:04,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384409763] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:16:04,931 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 03:16:04,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 12, 11] total 35 [2021-12-28 03:16:04,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110715044] [2021-12-28 03:16:04,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 03:16:04,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-12-28 03:16:04,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:16:04,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-12-28 03:16:04,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1076, Unknown=0, NotChecked=0, Total=1190 [2021-12-28 03:16:04,934 INFO L87 Difference]: Start difference. First operand 287 states and 385 transitions. Second operand has 35 states, 33 states have (on average 4.333333333333333) internal successors, (143), 30 states have internal predecessors, (143), 8 states have call successors, (58), 6 states have call predecessors, (58), 9 states have return successors, (54), 8 states have call predecessors, (54), 8 states have call successors, (54) [2021-12-28 03:16:08,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:16:08,552 INFO L93 Difference]: Finished difference Result 607 states and 895 transitions. [2021-12-28 03:16:08,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-28 03:16:08,552 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 4.333333333333333) internal successors, (143), 30 states have internal predecessors, (143), 8 states have call successors, (58), 6 states have call predecessors, (58), 9 states have return successors, (54), 8 states have call predecessors, (54), 8 states have call successors, (54) Word has length 226 [2021-12-28 03:16:08,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:16:08,555 INFO L225 Difference]: With dead ends: 607 [2021-12-28 03:16:08,555 INFO L226 Difference]: Without dead ends: 417 [2021-12-28 03:16:08,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 499 SyntacticMatches, 7 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 874 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=431, Invalid=3475, Unknown=0, NotChecked=0, Total=3906 [2021-12-28 03:16:08,559 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 412 mSDsluCounter, 2842 mSDsCounter, 0 mSdLazyCounter, 5016 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 3152 SdHoareTripleChecker+Invalid, 6815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 5016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1425 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-28 03:16:08,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [477 Valid, 3152 Invalid, 6815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [374 Valid, 5016 Invalid, 0 Unknown, 1425 Unchecked, 2.6s Time] [2021-12-28 03:16:08,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2021-12-28 03:16:08,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 304. [2021-12-28 03:16:08,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 205 states have (on average 1.146341463414634) internal successors, (235), 211 states have internal predecessors, (235), 71 states have call successors, (71), 23 states have call predecessors, (71), 27 states have return successors, (114), 70 states have call predecessors, (114), 70 states have call successors, (114) [2021-12-28 03:16:08,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 420 transitions. [2021-12-28 03:16:08,585 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 420 transitions. Word has length 226 [2021-12-28 03:16:08,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:16:08,586 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 420 transitions. [2021-12-28 03:16:08,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 4.333333333333333) internal successors, (143), 30 states have internal predecessors, (143), 8 states have call successors, (58), 6 states have call predecessors, (58), 9 states have return successors, (54), 8 states have call predecessors, (54), 8 states have call successors, (54) [2021-12-28 03:16:08,586 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 420 transitions. [2021-12-28 03:16:08,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-12-28 03:16:08,588 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:16:08,588 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:16:08,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-28 03:16:08,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-28 03:16:08,809 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:16:08,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:16:08,809 INFO L85 PathProgramCache]: Analyzing trace with hash -133423481, now seen corresponding path program 1 times [2021-12-28 03:16:08,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:16:08,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785962046] [2021-12-28 03:16:08,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:16:08,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:16:08,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:09,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:16:09,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:09,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:16:09,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:09,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:16:09,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:09,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 03:16:09,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:09,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:16:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:09,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-28 03:16:09,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:09,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:16:09,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:09,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:09,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:09,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:16:09,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:09,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:09,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:09,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:16:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:09,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-28 03:16:09,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:09,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 03:16:09,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:09,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 03:16:09,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:09,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 03:16:09,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:09,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:09,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:09,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:16:09,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:09,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:09,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:09,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 03:16:09,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:09,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-28 03:16:09,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:09,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-28 03:16:09,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:09,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-28 03:16:09,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:09,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-28 03:16:09,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:09,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-28 03:16:09,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:09,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-28 03:16:09,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:09,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-28 03:16:09,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:09,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-28 03:16:09,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:09,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-28 03:16:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:09,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-28 03:16:09,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:09,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-28 03:16:09,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:09,432 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 23 proven. 47 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2021-12-28 03:16:09,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:16:09,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785962046] [2021-12-28 03:16:09,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785962046] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:16:09,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351020426] [2021-12-28 03:16:09,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:16:09,433 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:16:09,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:16:09,434 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:16:09,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-28 03:16:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:09,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 3139 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-28 03:16:09,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:16:10,310 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-12-28 03:16:10,310 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:16:10,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351020426] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:16:10,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:16:10,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [20] total 27 [2021-12-28 03:16:10,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983196583] [2021-12-28 03:16:10,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:16:10,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 03:16:10,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:16:10,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 03:16:10,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=643, Unknown=0, NotChecked=0, Total=702 [2021-12-28 03:16:10,311 INFO L87 Difference]: Start difference. First operand 304 states and 420 transitions. Second operand has 9 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-12-28 03:16:10,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:16:10,409 INFO L93 Difference]: Finished difference Result 531 states and 724 transitions. [2021-12-28 03:16:10,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 03:16:10,409 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 226 [2021-12-28 03:16:10,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:16:10,411 INFO L225 Difference]: With dead ends: 531 [2021-12-28 03:16:10,411 INFO L226 Difference]: Without dead ends: 267 [2021-12-28 03:16:10,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=797, Unknown=0, NotChecked=0, Total=870 [2021-12-28 03:16:10,413 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 12 mSDsluCounter, 1553 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1782 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:16:10,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1782 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:16:10,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-12-28 03:16:10,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 242. [2021-12-28 03:16:10,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 158 states have (on average 1.1582278481012658) internal successors, (183), 161 states have internal predecessors, (183), 62 states have call successors, (62), 20 states have call predecessors, (62), 21 states have return successors, (76), 61 states have call predecessors, (76), 61 states have call successors, (76) [2021-12-28 03:16:10,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 321 transitions. [2021-12-28 03:16:10,437 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 321 transitions. Word has length 226 [2021-12-28 03:16:10,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:16:10,438 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 321 transitions. [2021-12-28 03:16:10,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-12-28 03:16:10,438 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 321 transitions. [2021-12-28 03:16:10,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-12-28 03:16:10,439 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:16:10,439 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:16:10,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-28 03:16:10,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:16:10,640 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:16:10,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:16:10,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1037491156, now seen corresponding path program 2 times [2021-12-28 03:16:10,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:16:10,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641945116] [2021-12-28 03:16:10,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:16:10,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:16:11,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:11,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:16:11,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:11,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:16:11,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:11,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:16:11,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:11,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 03:16:11,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:11,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:16:11,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:11,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-28 03:16:11,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:11,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:16:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:11,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:11,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:11,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:16:11,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:11,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:11,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:16:11,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:11,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-28 03:16:11,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:11,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 03:16:11,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:11,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 03:16:11,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:11,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 03:16:11,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:11,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:11,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:11,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:16:11,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:11,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:11,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:11,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 03:16:11,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:11,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-28 03:16:11,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:11,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-28 03:16:11,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:11,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-28 03:16:11,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:11,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-28 03:16:11,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:11,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-28 03:16:11,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:11,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-28 03:16:11,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:11,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-28 03:16:11,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:11,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-28 03:16:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:11,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-28 03:16:11,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:11,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-28 03:16:11,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:11,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-28 03:16:11,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:11,542 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 60 proven. 20 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2021-12-28 03:16:11,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:16:11,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641945116] [2021-12-28 03:16:11,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641945116] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:16:11,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264333430] [2021-12-28 03:16:11,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 03:16:11,544 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:16:11,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:16:11,560 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:16:11,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-28 03:16:12,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 03:16:12,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:16:12,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 3144 conjuncts, 44 conjunts are in the unsatisfiable core [2021-12-28 03:16:12,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:16:12,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:16:12,581 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 23 [2021-12-28 03:16:12,583 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2021-12-28 03:16:13,060 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 272 proven. 18 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-12-28 03:16:13,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:16:13,316 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2021-12-28 03:16:13,652 INFO L353 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-12-28 03:16:13,652 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2021-12-28 03:16:13,749 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 36 proven. 64 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-12-28 03:16:13,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264333430] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:16:13,750 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 03:16:13,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 11] total 32 [2021-12-28 03:16:13,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463273867] [2021-12-28 03:16:13,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 03:16:13,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-28 03:16:13,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:16:13,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-28 03:16:13,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=897, Unknown=0, NotChecked=0, Total=992 [2021-12-28 03:16:13,753 INFO L87 Difference]: Start difference. First operand 242 states and 321 transitions. Second operand has 32 states, 30 states have (on average 5.633333333333334) internal successors, (169), 27 states have internal predecessors, (169), 11 states have call successors, (65), 9 states have call predecessors, (65), 9 states have return successors, (60), 9 states have call predecessors, (60), 10 states have call successors, (60) [2021-12-28 03:16:17,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:16:17,921 INFO L93 Difference]: Finished difference Result 587 states and 809 transitions. [2021-12-28 03:16:17,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-12-28 03:16:17,922 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 5.633333333333334) internal successors, (169), 27 states have internal predecessors, (169), 11 states have call successors, (65), 9 states have call predecessors, (65), 9 states have return successors, (60), 9 states have call predecessors, (60), 10 states have call successors, (60) Word has length 228 [2021-12-28 03:16:17,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:16:17,925 INFO L225 Difference]: With dead ends: 587 [2021-12-28 03:16:17,925 INFO L226 Difference]: Without dead ends: 415 [2021-12-28 03:16:17,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 497 SyntacticMatches, 7 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=513, Invalid=3777, Unknown=0, NotChecked=0, Total=4290 [2021-12-28 03:16:17,928 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 371 mSDsluCounter, 1838 mSDsCounter, 0 mSdLazyCounter, 5663 mSolverCounterSat, 301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 2102 SdHoareTripleChecker+Invalid, 7140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 301 IncrementalHoareTripleChecker+Valid, 5663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1176 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:16:17,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [424 Valid, 2102 Invalid, 7140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [301 Valid, 5663 Invalid, 0 Unknown, 1176 Unchecked, 3.1s Time] [2021-12-28 03:16:17,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2021-12-28 03:16:17,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 346. [2021-12-28 03:16:17,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 234 states have (on average 1.1623931623931625) internal successors, (272), 241 states have internal predecessors, (272), 81 states have call successors, (81), 24 states have call predecessors, (81), 30 states have return successors, (123), 81 states have call predecessors, (123), 80 states have call successors, (123) [2021-12-28 03:16:17,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 476 transitions. [2021-12-28 03:16:17,947 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 476 transitions. Word has length 228 [2021-12-28 03:16:17,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:16:17,947 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 476 transitions. [2021-12-28 03:16:17,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 5.633333333333334) internal successors, (169), 27 states have internal predecessors, (169), 11 states have call successors, (65), 9 states have call predecessors, (65), 9 states have return successors, (60), 9 states have call predecessors, (60), 10 states have call successors, (60) [2021-12-28 03:16:17,948 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 476 transitions. [2021-12-28 03:16:17,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-12-28 03:16:17,949 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:16:17,949 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:16:17,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-28 03:16:18,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-28 03:16:18,163 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:16:18,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:16:18,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1164886158, now seen corresponding path program 4 times [2021-12-28 03:16:18,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:16:18,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635641721] [2021-12-28 03:16:18,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:16:18,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:16:18,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:16:18,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:16:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:16:18,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 03:16:18,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:16:18,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-28 03:16:18,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:16:18,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:18,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:16:18,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:18,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:16:18,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-28 03:16:18,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 03:16:18,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 03:16:18,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 03:16:18,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:18,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:16:18,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:18,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 03:16:18,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-28 03:16:18,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-28 03:16:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-28 03:16:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-28 03:16:18,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-28 03:16:18,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-28 03:16:18,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-12-28 03:16:18,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-28 03:16:18,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-28 03:16:18,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-28 03:16:18,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-12-28 03:16:18,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:18,591 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 35 proven. 15 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2021-12-28 03:16:18,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:16:18,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635641721] [2021-12-28 03:16:18,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635641721] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:16:18,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701264847] [2021-12-28 03:16:18,592 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-28 03:16:18,593 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:16:18,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:16:18,594 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:16:18,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-28 03:16:19,158 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-28 03:16:19,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:16:19,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 3151 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-28 03:16:19,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:16:19,529 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 199 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2021-12-28 03:16:19,530 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:16:19,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701264847] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:16:19,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:16:19,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 13 [2021-12-28 03:16:19,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138585830] [2021-12-28 03:16:19,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:16:19,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 03:16:19,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:16:19,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 03:16:19,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-28 03:16:19,532 INFO L87 Difference]: Start difference. First operand 346 states and 476 transitions. Second operand has 9 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-12-28 03:16:19,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:16:19,685 INFO L93 Difference]: Finished difference Result 547 states and 738 transitions. [2021-12-28 03:16:19,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 03:16:19,686 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 232 [2021-12-28 03:16:19,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:16:19,688 INFO L225 Difference]: With dead ends: 547 [2021-12-28 03:16:19,688 INFO L226 Difference]: Without dead ends: 361 [2021-12-28 03:16:19,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 288 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-12-28 03:16:19,689 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 12 mSDsluCounter, 1550 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:16:19,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1779 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:16:19,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2021-12-28 03:16:19,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 347. [2021-12-28 03:16:19,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 235 states have (on average 1.1617021276595745) internal successors, (273), 242 states have internal predecessors, (273), 81 states have call successors, (81), 24 states have call predecessors, (81), 30 states have return successors, (120), 81 states have call predecessors, (120), 80 states have call successors, (120) [2021-12-28 03:16:19,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 474 transitions. [2021-12-28 03:16:19,705 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 474 transitions. Word has length 232 [2021-12-28 03:16:19,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:16:19,705 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 474 transitions. [2021-12-28 03:16:19,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-12-28 03:16:19,706 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 474 transitions. [2021-12-28 03:16:19,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-12-28 03:16:19,707 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:16:19,707 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:16:19,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-12-28 03:16:19,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-28 03:16:19,924 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:16:19,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:16:19,924 INFO L85 PathProgramCache]: Analyzing trace with hash -233712675, now seen corresponding path program 3 times [2021-12-28 03:16:19,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:16:19,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107540475] [2021-12-28 03:16:19,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:16:19,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:16:20,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:16:20,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:16:20,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:16:20,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 03:16:20,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:16:20,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-28 03:16:20,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:16:20,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:20,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:16:20,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:20,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 03:16:20,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-28 03:16:20,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 03:16:20,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 03:16:20,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 03:16:20,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:16:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:16:20,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 03:16:20,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-28 03:16:20,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-28 03:16:20,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-28 03:16:20,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-28 03:16:20,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-28 03:16:20,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-28 03:16:20,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-28 03:16:20,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-28 03:16:20,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-28 03:16:20,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-28 03:16:20,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-12-28 03:16:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:16:20,589 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 92 proven. 8 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2021-12-28 03:16:20,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:16:20,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107540475] [2021-12-28 03:16:20,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107540475] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:16:20,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133694199] [2021-12-28 03:16:20,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-28 03:16:20,590 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:16:20,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:16:20,591 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:16:20,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-28 03:16:21,644 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-28 03:16:21,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:16:21,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 2572 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-28 03:16:21,657 INFO L286 TraceCheckSpWp]: Computing forward predicates...