./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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_append_dynamic_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b1e17fda858e874821809b4efef78fd91cf6fdf1723d3ff0faf91ee901e13b86 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 15:29:10,416 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 15:29:10,417 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 15:29:10,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 15:29:10,454 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 15:29:10,455 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 15:29:10,463 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 15:29:10,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 15:29:10,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 15:29:10,465 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 15:29:10,466 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 15:29:10,467 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 15:29:10,467 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 15:29:10,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 15:29:10,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 15:29:10,475 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 15:29:10,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 15:29:10,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 15:29:10,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 15:29:10,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 15:29:10,483 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 15:29:10,483 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 15:29:10,484 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 15:29:10,485 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 15:29:10,490 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 15:29:10,491 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 15:29:10,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 15:29:10,492 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 15:29:10,492 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 15:29:10,493 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 15:29:10,493 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 15:29:10,494 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 15:29:10,495 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 15:29:10,496 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 15:29:10,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 15:29:10,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 15:29:10,497 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 15:29:10,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 15:29:10,498 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 15:29:10,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 15:29:10,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 15:29:10,500 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-21 15:29:10,526 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 15:29:10,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 15:29:10,526 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 15:29:10,527 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 15:29:10,527 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 15:29:10,527 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 15:29:10,528 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 15:29:10,528 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 15:29:10,528 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 15:29:10,528 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 15:29:10,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 15:29:10,529 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 15:29:10,529 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 15:29:10,529 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 15:29:10,530 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 15:29:10,530 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 15:29:10,530 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 15:29:10,530 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 15:29:10,530 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 15:29:10,530 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 15:29:10,530 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 15:29:10,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:29:10,531 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 15:29:10,531 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 15:29:10,531 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 15:29:10,531 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 15:29:10,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 15:29:10,532 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 15:29:10,532 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 15:29:10,532 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 15:29:10,532 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 15:29:10,533 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1e17fda858e874821809b4efef78fd91cf6fdf1723d3ff0faf91ee901e13b86 [2021-12-21 15:29:10,693 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 15:29:10,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 15:29:10,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 15:29:10,708 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 15:29:10,708 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 15:29:10,709 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i [2021-12-21 15:29:10,777 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d209a2651/4c9f435c4fa5416b94424ed522d9abe7/FLAG782952eb6 [2021-12-21 15:29:11,396 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 15:29:11,397 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i [2021-12-21 15:29:11,430 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d209a2651/4c9f435c4fa5416b94424ed522d9abe7/FLAG782952eb6 [2021-12-21 15:29:11,575 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d209a2651/4c9f435c4fa5416b94424ed522d9abe7 [2021-12-21 15:29:11,577 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 15:29:11,578 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 15:29:11,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 15:29:11,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 15:29:11,583 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 15:29:11,584 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:29:11" (1/1) ... [2021-12-21 15:29:11,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@680ab507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:29:11, skipping insertion in model container [2021-12-21 15:29:11,585 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:29:11" (1/1) ... [2021-12-21 15:29:11,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 15:29:11,679 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 15:29:11,859 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_append_dynamic_harness.i[4501,4514] [2021-12-21 15:29:11,863 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_append_dynamic_harness.i[4561,4574] [2021-12-21 15:29:12,396 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:12,400 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:12,402 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:12,403 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:12,405 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:12,419 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:12,428 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:12,429 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:12,430 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:12,642 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-21 15:29:12,645 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-21 15:29:12,652 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-21 15:29:12,653 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-21 15:29:12,654 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-21 15:29:12,654 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-21 15:29:12,654 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-21 15:29:12,655 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-21 15:29:12,655 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-21 15:29:12,656 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-21 15:29:12,765 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-21 15:29:12,779 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:12,780 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:12,836 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:12,836 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:12,880 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:29:12,909 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 15:29:12,926 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_append_dynamic_harness.i[4501,4514] [2021-12-21 15:29:12,931 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_append_dynamic_harness.i[4561,4574] [2021-12-21 15:29:12,952 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:12,953 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:12,953 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:12,953 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:12,954 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:12,957 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:12,958 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:12,958 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:12,959 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:12,977 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-21 15:29:12,978 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-21 15:29:12,978 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-21 15:29:12,979 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-21 15:29:12,979 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-21 15:29:12,979 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-21 15:29:12,980 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-21 15:29:12,980 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-21 15:29:12,980 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-21 15:29:12,981 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-21 15:29:12,992 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-21 15:29:13,000 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:13,000 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:13,022 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:13,022 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:29:13,038 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:29:13,203 INFO L208 MainTranslator]: Completed translation [2021-12-21 15:29:13,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:29:13 WrapperNode [2021-12-21 15:29:13,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 15:29:13,204 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 15:29:13,205 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 15:29:13,205 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 15:29:13,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:29:13" (1/1) ... [2021-12-21 15:29:13,301 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:29:13" (1/1) ... [2021-12-21 15:29:13,364 INFO L137 Inliner]: procedures = 691, calls = 2637, calls flagged for inlining = 61, calls inlined = 11, statements flattened = 1065 [2021-12-21 15:29:13,364 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 15:29:13,365 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 15:29:13,365 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 15:29:13,365 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 15:29:13,371 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:29:13" (1/1) ... [2021-12-21 15:29:13,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:29:13" (1/1) ... [2021-12-21 15:29:13,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:29:13" (1/1) ... [2021-12-21 15:29:13,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:29:13" (1/1) ... [2021-12-21 15:29:13,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:29:13" (1/1) ... [2021-12-21 15:29:13,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:29:13" (1/1) ... [2021-12-21 15:29:13,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:29:13" (1/1) ... [2021-12-21 15:29:13,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 15:29:13,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 15:29:13,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 15:29:13,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 15:29:13,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:29:13" (1/1) ... [2021-12-21 15:29:13,461 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:29:13,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:29:13,503 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) [2021-12-21 15:29:13,534 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 [2021-12-21 15:29:13,563 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-12-21 15:29:13,563 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-12-21 15:29:13,564 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-12-21 15:29:13,564 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-12-21 15:29:13,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 15:29:13,564 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-21 15:29:13,565 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-21 15:29:13,565 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-12-21 15:29:13,565 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-12-21 15:29:13,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 15:29:13,566 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-21 15:29:13,566 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-21 15:29:13,566 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-21 15:29:13,566 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-21 15:29:13,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 15:29:13,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 15:29:13,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 15:29:13,567 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-12-21 15:29:13,567 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-12-21 15:29:13,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 15:29:13,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 15:29:13,568 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-21 15:29:13,568 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-21 15:29:13,568 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-12-21 15:29:13,569 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-12-21 15:29:13,569 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2021-12-21 15:29:13,569 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2021-12-21 15:29:13,570 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-21 15:29:13,570 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-21 15:29:13,570 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-12-21 15:29:13,570 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-12-21 15:29:13,570 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2021-12-21 15:29:13,570 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2021-12-21 15:29:13,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 15:29:13,570 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-12-21 15:29:13,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-12-21 15:29:13,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 15:29:13,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 15:29:13,571 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-21 15:29:13,571 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-21 15:29:13,571 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-12-21 15:29:13,572 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-12-21 15:29:13,572 INFO L130 BoogieDeclarations]: Found specification of procedure assert_bytes_match [2021-12-21 15:29:13,572 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_bytes_match [2021-12-21 15:29:13,572 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-21 15:29:13,572 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-21 15:29:13,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 15:29:13,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 15:29:13,834 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 15:29:13,835 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 15:29:14,668 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 15:29:14,674 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 15:29:14,675 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-21 15:29:14,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:29:14 BoogieIcfgContainer [2021-12-21 15:29:14,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 15:29:14,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 15:29:14,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 15:29:14,681 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 15:29:14,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 03:29:11" (1/3) ... [2021-12-21 15:29:14,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ce68578 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:29:14, skipping insertion in model container [2021-12-21 15:29:14,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:29:13" (2/3) ... [2021-12-21 15:29:14,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ce68578 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:29:14, skipping insertion in model container [2021-12-21 15:29:14,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:29:14" (3/3) ... [2021-12-21 15:29:14,683 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_dynamic_harness.i [2021-12-21 15:29:14,687 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 15:29:14,688 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 15:29:14,721 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 15:29:14,726 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 [2021-12-21 15:29:14,726 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 15:29:14,740 INFO L276 IsEmpty]: Start isEmpty. Operand has 248 states, 156 states have (on average 1.2371794871794872) internal successors, (193), 157 states have internal predecessors, (193), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2021-12-21 15:29:14,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-12-21 15:29:14,745 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:29:14,746 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-12-21 15:29:14,746 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:29:14,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:29:14,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1072542744, now seen corresponding path program 1 times [2021-12-21 15:29:14,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:29:14,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157815864] [2021-12-21 15:29:14,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:14,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:29:15,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:15,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:29:15,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:15,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 15:29:15,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:15,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:29:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:15,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:29:15,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:15,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 15:29:15,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:15,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 15:29:15,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:15,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 15:29:15,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:15,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 15:29:15,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:15,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 15:29:15,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:15,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-21 15:29:15,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:15,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 15:29:15,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:15,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 15:29:15,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:15,253 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-12-21 15:29:15,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:29:15,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157815864] [2021-12-21 15:29:15,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157815864] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:29:15,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:29:15,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 15:29:15,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855061864] [2021-12-21 15:29:15,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:29:15,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 15:29:15,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:29:15,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 15:29:15,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 15:29:15,277 INFO L87 Difference]: Start difference. First operand has 248 states, 156 states have (on average 1.2371794871794872) internal successors, (193), 157 states have internal predecessors, (193), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-21 15:29:15,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:29:15,523 INFO L93 Difference]: Finished difference Result 500 states and 722 transitions. [2021-12-21 15:29:15,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 15:29:15,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 83 [2021-12-21 15:29:15,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:29:15,532 INFO L225 Difference]: With dead ends: 500 [2021-12-21 15:29:15,532 INFO L226 Difference]: Without dead ends: 255 [2021-12-21 15:29:15,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 15:29:15,538 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 97 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 15:29:15,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 405 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 15:29:15,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-12-21 15:29:15,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 243. [2021-12-21 15:29:15,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 152 states have (on average 1.2171052631578947) internal successors, (185), 153 states have internal predecessors, (185), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2021-12-21 15:29:15,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 328 transitions. [2021-12-21 15:29:15,577 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 328 transitions. Word has length 83 [2021-12-21 15:29:15,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:29:15,577 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 328 transitions. [2021-12-21 15:29:15,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-21 15:29:15,577 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 328 transitions. [2021-12-21 15:29:15,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-21 15:29:15,580 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:29:15,580 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-12-21 15:29:15,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 15:29:15,581 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:29:15,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:29:15,581 INFO L85 PathProgramCache]: Analyzing trace with hash -2014404208, now seen corresponding path program 1 times [2021-12-21 15:29:15,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:29:15,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119726516] [2021-12-21 15:29:15,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:15,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:29:15,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:15,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:29:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:15,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 15:29:15,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:15,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:29:15,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:15,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:29:15,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:15,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 15:29:15,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:15,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 15:29:15,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:15,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 15:29:15,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:15,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 15:29:15,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:15,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 15:29:15,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:15,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-21 15:29:15,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:15,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 15:29:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:15,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 15:29:15,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:15,829 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-12-21 15:29:15,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:29:15,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119726516] [2021-12-21 15:29:15,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119726516] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:29:15,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186485861] [2021-12-21 15:29:15,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:15,830 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:29:15,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:29:15,850 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) [2021-12-21 15:29:15,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 15:29:16,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:16,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 2568 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-21 15:29:16,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:29:16,591 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-21 15:29:16,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:29:16,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186485861] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:29:16,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:29:16,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2021-12-21 15:29:16,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787659801] [2021-12-21 15:29:16,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:29:16,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:29:16,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:29:16,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:29:16,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-21 15:29:16,596 INFO L87 Difference]: Start difference. First operand 243 states and 328 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-21 15:29:16,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:29:16,863 INFO L93 Difference]: Finished difference Result 478 states and 649 transitions. [2021-12-21 15:29:16,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 15:29:16,863 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 85 [2021-12-21 15:29:16,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:29:16,865 INFO L225 Difference]: With dead ends: 478 [2021-12-21 15:29:16,865 INFO L226 Difference]: Without dead ends: 246 [2021-12-21 15:29:16,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-12-21 15:29:16,867 INFO L933 BasicCegarLoop]: 267 mSDtfsCounter, 371 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 15:29:16,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 965 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 15:29:16,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-12-21 15:29:16,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2021-12-21 15:29:16,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 154 states have (on average 1.2142857142857142) internal successors, (187), 156 states have internal predecessors, (187), 72 states have call successors, (72), 18 states have call predecessors, (72), 19 states have return successors, (76), 71 states have call predecessors, (76), 71 states have call successors, (76) [2021-12-21 15:29:16,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 335 transitions. [2021-12-21 15:29:16,883 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 335 transitions. Word has length 85 [2021-12-21 15:29:16,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:29:16,884 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 335 transitions. [2021-12-21 15:29:16,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-21 15:29:16,884 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 335 transitions. [2021-12-21 15:29:16,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-21 15:29:16,886 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:29:16,886 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-12-21 15:29:16,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-21 15:29:17,107 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 [2021-12-21 15:29:17,108 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:29:17,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:29:17,109 INFO L85 PathProgramCache]: Analyzing trace with hash -756708827, now seen corresponding path program 1 times [2021-12-21 15:29:17,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:29:17,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164728919] [2021-12-21 15:29:17,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:17,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:29:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:17,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:29:17,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:17,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 15:29:17,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:17,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:29:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:17,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:29:17,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:17,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 15:29:17,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:17,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 15:29:17,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:17,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 15:29:17,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:17,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 15:29:17,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:17,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-21 15:29:17,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:17,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 15:29:17,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:17,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 15:29:17,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:17,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 15:29:17,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:17,372 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-12-21 15:29:17,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:29:17,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164728919] [2021-12-21 15:29:17,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164728919] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:29:17,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132010953] [2021-12-21 15:29:17,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:17,373 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:29:17,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:29:17,374 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) [2021-12-21 15:29:17,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 15:29:17,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:17,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 2585 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 15:29:17,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:29:17,966 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-21 15:29:17,966 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:29:17,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132010953] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:29:17,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:29:17,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2021-12-21 15:29:17,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741186779] [2021-12-21 15:29:17,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:29:17,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 15:29:17,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:29:17,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 15:29:17,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-21 15:29:17,968 INFO L87 Difference]: Start difference. First operand 246 states and 335 transitions. Second operand has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-21 15:29:18,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:29:18,280 INFO L93 Difference]: Finished difference Result 469 states and 634 transitions. [2021-12-21 15:29:18,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 15:29:18,280 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 91 [2021-12-21 15:29:18,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:29:18,283 INFO L225 Difference]: With dead ends: 469 [2021-12-21 15:29:18,283 INFO L226 Difference]: Without dead ends: 243 [2021-12-21 15:29:18,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-12-21 15:29:18,284 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 429 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 1136 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 15:29:18,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [429 Valid, 1136 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 15:29:18,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-12-21 15:29:18,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2021-12-21 15:29:18,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 152 states have (on average 1.2105263157894737) internal successors, (184), 153 states have internal predecessors, (184), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2021-12-21 15:29:18,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 327 transitions. [2021-12-21 15:29:18,308 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 327 transitions. Word has length 91 [2021-12-21 15:29:18,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:29:18,308 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 327 transitions. [2021-12-21 15:29:18,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-21 15:29:18,317 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 327 transitions. [2021-12-21 15:29:18,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-21 15:29:18,319 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:29:18,319 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-12-21 15:29:18,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-21 15:29:18,525 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 [2021-12-21 15:29:18,529 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:29:18,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:29:18,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1459419536, now seen corresponding path program 1 times [2021-12-21 15:29:18,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:29:18,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986136552] [2021-12-21 15:29:18,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:18,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:29:18,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:18,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:29:18,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:18,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 15:29:18,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:18,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:29:18,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:18,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:29:18,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:18,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 15:29:18,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:18,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 15:29:18,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:18,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 15:29:18,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:18,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 15:29:18,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:18,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-21 15:29:18,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:18,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 15:29:18,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:18,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 15:29:18,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:18,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 15:29:18,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:18,739 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-21 15:29:18,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:29:18,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986136552] [2021-12-21 15:29:18,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986136552] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:29:18,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612548031] [2021-12-21 15:29:18,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:18,739 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:29:18,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:29:18,756 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) [2021-12-21 15:29:18,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 15:29:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:19,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 2602 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-21 15:29:19,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:29:19,426 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 40 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-21 15:29:19,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:29:19,626 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-21 15:29:19,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612548031] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:29:19,627 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 15:29:19,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2021-12-21 15:29:19,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351219394] [2021-12-21 15:29:19,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 15:29:19,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-21 15:29:19,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:29:19,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-21 15:29:19,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-12-21 15:29:19,630 INFO L87 Difference]: Start difference. First operand 243 states and 327 transitions. Second operand has 12 states, 12 states have (on average 9.0) internal successors, (108), 11 states have internal predecessors, (108), 7 states have call successors, (31), 4 states have call predecessors, (31), 5 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) [2021-12-21 15:29:20,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:29:20,175 INFO L93 Difference]: Finished difference Result 481 states and 648 transitions. [2021-12-21 15:29:20,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 15:29:20,175 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.0) internal successors, (108), 11 states have internal predecessors, (108), 7 states have call successors, (31), 4 states have call predecessors, (31), 5 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) Word has length 97 [2021-12-21 15:29:20,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:29:20,177 INFO L225 Difference]: With dead ends: 481 [2021-12-21 15:29:20,177 INFO L226 Difference]: Without dead ends: 258 [2021-12-21 15:29:20,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-12-21 15:29:20,179 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 456 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-21 15:29:20,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [459 Valid, 772 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-21 15:29:20,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-12-21 15:29:20,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 246. [2021-12-21 15:29:20,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 154 states have (on average 1.2077922077922079) internal successors, (186), 156 states have internal predecessors, (186), 72 states have call successors, (72), 18 states have call predecessors, (72), 19 states have return successors, (76), 71 states have call predecessors, (76), 71 states have call successors, (76) [2021-12-21 15:29:20,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 334 transitions. [2021-12-21 15:29:20,202 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 334 transitions. Word has length 97 [2021-12-21 15:29:20,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:29:20,202 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 334 transitions. [2021-12-21 15:29:20,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.0) internal successors, (108), 11 states have internal predecessors, (108), 7 states have call successors, (31), 4 states have call predecessors, (31), 5 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) [2021-12-21 15:29:20,202 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 334 transitions. [2021-12-21 15:29:20,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-21 15:29:20,203 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:29:20,203 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-12-21 15:29:20,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-21 15:29:20,423 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 [2021-12-21 15:29:20,424 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:29:20,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:29:20,424 INFO L85 PathProgramCache]: Analyzing trace with hash -2034657995, now seen corresponding path program 1 times [2021-12-21 15:29:20,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:29:20,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546400378] [2021-12-21 15:29:20,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:20,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:29:20,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:20,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:29:20,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:20,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 15:29:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:20,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:29:20,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:20,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:29:20,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:20,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 15:29:20,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:20,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 15:29:20,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:20,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 15:29:20,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:20,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 15:29:20,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:20,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 15:29:20,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:20,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 15:29:20,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:20,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 15:29:20,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:20,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 15:29:20,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:20,651 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-21 15:29:20,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:29:20,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546400378] [2021-12-21 15:29:20,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546400378] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:29:20,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:29:20,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 15:29:20,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326237504] [2021-12-21 15:29:20,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:29:20,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 15:29:20,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:29:20,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 15:29:20,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-21 15:29:20,653 INFO L87 Difference]: Start difference. First operand 246 states and 334 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-21 15:29:21,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:29:21,128 INFO L93 Difference]: Finished difference Result 478 states and 642 transitions. [2021-12-21 15:29:21,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 15:29:21,129 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 99 [2021-12-21 15:29:21,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:29:21,130 INFO L225 Difference]: With dead ends: 478 [2021-12-21 15:29:21,130 INFO L226 Difference]: Without dead ends: 255 [2021-12-21 15:29:21,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-12-21 15:29:21,132 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 239 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 15:29:21,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 812 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 15:29:21,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-12-21 15:29:21,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 243. [2021-12-21 15:29:21,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 152 states have (on average 1.2039473684210527) internal successors, (183), 153 states have internal predecessors, (183), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2021-12-21 15:29:21,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 326 transitions. [2021-12-21 15:29:21,144 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 326 transitions. Word has length 99 [2021-12-21 15:29:21,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:29:21,144 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 326 transitions. [2021-12-21 15:29:21,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-21 15:29:21,144 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 326 transitions. [2021-12-21 15:29:21,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-21 15:29:21,145 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:29:21,145 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-12-21 15:29:21,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 15:29:21,145 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:29:21,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:29:21,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1162403066, now seen corresponding path program 1 times [2021-12-21 15:29:21,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:29:21,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300311704] [2021-12-21 15:29:21,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:21,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:29:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:21,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:29:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:21,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 15:29:21,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:21,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:29:21,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:21,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:29:21,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:21,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 15:29:21,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:21,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 15:29:21,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:21,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 15:29:21,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:21,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 15:29:21,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:21,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 15:29:21,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:21,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 15:29:21,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:21,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 15:29:21,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:21,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 15:29:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:21,560 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-21 15:29:21,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:29:21,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300311704] [2021-12-21 15:29:21,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300311704] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:29:21,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842022059] [2021-12-21 15:29:21,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:21,561 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:29:21,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:29:21,569 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) [2021-12-21 15:29:21,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-21 15:29:21,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:21,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 2612 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-21 15:29:21,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:29:22,064 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-21 15:29:22,679 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 27 treesize of output 15 [2021-12-21 15:29:22,699 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 36 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-21 15:29:22,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:29:22,926 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-21 15:29:22,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842022059] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:29:22,926 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 15:29:22,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 8] total 17 [2021-12-21 15:29:22,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109696627] [2021-12-21 15:29:22,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 15:29:22,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-21 15:29:22,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:29:22,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-21 15:29:22,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-12-21 15:29:22,928 INFO L87 Difference]: Start difference. First operand 243 states and 326 transitions. Second operand has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 14 states have internal predecessors, (90), 8 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (19), 6 states have call predecessors, (19), 7 states have call successors, (19) [2021-12-21 15:29:24,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:29:24,636 INFO L93 Difference]: Finished difference Result 608 states and 831 transitions. [2021-12-21 15:29:24,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-21 15:29:24,637 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 14 states have internal predecessors, (90), 8 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (19), 6 states have call predecessors, (19), 7 states have call successors, (19) Word has length 101 [2021-12-21 15:29:24,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:29:24,639 INFO L225 Difference]: With dead ends: 608 [2021-12-21 15:29:24,639 INFO L226 Difference]: Without dead ends: 401 [2021-12-21 15:29:24,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 207 SyntacticMatches, 14 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=209, Invalid=1123, Unknown=0, NotChecked=0, Total=1332 [2021-12-21 15:29:24,641 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 285 mSDsluCounter, 1995 mSDsCounter, 0 mSdLazyCounter, 1919 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 2369 SdHoareTripleChecker+Invalid, 2648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 538 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-21 15:29:24,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 2369 Invalid, 2648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1919 Invalid, 0 Unknown, 538 Unchecked, 1.3s Time] [2021-12-21 15:29:24,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2021-12-21 15:29:24,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 290. [2021-12-21 15:29:24,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 189 states have (on average 1.2063492063492063) internal successors, (228), 190 states have internal predecessors, (228), 78 states have call successors, (78), 21 states have call predecessors, (78), 22 states have return successors, (85), 78 states have call predecessors, (85), 77 states have call successors, (85) [2021-12-21 15:29:24,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 391 transitions. [2021-12-21 15:29:24,664 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 391 transitions. Word has length 101 [2021-12-21 15:29:24,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:29:24,664 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 391 transitions. [2021-12-21 15:29:24,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 14 states have internal predecessors, (90), 8 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (19), 6 states have call predecessors, (19), 7 states have call successors, (19) [2021-12-21 15:29:24,665 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 391 transitions. [2021-12-21 15:29:24,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-21 15:29:24,666 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:29:24,666 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-12-21 15:29:24,686 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-21 15:29:24,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:29:24,879 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:29:24,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:29:24,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1694138625, now seen corresponding path program 1 times [2021-12-21 15:29:24,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:29:24,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862849311] [2021-12-21 15:29:24,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:24,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:29:24,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:25,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:29:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:25,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 15:29:25,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:25,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:29:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:25,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:29:25,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:25,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 15:29:25,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:25,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 15:29:25,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:25,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 15:29:25,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:25,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 15:29:25,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:25,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 15:29:25,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:25,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 15:29:25,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:25,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 15:29:25,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:25,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 15:29:25,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:25,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-21 15:29:25,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:25,101 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-12-21 15:29:25,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:29:25,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862849311] [2021-12-21 15:29:25,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862849311] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:29:25,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:29:25,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:29:25,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354676731] [2021-12-21 15:29:25,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:29:25,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:29:25,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:29:25,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:29:25,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:29:25,104 INFO L87 Difference]: Start difference. First operand 290 states and 391 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-21 15:29:25,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:29:25,599 INFO L93 Difference]: Finished difference Result 399 states and 531 transitions. [2021-12-21 15:29:25,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 15:29:25,599 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 105 [2021-12-21 15:29:25,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:29:25,601 INFO L225 Difference]: With dead ends: 399 [2021-12-21 15:29:25,601 INFO L226 Difference]: Without dead ends: 328 [2021-12-21 15:29:25,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-21 15:29:25,602 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 210 mSDsluCounter, 1031 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 1341 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 15:29:25,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 1341 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 15:29:25,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2021-12-21 15:29:25,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 292. [2021-12-21 15:29:25,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 191 states have (on average 1.2041884816753927) internal successors, (230), 192 states have internal predecessors, (230), 78 states have call successors, (78), 21 states have call predecessors, (78), 22 states have return successors, (85), 78 states have call predecessors, (85), 77 states have call successors, (85) [2021-12-21 15:29:25,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 393 transitions. [2021-12-21 15:29:25,618 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 393 transitions. Word has length 105 [2021-12-21 15:29:25,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:29:25,618 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 393 transitions. [2021-12-21 15:29:25,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-21 15:29:25,619 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 393 transitions. [2021-12-21 15:29:25,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-21 15:29:25,619 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:29:25,620 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-12-21 15:29:25,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 15:29:25,620 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:29:25,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:29:25,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1159574532, now seen corresponding path program 1 times [2021-12-21 15:29:25,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:29:25,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398267882] [2021-12-21 15:29:25,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:25,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:29:25,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:25,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:29:25,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:25,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 15:29:25,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:26,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:29:26,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:26,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:29:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:26,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 15:29:26,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:26,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 15:29:26,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:26,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 15:29:26,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:26,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 15:29:26,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:26,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 15:29:26,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:26,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 15:29:26,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:26,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 15:29:26,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:26,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 15:29:26,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:26,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-21 15:29:26,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:26,077 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-12-21 15:29:26,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:29:26,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398267882] [2021-12-21 15:29:26,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398267882] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:29:26,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:29:26,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-21 15:29:26,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003897383] [2021-12-21 15:29:26,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:29:26,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-21 15:29:26,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:29:26,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-21 15:29:26,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-12-21 15:29:26,079 INFO L87 Difference]: Start difference. First operand 292 states and 393 transitions. Second operand has 16 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 states have internal predecessors, (49), 8 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) [2021-12-21 15:29:27,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:29:27,709 INFO L93 Difference]: Finished difference Result 405 states and 566 transitions. [2021-12-21 15:29:27,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-21 15:29:27,710 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 states have internal predecessors, (49), 8 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) Word has length 107 [2021-12-21 15:29:27,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:29:27,712 INFO L225 Difference]: With dead ends: 405 [2021-12-21 15:29:27,712 INFO L226 Difference]: Without dead ends: 403 [2021-12-21 15:29:27,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=586, Unknown=0, NotChecked=0, Total=702 [2021-12-21 15:29:27,713 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 441 mSDsluCounter, 1466 mSDsCounter, 0 mSdLazyCounter, 2435 mSolverCounterSat, 422 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 1728 SdHoareTripleChecker+Invalid, 2857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 422 IncrementalHoareTripleChecker+Valid, 2435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-21 15:29:27,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [471 Valid, 1728 Invalid, 2857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [422 Valid, 2435 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-21 15:29:27,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2021-12-21 15:29:27,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 310. [2021-12-21 15:29:27,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 202 states have (on average 1.198019801980198) internal successors, (242), 204 states have internal predecessors, (242), 83 states have call successors, (83), 23 states have call predecessors, (83), 24 states have return successors, (90), 82 states have call predecessors, (90), 82 states have call successors, (90) [2021-12-21 15:29:27,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 415 transitions. [2021-12-21 15:29:27,754 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 415 transitions. Word has length 107 [2021-12-21 15:29:27,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:29:27,754 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 415 transitions. [2021-12-21 15:29:27,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 states have internal predecessors, (49), 8 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) [2021-12-21 15:29:27,754 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 415 transitions. [2021-12-21 15:29:27,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-21 15:29:27,755 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:29:27,756 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-12-21 15:29:27,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 15:29:27,756 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:29:27,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:29:27,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1506419318, now seen corresponding path program 1 times [2021-12-21 15:29:27,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:29:27,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331855245] [2021-12-21 15:29:27,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:27,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:29:27,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:27,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:29:27,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:27,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 15:29:27,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:27,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:29:27,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:27,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:29:27,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:27,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 15:29:27,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:27,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 15:29:27,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:27,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 15:29:27,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:27,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-21 15:29:27,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:27,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 15:29:27,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:27,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 15:29:27,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:27,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 15:29:27,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:27,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-21 15:29:27,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:28,002 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-21 15:29:28,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:29:28,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331855245] [2021-12-21 15:29:28,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331855245] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:29:28,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941105111] [2021-12-21 15:29:28,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:28,002 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:29:28,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:29:28,003 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) [2021-12-21 15:29:28,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-21 15:29:28,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:28,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 2636 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-21 15:29:28,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:29:28,710 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-21 15:29:28,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:29:28,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941105111] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:29:28,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:29:28,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [10] total 15 [2021-12-21 15:29:28,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809907075] [2021-12-21 15:29:28,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:29:28,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-21 15:29:28,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:29:28,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-21 15:29:28,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2021-12-21 15:29:28,712 INFO L87 Difference]: Start difference. First operand 310 states and 415 transitions. Second operand has 13 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 states have internal predecessors, (76), 4 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-21 15:29:28,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:29:28,916 INFO L93 Difference]: Finished difference Result 582 states and 785 transitions. [2021-12-21 15:29:28,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 15:29:28,917 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 states have internal predecessors, (76), 4 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 109 [2021-12-21 15:29:28,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:29:28,918 INFO L225 Difference]: With dead ends: 582 [2021-12-21 15:29:28,918 INFO L226 Difference]: Without dead ends: 327 [2021-12-21 15:29:28,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-12-21 15:29:28,920 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 30 mSDsluCounter, 3401 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3718 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:29:28,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 3718 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 15:29:28,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-12-21 15:29:28,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 315. [2021-12-21 15:29:28,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 206 states have (on average 1.1941747572815533) internal successors, (246), 209 states have internal predecessors, (246), 83 states have call successors, (83), 23 states have call predecessors, (83), 25 states have return successors, (97), 82 states have call predecessors, (97), 82 states have call successors, (97) [2021-12-21 15:29:28,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 426 transitions. [2021-12-21 15:29:28,963 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 426 transitions. Word has length 109 [2021-12-21 15:29:28,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:29:28,963 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 426 transitions. [2021-12-21 15:29:28,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 states have internal predecessors, (76), 4 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-21 15:29:28,964 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 426 transitions. [2021-12-21 15:29:28,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-21 15:29:28,964 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:29:28,965 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-12-21 15:29:28,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-21 15:29:29,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:29:29,192 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:29:29,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:29:29,192 INFO L85 PathProgramCache]: Analyzing trace with hash 447046383, now seen corresponding path program 1 times [2021-12-21 15:29:29,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:29:29,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588023674] [2021-12-21 15:29:29,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:29,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:29:29,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:29,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:29:29,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:29,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 15:29:29,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:29,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:29:29,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:29,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:29:29,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:29,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 15:29:29,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:29,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 15:29:29,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:29,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 15:29:29,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:29,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 15:29:29,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:29,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 15:29:29,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:29,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 15:29:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:29,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 15:29:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:29,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-21 15:29:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:29,443 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-12-21 15:29:29,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:29:29,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588023674] [2021-12-21 15:29:29,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588023674] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:29:29,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391850577] [2021-12-21 15:29:29,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:29,444 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:29:29,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:29:29,446 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) [2021-12-21 15:29:29,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-21 15:29:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:29,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 2641 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 15:29:29,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:29:30,124 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-21 15:29:30,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:29:30,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391850577] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:29:30,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:29:30,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2021-12-21 15:29:30,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883120763] [2021-12-21 15:29:30,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:29:30,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 15:29:30,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:29:30,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 15:29:30,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:29:30,125 INFO L87 Difference]: Start difference. First operand 315 states and 426 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-21 15:29:30,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:29:30,317 INFO L93 Difference]: Finished difference Result 575 states and 783 transitions. [2021-12-21 15:29:30,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 15:29:30,318 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 111 [2021-12-21 15:29:30,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:29:30,319 INFO L225 Difference]: With dead ends: 575 [2021-12-21 15:29:30,319 INFO L226 Difference]: Without dead ends: 315 [2021-12-21 15:29:30,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-21 15:29:30,321 INFO L933 BasicCegarLoop]: 328 mSDtfsCounter, 15 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:29:30,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 1171 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 49 Unchecked, 0.1s Time] [2021-12-21 15:29:30,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-12-21 15:29:30,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2021-12-21 15:29:30,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 206 states have (on average 1.1893203883495145) internal successors, (245), 209 states have internal predecessors, (245), 83 states have call successors, (83), 23 states have call predecessors, (83), 25 states have return successors, (97), 82 states have call predecessors, (97), 82 states have call successors, (97) [2021-12-21 15:29:30,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 425 transitions. [2021-12-21 15:29:30,341 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 425 transitions. Word has length 111 [2021-12-21 15:29:30,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:29:30,341 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 425 transitions. [2021-12-21 15:29:30,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-21 15:29:30,342 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 425 transitions. [2021-12-21 15:29:30,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-21 15:29:30,343 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:29:30,343 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-12-21 15:29:30,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-21 15:29:30,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:29:30,565 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:29:30,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:29:30,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1007746161, now seen corresponding path program 1 times [2021-12-21 15:29:30,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:29:30,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702195281] [2021-12-21 15:29:30,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:30,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:29:30,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:30,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:29:30,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:30,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 15:29:30,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:30,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:29:30,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:30,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:29:30,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:30,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 15:29:30,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:30,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 15:29:30,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:30,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 15:29:30,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:30,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 15:29:30,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:30,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 15:29:30,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:30,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 15:29:30,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:30,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 15:29:30,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:30,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-21 15:29:30,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:30,874 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-21 15:29:30,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:29:30,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702195281] [2021-12-21 15:29:30,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702195281] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:29:30,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:29:30,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-21 15:29:30,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944211184] [2021-12-21 15:29:30,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:29:30,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 15:29:30,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:29:30,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 15:29:30,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-21 15:29:30,877 INFO L87 Difference]: Start difference. First operand 315 states and 425 transitions. Second operand has 10 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-21 15:29:31,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:29:31,421 INFO L93 Difference]: Finished difference Result 581 states and 776 transitions. [2021-12-21 15:29:31,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 15:29:31,421 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 111 [2021-12-21 15:29:31,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:29:31,423 INFO L225 Difference]: With dead ends: 581 [2021-12-21 15:29:31,423 INFO L226 Difference]: Without dead ends: 327 [2021-12-21 15:29:31,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-12-21 15:29:31,424 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 105 mSDsluCounter, 1651 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 1957 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-21 15:29:31,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 1957 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-21 15:29:31,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-12-21 15:29:31,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 315. [2021-12-21 15:29:31,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 206 states have (on average 1.1893203883495145) internal successors, (245), 209 states have internal predecessors, (245), 83 states have call successors, (83), 23 states have call predecessors, (83), 25 states have return successors, (95), 82 states have call predecessors, (95), 82 states have call successors, (95) [2021-12-21 15:29:31,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 423 transitions. [2021-12-21 15:29:31,441 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 423 transitions. Word has length 111 [2021-12-21 15:29:31,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:29:31,441 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 423 transitions. [2021-12-21 15:29:31,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-21 15:29:31,441 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 423 transitions. [2021-12-21 15:29:31,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-21 15:29:31,442 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:29:31,442 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-12-21 15:29:31,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-21 15:29:31,443 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:29:31,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:29:31,443 INFO L85 PathProgramCache]: Analyzing trace with hash -520378079, now seen corresponding path program 1 times [2021-12-21 15:29:31,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:29:31,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889479835] [2021-12-21 15:29:31,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:31,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:29:31,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:31,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:29:31,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:31,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 15:29:31,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:31,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:29:31,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:31,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:29:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:31,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 15:29:31,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:31,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 15:29:31,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:31,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 15:29:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:31,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 15:29:31,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:31,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 15:29:31,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:31,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 15:29:31,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:31,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 15:29:31,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:31,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 15:29:31,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:31,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-21 15:29:31,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:31,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-21 15:29:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:31,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:29:31,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:31,955 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-12-21 15:29:31,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:29:31,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889479835] [2021-12-21 15:29:31,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889479835] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:29:31,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:29:31,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-21 15:29:31,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382152572] [2021-12-21 15:29:31,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:29:31,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-21 15:29:31,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:29:31,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-21 15:29:31,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-12-21 15:29:31,957 INFO L87 Difference]: Start difference. First operand 315 states and 423 transitions. Second operand has 15 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 9 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) [2021-12-21 15:29:33,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:29:33,356 INFO L93 Difference]: Finished difference Result 412 states and 576 transitions. [2021-12-21 15:29:33,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 15:29:33,357 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 9 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) Word has length 116 [2021-12-21 15:29:33,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:29:33,359 INFO L225 Difference]: With dead ends: 412 [2021-12-21 15:29:33,359 INFO L226 Difference]: Without dead ends: 410 [2021-12-21 15:29:33,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2021-12-21 15:29:33,360 INFO L933 BasicCegarLoop]: 267 mSDtfsCounter, 443 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 1946 mSolverCounterSat, 467 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 2413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 467 IncrementalHoareTripleChecker+Valid, 1946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-21 15:29:33,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [473 Valid, 1226 Invalid, 2413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [467 Valid, 1946 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-21 15:29:33,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-12-21 15:29:33,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 321. [2021-12-21 15:29:33,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 210 states have (on average 1.1857142857142857) internal successors, (249), 213 states have internal predecessors, (249), 84 states have call successors, (84), 24 states have call predecessors, (84), 26 states have return successors, (96), 83 states have call predecessors, (96), 83 states have call successors, (96) [2021-12-21 15:29:33,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 429 transitions. [2021-12-21 15:29:33,380 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 429 transitions. Word has length 116 [2021-12-21 15:29:33,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:29:33,380 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 429 transitions. [2021-12-21 15:29:33,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 9 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) [2021-12-21 15:29:33,381 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 429 transitions. [2021-12-21 15:29:33,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-21 15:29:33,381 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:29:33,382 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-21 15:29:33,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-21 15:29:33,382 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:29:33,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:29:33,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1585491666, now seen corresponding path program 1 times [2021-12-21 15:29:33,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:29:33,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187305476] [2021-12-21 15:29:33,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:33,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:29:33,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:33,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:29:33,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:33,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 15:29:33,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:33,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:29:33,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:33,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:29:33,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:33,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 15:29:33,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:33,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 15:29:33,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:33,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 15:29:33,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:33,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 15:29:33,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:33,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 15:29:33,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:33,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 15:29:33,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:33,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 15:29:33,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:33,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 15:29:33,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:33,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 15:29:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:33,584 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-12-21 15:29:33,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:29:33,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187305476] [2021-12-21 15:29:33,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187305476] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:29:33,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:29:33,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 15:29:33,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166295784] [2021-12-21 15:29:33,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:29:33,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 15:29:33,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:29:33,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 15:29:33,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 15:29:33,586 INFO L87 Difference]: Start difference. First operand 321 states and 429 transitions. Second operand has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-21 15:29:34,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:29:34,165 INFO L93 Difference]: Finished difference Result 349 states and 466 transitions. [2021-12-21 15:29:34,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 15:29:34,165 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 114 [2021-12-21 15:29:34,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:29:34,167 INFO L225 Difference]: With dead ends: 349 [2021-12-21 15:29:34,167 INFO L226 Difference]: Without dead ends: 347 [2021-12-21 15:29:34,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-12-21 15:29:34,168 INFO L933 BasicCegarLoop]: 303 mSDtfsCounter, 117 mSDsluCounter, 1418 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1721 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-21 15:29:34,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 1721 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-21 15:29:34,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-12-21 15:29:34,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 330. [2021-12-21 15:29:34,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 216 states have (on average 1.1805555555555556) internal successors, (255), 220 states have internal predecessors, (255), 85 states have call successors, (85), 25 states have call predecessors, (85), 28 states have return successors, (104), 84 states have call predecessors, (104), 84 states have call successors, (104) [2021-12-21 15:29:34,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 444 transitions. [2021-12-21 15:29:34,184 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 444 transitions. Word has length 114 [2021-12-21 15:29:34,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:29:34,184 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 444 transitions. [2021-12-21 15:29:34,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-21 15:29:34,185 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 444 transitions. [2021-12-21 15:29:34,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-21 15:29:34,185 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:29:34,185 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-12-21 15:29:34,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-21 15:29:34,186 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:29:34,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:29:34,186 INFO L85 PathProgramCache]: Analyzing trace with hash 661869912, now seen corresponding path program 1 times [2021-12-21 15:29:34,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:29:34,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247751070] [2021-12-21 15:29:34,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:34,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:29:34,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:34,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:29:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:34,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 15:29:34,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:34,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:29:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:34,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:29:34,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:34,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 15:29:34,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:34,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 15:29:34,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:34,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 15:29:34,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:34,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 15:29:34,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:34,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 15:29:34,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:34,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 15:29:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:34,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 15:29:34,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:34,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-21 15:29:34,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:34,704 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-12-21 15:29:34,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:29:34,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247751070] [2021-12-21 15:29:34,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247751070] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:29:34,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266617812] [2021-12-21 15:29:34,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:34,704 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:29:34,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:29:34,723 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) [2021-12-21 15:29:34,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-21 15:29:35,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:35,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 2656 conjuncts, 37 conjunts are in the unsatisfiable core [2021-12-21 15:29:35,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:29:35,277 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-21 15:29:35,281 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-21 15:29:35,661 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-21 15:29:35,662 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:29:35,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266617812] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:29:35,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:29:35,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2021-12-21 15:29:35,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372429677] [2021-12-21 15:29:35,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:29:35,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 15:29:35,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:29:35,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 15:29:35,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-12-21 15:29:35,664 INFO L87 Difference]: Start difference. First operand 330 states and 444 transitions. Second operand has 10 states, 10 states have (on average 7.7) internal successors, (77), 9 states have internal predecessors, (77), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-21 15:29:35,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:29:35,873 INFO L93 Difference]: Finished difference Result 748 states and 1039 transitions. [2021-12-21 15:29:35,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 15:29:35,873 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 9 states have internal predecessors, (77), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 113 [2021-12-21 15:29:35,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:29:35,876 INFO L225 Difference]: With dead ends: 748 [2021-12-21 15:29:35,876 INFO L226 Difference]: Without dead ends: 459 [2021-12-21 15:29:35,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2021-12-21 15:29:35,878 INFO L933 BasicCegarLoop]: 465 mSDtfsCounter, 83 mSDsluCounter, 2793 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 3258 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 202 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 15:29:35,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 3258 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 159 Invalid, 0 Unknown, 202 Unchecked, 0.2s Time] [2021-12-21 15:29:35,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2021-12-21 15:29:35,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 343. [2021-12-21 15:29:35,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 227 states have (on average 1.1762114537444934) internal successors, (267), 232 states have internal predecessors, (267), 86 states have call successors, (86), 26 states have call predecessors, (86), 29 states have return successors, (106), 84 states have call predecessors, (106), 85 states have call successors, (106) [2021-12-21 15:29:35,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 459 transitions. [2021-12-21 15:29:35,917 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 459 transitions. Word has length 113 [2021-12-21 15:29:35,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:29:35,918 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 459 transitions. [2021-12-21 15:29:35,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 9 states have internal predecessors, (77), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-21 15:29:35,918 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 459 transitions. [2021-12-21 15:29:35,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-21 15:29:35,920 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:29:35,920 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-12-21 15:29:35,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-21 15:29:36,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:29:36,135 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:29:36,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:29:36,135 INFO L85 PathProgramCache]: Analyzing trace with hash 607477014, now seen corresponding path program 1 times [2021-12-21 15:29:36,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:29:36,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189769831] [2021-12-21 15:29:36,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:36,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:29:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:36,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:29:36,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:36,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 15:29:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:36,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:29:36,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:36,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:29:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:36,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 15:29:36,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:36,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 15:29:36,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:36,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 15:29:36,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:36,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 15:29:36,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:36,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 15:29:36,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:36,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 15:29:36,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:36,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 15:29:36,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:36,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-21 15:29:36,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:36,307 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-12-21 15:29:36,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:29:36,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189769831] [2021-12-21 15:29:36,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189769831] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:29:36,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187563983] [2021-12-21 15:29:36,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:36,308 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:29:36,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:29:36,314 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) [2021-12-21 15:29:36,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-21 15:29:36,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:36,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 2651 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 15:29:36,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:29:36,845 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-21 15:29:36,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:29:36,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187563983] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:29:36,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:29:36,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2021-12-21 15:29:36,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955989147] [2021-12-21 15:29:36,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:29:36,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 15:29:36,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:29:36,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 15:29:36,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 15:29:36,846 INFO L87 Difference]: Start difference. First operand 343 states and 459 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-21 15:29:36,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:29:36,886 INFO L93 Difference]: Finished difference Result 623 states and 840 transitions. [2021-12-21 15:29:36,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 15:29:36,887 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2021-12-21 15:29:36,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:29:36,888 INFO L225 Difference]: With dead ends: 623 [2021-12-21 15:29:36,888 INFO L226 Difference]: Without dead ends: 345 [2021-12-21 15:29:36,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:29:36,891 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 6 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 15:29:36,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 966 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 15:29:36,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-12-21 15:29:36,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 342. [2021-12-21 15:29:36,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 226 states have (on average 1.1725663716814159) internal successors, (265), 231 states have internal predecessors, (265), 86 states have call successors, (86), 26 states have call predecessors, (86), 29 states have return successors, (105), 84 states have call predecessors, (105), 85 states have call successors, (105) [2021-12-21 15:29:36,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 456 transitions. [2021-12-21 15:29:36,909 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 456 transitions. Word has length 113 [2021-12-21 15:29:36,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:29:36,909 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 456 transitions. [2021-12-21 15:29:36,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-21 15:29:36,909 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 456 transitions. [2021-12-21 15:29:36,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-21 15:29:36,910 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:29:36,910 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:29:36,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-21 15:29:37,131 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,SelfDestructingSolverStorable14 [2021-12-21 15:29:37,131 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:29:37,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:29:37,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1031558170, now seen corresponding path program 1 times [2021-12-21 15:29:37,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:29:37,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906706180] [2021-12-21 15:29:37,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:37,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:29:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:37,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:29:37,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:37,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 15:29:37,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:37,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:29:37,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:37,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:29:37,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:37,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 15:29:37,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:37,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 15:29:37,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:37,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 15:29:37,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:37,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 15:29:37,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:37,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 15:29:37,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:37,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 15:29:37,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:37,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 15:29:37,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:37,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 15:29:37,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:37,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 15:29:37,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:37,345 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-21 15:29:37,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:29:37,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906706180] [2021-12-21 15:29:37,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906706180] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:29:37,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:29:37,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 15:29:37,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395526126] [2021-12-21 15:29:37,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:29:37,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:29:37,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:29:37,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:29:37,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:29:37,347 INFO L87 Difference]: Start difference. First operand 342 states and 456 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-21 15:29:37,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:29:37,770 INFO L93 Difference]: Finished difference Result 733 states and 992 transitions. [2021-12-21 15:29:37,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 15:29:37,770 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 118 [2021-12-21 15:29:37,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:29:37,773 INFO L225 Difference]: With dead ends: 733 [2021-12-21 15:29:37,773 INFO L226 Difference]: Without dead ends: 402 [2021-12-21 15:29:37,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-12-21 15:29:37,775 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 175 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 15:29:37,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 801 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 15:29:37,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2021-12-21 15:29:37,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 352. [2021-12-21 15:29:37,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 236 states have (on average 1.1822033898305084) internal successors, (279), 241 states have internal predecessors, (279), 86 states have call successors, (86), 26 states have call predecessors, (86), 29 states have return successors, (105), 84 states have call predecessors, (105), 85 states have call successors, (105) [2021-12-21 15:29:37,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 470 transitions. [2021-12-21 15:29:37,795 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 470 transitions. Word has length 118 [2021-12-21 15:29:37,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:29:37,797 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 470 transitions. [2021-12-21 15:29:37,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-21 15:29:37,797 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 470 transitions. [2021-12-21 15:29:37,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-21 15:29:37,817 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:29:37,817 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:29:37,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-21 15:29:37,817 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:29:37,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:29:37,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1289723608, now seen corresponding path program 1 times [2021-12-21 15:29:37,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:29:37,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632084026] [2021-12-21 15:29:37,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:37,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:29:37,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:38,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:29:38,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:38,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 15:29:38,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:38,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:29:38,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:38,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:29:38,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:38,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 15:29:38,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:38,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 15:29:38,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:38,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 15:29:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:38,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 15:29:38,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:38,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 15:29:38,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:38,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 15:29:38,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:38,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 15:29:38,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:38,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 15:29:38,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:38,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 15:29:38,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:38,143 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-12-21 15:29:38,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:29:38,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632084026] [2021-12-21 15:29:38,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632084026] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:29:38,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753184517] [2021-12-21 15:29:38,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:38,144 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:29:38,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:29:38,158 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) [2021-12-21 15:29:38,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-21 15:29:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:38,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 2665 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-21 15:29:38,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:29:38,625 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 11 treesize of output 7 [2021-12-21 15:29:38,887 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-21 15:29:38,887 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:29:38,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753184517] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:29:38,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:29:38,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 16 [2021-12-21 15:29:38,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630966682] [2021-12-21 15:29:38,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:29:38,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-21 15:29:38,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:29:38,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-21 15:29:38,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-12-21 15:29:38,888 INFO L87 Difference]: Start difference. First operand 352 states and 470 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-21 15:29:38,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:29:38,975 INFO L93 Difference]: Finished difference Result 716 states and 952 transitions. [2021-12-21 15:29:38,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 15:29:38,976 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 118 [2021-12-21 15:29:38,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:29:38,977 INFO L225 Difference]: With dead ends: 716 [2021-12-21 15:29:38,977 INFO L226 Difference]: Without dead ends: 371 [2021-12-21 15:29:38,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-12-21 15:29:38,979 INFO L933 BasicCegarLoop]: 321 mSDtfsCounter, 29 mSDsluCounter, 1222 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1543 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:29:38,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 1543 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 43 Unchecked, 0.1s Time] [2021-12-21 15:29:38,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-12-21 15:29:38,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2021-12-21 15:29:38,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 254 states have (on average 1.188976377952756) internal successors, (302), 259 states have internal predecessors, (302), 86 states have call successors, (86), 27 states have call predecessors, (86), 30 states have return successors, (105), 84 states have call predecessors, (105), 85 states have call successors, (105) [2021-12-21 15:29:38,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 493 transitions. [2021-12-21 15:29:38,996 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 493 transitions. Word has length 118 [2021-12-21 15:29:38,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:29:38,996 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 493 transitions. [2021-12-21 15:29:38,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-21 15:29:38,997 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 493 transitions. [2021-12-21 15:29:38,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-21 15:29:38,998 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:29:38,998 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-21 15:29:39,018 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-21 15:29:39,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-21 15:29:39,211 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:29:39,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:29:39,212 INFO L85 PathProgramCache]: Analyzing trace with hash 406214618, now seen corresponding path program 1 times [2021-12-21 15:29:39,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:29:39,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612958620] [2021-12-21 15:29:39,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:39,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:29:39,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:39,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:29:39,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:39,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 15:29:39,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:39,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:29:39,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:39,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:29:39,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:39,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 15:29:39,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:39,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 15:29:39,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:39,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 15:29:39,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:39,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 15:29:39,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:39,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 15:29:39,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:39,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 15:29:39,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:39,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 15:29:39,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:39,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 15:29:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:39,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 15:29:39,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:39,425 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-12-21 15:29:39,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:29:39,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612958620] [2021-12-21 15:29:39,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612958620] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:29:39,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763546133] [2021-12-21 15:29:39,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:39,426 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:29:39,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:29:39,440 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) [2021-12-21 15:29:39,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-21 15:29:39,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:39,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 2660 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 15:29:39,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:29:39,992 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-12-21 15:29:39,992 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:29:39,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763546133] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:29:39,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:29:39,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2021-12-21 15:29:39,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529503396] [2021-12-21 15:29:39,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:29:39,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 15:29:39,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:29:39,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 15:29:39,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 15:29:39,995 INFO L87 Difference]: Start difference. First operand 371 states and 493 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 15:29:40,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:29:40,028 INFO L93 Difference]: Finished difference Result 738 states and 989 transitions. [2021-12-21 15:29:40,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 15:29:40,029 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 118 [2021-12-21 15:29:40,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:29:40,030 INFO L225 Difference]: With dead ends: 738 [2021-12-21 15:29:40,031 INFO L226 Difference]: Without dead ends: 393 [2021-12-21 15:29:40,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:29:40,033 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 20 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 967 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 [2021-12-21 15:29:40,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 967 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 15:29:40,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2021-12-21 15:29:40,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 367. [2021-12-21 15:29:40,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 251 states have (on average 1.1832669322709164) internal successors, (297), 255 states have internal predecessors, (297), 86 states have call successors, (86), 27 states have call predecessors, (86), 29 states have return successors, (104), 84 states have call predecessors, (104), 85 states have call successors, (104) [2021-12-21 15:29:40,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 487 transitions. [2021-12-21 15:29:40,055 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 487 transitions. Word has length 118 [2021-12-21 15:29:40,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:29:40,056 INFO L470 AbstractCegarLoop]: Abstraction has 367 states and 487 transitions. [2021-12-21 15:29:40,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 15:29:40,056 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 487 transitions. [2021-12-21 15:29:40,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-21 15:29:40,057 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:29:40,057 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-21 15:29:40,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-21 15:29:40,274 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,SelfDestructingSolverStorable17 [2021-12-21 15:29:40,274 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:29:40,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:29:40,274 INFO L85 PathProgramCache]: Analyzing trace with hash 935054174, now seen corresponding path program 2 times [2021-12-21 15:29:40,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:29:40,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063293333] [2021-12-21 15:29:40,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:40,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:29:40,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:40,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:29:40,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:40,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 15:29:40,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:40,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:29:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:40,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:29:40,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:40,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 15:29:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:40,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 15:29:40,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:40,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 15:29:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:40,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-21 15:29:40,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:40,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 15:29:40,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:40,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 15:29:40,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:40,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 15:29:40,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:40,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 15:29:40,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:40,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 15:29:40,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:40,510 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-21 15:29:40,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:29:40,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063293333] [2021-12-21 15:29:40,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063293333] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:29:40,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509636207] [2021-12-21 15:29:40,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 15:29:40,511 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:29:40,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:29:40,512 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) [2021-12-21 15:29:40,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-21 15:29:40,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 15:29:40,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 15:29:40,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 2672 conjuncts, 80 conjunts are in the unsatisfiable core [2021-12-21 15:29:40,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:29:41,025 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-21 15:29:41,029 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-21 15:29:41,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:29:41,147 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-21 15:29:41,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:29:41,153 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-21 15:29:41,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:29:41,518 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-21 15:29:41,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:29:41,522 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-21 15:29:42,447 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-21 15:29:42,447 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:29:42,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509636207] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:29:42,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:29:42,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [10] total 21 [2021-12-21 15:29:42,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994150300] [2021-12-21 15:29:42,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:29:42,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-21 15:29:42,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:29:42,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-21 15:29:42,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2021-12-21 15:29:42,449 INFO L87 Difference]: Start difference. First operand 367 states and 487 transitions. Second operand has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 13 states have internal predecessors, (80), 8 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2021-12-21 15:29:42,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:29:42,519 INFO L93 Difference]: Finished difference Result 605 states and 785 transitions. [2021-12-21 15:29:42,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 15:29:42,520 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 13 states have internal predecessors, (80), 8 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 122 [2021-12-21 15:29:42,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:29:42,522 INFO L225 Difference]: With dead ends: 605 [2021-12-21 15:29:42,522 INFO L226 Difference]: Without dead ends: 485 [2021-12-21 15:29:42,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 118 SyntacticMatches, 18 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2021-12-21 15:29:42,523 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 54 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 91 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 15:29:42,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 1496 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 91 Unchecked, 0.0s Time] [2021-12-21 15:29:42,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2021-12-21 15:29:42,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 468. [2021-12-21 15:29:42,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 333 states have (on average 1.1861861861861862) internal successors, (395), 337 states have internal predecessors, (395), 97 states have call successors, (97), 35 states have call predecessors, (97), 37 states have return successors, (118), 95 states have call predecessors, (118), 96 states have call successors, (118) [2021-12-21 15:29:42,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 610 transitions. [2021-12-21 15:29:42,546 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 610 transitions. Word has length 122 [2021-12-21 15:29:42,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:29:42,546 INFO L470 AbstractCegarLoop]: Abstraction has 468 states and 610 transitions. [2021-12-21 15:29:42,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 13 states have internal predecessors, (80), 8 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2021-12-21 15:29:42,547 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 610 transitions. [2021-12-21 15:29:42,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-21 15:29:42,548 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:29:42,548 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-12-21 15:29:42,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-21 15:29:42,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:29:42,768 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:29:42,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:29:42,770 INFO L85 PathProgramCache]: Analyzing trace with hash -350314988, now seen corresponding path program 1 times [2021-12-21 15:29:42,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:29:42,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722230663] [2021-12-21 15:29:42,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:42,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:29:42,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:42,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:29:42,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:42,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 15:29:42,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:42,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:29:42,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:42,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:29:42,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:42,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 15:29:42,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:42,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 15:29:42,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:42,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 15:29:42,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:42,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-21 15:29:42,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:42,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 15:29:42,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:42,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 15:29:42,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:42,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 15:29:42,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:42,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 15:29:42,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:42,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-21 15:29:42,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:42,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-21 15:29:43,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:43,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-21 15:29:43,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:43,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-21 15:29:43,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:43,033 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-12-21 15:29:43,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:29:43,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722230663] [2021-12-21 15:29:43,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722230663] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:29:43,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566706849] [2021-12-21 15:29:43,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:43,034 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:29:43,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:29:43,035 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) [2021-12-21 15:29:43,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-21 15:29:43,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:43,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 2702 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-21 15:29:43,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:29:43,685 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-21 15:29:43,685 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:29:43,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566706849] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:29:43,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:29:43,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 12 [2021-12-21 15:29:43,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490380358] [2021-12-21 15:29:43,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:29:43,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 15:29:43,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:29:43,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 15:29:43,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-12-21 15:29:43,688 INFO L87 Difference]: Start difference. First operand 468 states and 610 transitions. Second operand has 9 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-21 15:29:43,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:29:43,863 INFO L93 Difference]: Finished difference Result 902 states and 1177 transitions. [2021-12-21 15:29:43,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 15:29:43,864 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 128 [2021-12-21 15:29:43,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:29:43,867 INFO L225 Difference]: With dead ends: 902 [2021-12-21 15:29:43,867 INFO L226 Difference]: Without dead ends: 483 [2021-12-21 15:29:43,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 156 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-12-21 15:29:43,869 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 12 mSDsluCounter, 2141 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2454 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 [2021-12-21 15:29:43,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 2454 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 15:29:43,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-12-21 15:29:43,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 478. [2021-12-21 15:29:43,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 341 states have (on average 1.1788856304985338) internal successors, (402), 347 states have internal predecessors, (402), 97 states have call successors, (97), 35 states have call predecessors, (97), 39 states have return successors, (125), 95 states have call predecessors, (125), 96 states have call successors, (125) [2021-12-21 15:29:43,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 624 transitions. [2021-12-21 15:29:43,904 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 624 transitions. Word has length 128 [2021-12-21 15:29:43,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:29:43,904 INFO L470 AbstractCegarLoop]: Abstraction has 478 states and 624 transitions. [2021-12-21 15:29:43,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-21 15:29:43,904 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 624 transitions. [2021-12-21 15:29:43,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-21 15:29:43,907 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:29:43,907 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-21 15:29:43,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-21 15:29:44,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:29:44,131 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:29:44,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:29:44,132 INFO L85 PathProgramCache]: Analyzing trace with hash -24703323, now seen corresponding path program 1 times [2021-12-21 15:29:44,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:29:44,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413532505] [2021-12-21 15:29:44,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:44,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:29:44,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:44,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:29:44,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:44,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 15:29:44,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:44,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:29:44,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:44,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:29:44,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:44,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 15:29:44,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:44,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-21 15:29:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:44,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 15:29:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:44,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 15:29:44,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:44,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 15:29:44,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:44,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 15:29:44,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:44,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 15:29:44,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:44,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 15:29:44,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:44,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-21 15:29:44,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:44,297 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-12-21 15:29:44,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:29:44,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413532505] [2021-12-21 15:29:44,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413532505] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:29:44,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845311774] [2021-12-21 15:29:44,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:44,298 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:29:44,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:29:44,312 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) [2021-12-21 15:29:44,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-21 15:29:44,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:44,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 2682 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 15:29:44,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:29:44,879 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-21 15:29:44,879 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:29:44,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845311774] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:29:44,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:29:44,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2021-12-21 15:29:44,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376756874] [2021-12-21 15:29:44,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:29:44,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 15:29:44,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:29:44,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 15:29:44,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 15:29:44,881 INFO L87 Difference]: Start difference. First operand 478 states and 624 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 15:29:44,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:29:44,917 INFO L93 Difference]: Finished difference Result 933 states and 1225 transitions. [2021-12-21 15:29:44,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 15:29:44,918 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2021-12-21 15:29:44,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:29:44,920 INFO L225 Difference]: With dead ends: 933 [2021-12-21 15:29:44,920 INFO L226 Difference]: Without dead ends: 489 [2021-12-21 15:29:44,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:29:44,921 INFO L933 BasicCegarLoop]: 325 mSDtfsCounter, 9 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 965 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 [2021-12-21 15:29:44,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 965 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 15:29:44,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2021-12-21 15:29:44,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 477. [2021-12-21 15:29:44,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 340 states have (on average 1.1647058823529413) internal successors, (396), 346 states have internal predecessors, (396), 97 states have call successors, (97), 35 states have call predecessors, (97), 39 states have return successors, (125), 95 states have call predecessors, (125), 96 states have call successors, (125) [2021-12-21 15:29:44,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 618 transitions. [2021-12-21 15:29:44,943 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 618 transitions. Word has length 124 [2021-12-21 15:29:44,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:29:44,943 INFO L470 AbstractCegarLoop]: Abstraction has 477 states and 618 transitions. [2021-12-21 15:29:44,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 15:29:44,943 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 618 transitions. [2021-12-21 15:29:44,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-21 15:29:44,944 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:29:44,944 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-21 15:29:44,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-21 15:29:45,164 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,SelfDestructingSolverStorable20 [2021-12-21 15:29:45,165 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:29:45,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:29:45,165 INFO L85 PathProgramCache]: Analyzing trace with hash -275114519, now seen corresponding path program 1 times [2021-12-21 15:29:45,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:29:45,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524417604] [2021-12-21 15:29:45,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:45,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:29:45,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:45,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:29:45,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:45,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 15:29:45,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:45,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:29:45,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:45,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:29:45,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:45,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 15:29:45,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:45,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-21 15:29:45,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:45,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 15:29:45,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:45,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 15:29:45,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:45,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 15:29:45,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:45,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 15:29:45,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:45,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 15:29:45,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:45,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 15:29:45,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:45,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-21 15:29:45,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:45,352 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-12-21 15:29:45,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:29:45,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524417604] [2021-12-21 15:29:45,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524417604] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:29:45,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663114935] [2021-12-21 15:29:45,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:45,353 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:29:45,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:29:45,368 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) [2021-12-21 15:29:45,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-21 15:29:45,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:45,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 2684 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 15:29:45,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:29:45,911 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-12-21 15:29:45,911 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:29:45,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663114935] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:29:45,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:29:45,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2021-12-21 15:29:45,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009029992] [2021-12-21 15:29:45,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:29:45,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 15:29:45,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:29:45,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 15:29:45,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 15:29:45,913 INFO L87 Difference]: Start difference. First operand 477 states and 618 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 15:29:45,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:29:45,952 INFO L93 Difference]: Finished difference Result 952 states and 1246 transitions. [2021-12-21 15:29:45,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 15:29:45,952 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2021-12-21 15:29:45,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:29:45,954 INFO L225 Difference]: With dead ends: 952 [2021-12-21 15:29:45,954 INFO L226 Difference]: Without dead ends: 506 [2021-12-21 15:29:45,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:29:45,957 INFO L933 BasicCegarLoop]: 322 mSDtfsCounter, 34 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 15:29:45,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 958 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 15:29:45,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-12-21 15:29:45,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 469. [2021-12-21 15:29:45,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 332 states have (on average 1.144578313253012) internal successors, (380), 338 states have internal predecessors, (380), 97 states have call successors, (97), 35 states have call predecessors, (97), 39 states have return successors, (125), 95 states have call predecessors, (125), 96 states have call successors, (125) [2021-12-21 15:29:45,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 602 transitions. [2021-12-21 15:29:45,977 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 602 transitions. Word has length 124 [2021-12-21 15:29:45,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:29:45,977 INFO L470 AbstractCegarLoop]: Abstraction has 469 states and 602 transitions. [2021-12-21 15:29:45,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 15:29:45,978 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 602 transitions. [2021-12-21 15:29:45,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-21 15:29:45,979 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:29:45,979 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-21 15:29:46,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-21 15:29:46,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:29:46,218 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:29:46,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:29:46,218 INFO L85 PathProgramCache]: Analyzing trace with hash 755926379, now seen corresponding path program 1 times [2021-12-21 15:29:46,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:29:46,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116223446] [2021-12-21 15:29:46,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:46,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:29:46,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:46,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:29:46,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:46,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 15:29:46,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:46,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:29:46,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:46,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:29:46,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:46,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 15:29:46,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:46,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-21 15:29:46,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:46,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 15:29:46,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:46,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 15:29:46,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:46,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 15:29:46,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:46,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 15:29:46,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:46,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 15:29:46,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:46,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 15:29:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:46,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-21 15:29:46,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:46,684 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-21 15:29:46,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:29:46,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116223446] [2021-12-21 15:29:46,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116223446] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:29:46,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525004303] [2021-12-21 15:29:46,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:46,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:29:46,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:29:46,696 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) [2021-12-21 15:29:46,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-21 15:29:47,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:47,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 2679 conjuncts, 82 conjunts are in the unsatisfiable core [2021-12-21 15:29:47,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:29:47,180 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-21 15:29:47,183 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-21 15:29:47,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:29:47,305 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-21 15:29:47,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:29:47,310 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-21 15:29:47,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:29:47,948 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2021-12-21 15:29:47,959 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-21 15:29:47,960 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2021-12-21 15:29:47,965 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-21 15:29:47,983 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-21 15:29:47,984 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2021-12-21 15:29:47,990 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-21 15:29:48,776 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 19 treesize of output 11 [2021-12-21 15:29:48,783 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 19 treesize of output 11 [2021-12-21 15:29:48,874 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-12-21 15:29:48,959 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 33 proven. 35 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-21 15:29:48,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:29:49,340 WARN L838 $PredicateComparison]: unable to prove that (or (and (forall ((v_ArrVal_1520 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| v_ArrVal_1520) |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.offset| 24)) 0)) (forall ((v_ArrVal_1522 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| v_ArrVal_1522) |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.offset| 24)) 0))) (forall ((v_ArrVal_1523 Int)) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base|) (+ |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.offset| 8) v_ArrVal_1523)) |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#from~0#1.base|) |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#from~0#1.offset|) 18446744073709551616) 0)))) is different from false [2021-12-21 15:29:49,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525004303] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:29:49,361 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 15:29:49,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19] total 32 [2021-12-21 15:29:49,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618611024] [2021-12-21 15:29:49,366 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 15:29:49,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-21 15:29:49,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:29:49,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-21 15:29:49,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1127, Unknown=1, NotChecked=68, Total=1332 [2021-12-21 15:29:49,368 INFO L87 Difference]: Start difference. First operand 469 states and 602 transitions. Second operand has 32 states, 31 states have (on average 4.935483870967742) internal successors, (153), 29 states have internal predecessors, (153), 16 states have call successors, (27), 6 states have call predecessors, (27), 8 states have return successors, (26), 13 states have call predecessors, (26), 16 states have call successors, (26) [2021-12-21 15:29:52,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:29:52,147 INFO L93 Difference]: Finished difference Result 1147 states and 1590 transitions. [2021-12-21 15:29:52,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-12-21 15:29:52,147 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 4.935483870967742) internal successors, (153), 29 states have internal predecessors, (153), 16 states have call successors, (27), 6 states have call predecessors, (27), 8 states have return successors, (26), 13 states have call predecessors, (26), 16 states have call successors, (26) Word has length 124 [2021-12-21 15:29:52,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:29:52,151 INFO L225 Difference]: With dead ends: 1147 [2021-12-21 15:29:52,151 INFO L226 Difference]: Without dead ends: 832 [2021-12-21 15:29:52,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 198 SyntacticMatches, 17 SemanticMatches, 55 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1185 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=283, Invalid=2800, Unknown=1, NotChecked=108, Total=3192 [2021-12-21 15:29:52,154 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 460 mSDsluCounter, 4922 mSDsCounter, 0 mSdLazyCounter, 3083 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 5478 SdHoareTripleChecker+Invalid, 4111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 3083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 649 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:29:52,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [549 Valid, 5478 Invalid, 4111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 3083 Invalid, 0 Unknown, 649 Unchecked, 2.1s Time] [2021-12-21 15:29:52,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2021-12-21 15:29:52,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 604. [2021-12-21 15:29:52,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 421 states have (on average 1.1377672209026128) internal successors, (479), 429 states have internal predecessors, (479), 132 states have call successors, (132), 45 states have call predecessors, (132), 50 states have return successors, (182), 129 states have call predecessors, (182), 131 states have call successors, (182) [2021-12-21 15:29:52,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 793 transitions. [2021-12-21 15:29:52,193 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 793 transitions. Word has length 124 [2021-12-21 15:29:52,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:29:52,193 INFO L470 AbstractCegarLoop]: Abstraction has 604 states and 793 transitions. [2021-12-21 15:29:52,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 4.935483870967742) internal successors, (153), 29 states have internal predecessors, (153), 16 states have call successors, (27), 6 states have call predecessors, (27), 8 states have return successors, (26), 13 states have call predecessors, (26), 16 states have call successors, (26) [2021-12-21 15:29:52,194 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 793 transitions. [2021-12-21 15:29:52,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-21 15:29:52,196 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:29:52,196 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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, 1] [2021-12-21 15:29:52,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-21 15:29:52,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:29:52,419 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:29:52,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:29:52,420 INFO L85 PathProgramCache]: Analyzing trace with hash -734369057, now seen corresponding path program 1 times [2021-12-21 15:29:52,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:29:52,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602151775] [2021-12-21 15:29:52,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:52,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:29:52,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:52,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:29:52,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:52,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 15:29:52,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:52,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:29:52,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:52,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:29:52,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:52,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 15:29:52,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:52,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-21 15:29:52,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:52,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 15:29:52,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:52,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 15:29:52,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:52,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 15:29:52,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:52,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 15:29:52,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:52,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 15:29:52,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:52,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 15:29:52,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:52,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 15:29:52,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:52,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 15:29:52,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:52,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-21 15:29:52,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:52,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 15:29:52,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:52,762 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-12-21 15:29:52,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:29:52,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602151775] [2021-12-21 15:29:52,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602151775] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:29:52,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:29:52,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-21 15:29:52,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732665208] [2021-12-21 15:29:52,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:29:52,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-21 15:29:52,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:29:52,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-21 15:29:52,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-12-21 15:29:52,764 INFO L87 Difference]: Start difference. First operand 604 states and 793 transitions. Second operand has 13 states, 11 states have (on average 6.636363636363637) internal successors, (73), 10 states have internal predecessors, (73), 6 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2021-12-21 15:29:53,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:29:53,855 INFO L93 Difference]: Finished difference Result 926 states and 1244 transitions. [2021-12-21 15:29:53,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 15:29:53,855 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.636363636363637) internal successors, (73), 10 states have internal predecessors, (73), 6 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) Word has length 130 [2021-12-21 15:29:53,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:29:53,875 INFO L225 Difference]: With dead ends: 926 [2021-12-21 15:29:53,891 INFO L226 Difference]: Without dead ends: 805 [2021-12-21 15:29:53,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2021-12-21 15:29:53,894 INFO L933 BasicCegarLoop]: 329 mSDtfsCounter, 361 mSDsluCounter, 1818 mSDsCounter, 0 mSdLazyCounter, 2010 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 2147 SdHoareTripleChecker+Invalid, 2309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 2010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-21 15:29:53,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [412 Valid, 2147 Invalid, 2309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 2010 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-21 15:29:53,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2021-12-21 15:29:53,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 753. [2021-12-21 15:29:53,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 516 states have (on average 1.1317829457364341) internal successors, (584), 521 states have internal predecessors, (584), 180 states have call successors, (180), 48 states have call predecessors, (180), 56 states have return successors, (261), 183 states have call predecessors, (261), 179 states have call successors, (261) [2021-12-21 15:29:53,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1025 transitions. [2021-12-21 15:29:53,961 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1025 transitions. Word has length 130 [2021-12-21 15:29:53,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:29:53,962 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 1025 transitions. [2021-12-21 15:29:53,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.636363636363637) internal successors, (73), 10 states have internal predecessors, (73), 6 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2021-12-21 15:29:53,962 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1025 transitions. [2021-12-21 15:29:53,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-21 15:29:53,964 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:29:53,964 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-12-21 15:29:53,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-21 15:29:53,965 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:29:53,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:29:53,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1720956240, now seen corresponding path program 1 times [2021-12-21 15:29:53,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:29:53,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074474519] [2021-12-21 15:29:53,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:53,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:29:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:54,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:29:54,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:54,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 15:29:54,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:54,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:29:54,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:54,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:29:54,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:54,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 15:29:54,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:54,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-21 15:29:54,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:54,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 15:29:54,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:54,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:29:54,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:54,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 15:29:54,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:54,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 15:29:54,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:54,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 15:29:54,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:54,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 15:29:54,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:54,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-21 15:29:54,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:54,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 15:29:54,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:54,748 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-12-21 15:29:54,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:29:54,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074474519] [2021-12-21 15:29:54,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074474519] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:29:54,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612957362] [2021-12-21 15:29:54,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:54,749 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:29:54,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:29:54,764 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) [2021-12-21 15:29:54,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-21 15:29:55,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:55,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 2702 conjuncts, 49 conjunts are in the unsatisfiable core [2021-12-21 15:29:55,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:29:55,512 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 [2021-12-21 15:29:56,162 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 20 treesize of output 8 [2021-12-21 15:29:56,211 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 39 proven. 16 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-21 15:29:56,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:29:56,334 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 40 treesize of output 34 [2021-12-21 15:29:56,459 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-12-21 15:29:56,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612957362] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-21 15:29:56,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-21 15:29:56,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [22, 20] total 42 [2021-12-21 15:29:56,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362541568] [2021-12-21 15:29:56,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:29:56,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-21 15:29:56,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:29:56,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-21 15:29:56,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1616, Unknown=0, NotChecked=0, Total=1722 [2021-12-21 15:29:56,461 INFO L87 Difference]: Start difference. First operand 753 states and 1025 transitions. Second operand has 11 states, 10 states have (on average 6.4) internal successors, (64), 9 states have internal predecessors, (64), 5 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-21 15:29:56,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:29:56,930 INFO L93 Difference]: Finished difference Result 865 states and 1214 transitions. [2021-12-21 15:29:56,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 15:29:56,931 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.4) internal successors, (64), 9 states have internal predecessors, (64), 5 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 130 [2021-12-21 15:29:56,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:29:56,934 INFO L225 Difference]: With dead ends: 865 [2021-12-21 15:29:56,934 INFO L226 Difference]: Without dead ends: 863 [2021-12-21 15:29:56,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 255 SyntacticMatches, 12 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 633 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=136, Invalid=2026, Unknown=0, NotChecked=0, Total=2162 [2021-12-21 15:29:56,936 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 106 mSDsluCounter, 2746 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 3103 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 15:29:56,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 3103 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 15:29:56,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2021-12-21 15:29:56,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 757. [2021-12-21 15:29:56,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 519 states have (on average 1.1310211946050097) internal successors, (587), 524 states have internal predecessors, (587), 180 states have call successors, (180), 49 states have call predecessors, (180), 57 states have return successors, (261), 183 states have call predecessors, (261), 179 states have call successors, (261) [2021-12-21 15:29:56,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 1028 transitions. [2021-12-21 15:29:56,993 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 1028 transitions. Word has length 130 [2021-12-21 15:29:56,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:29:56,993 INFO L470 AbstractCegarLoop]: Abstraction has 757 states and 1028 transitions. [2021-12-21 15:29:56,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.4) internal successors, (64), 9 states have internal predecessors, (64), 5 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-21 15:29:56,994 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 1028 transitions. [2021-12-21 15:29:56,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-21 15:29:56,996 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:29:56,996 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-21 15:29:57,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-12-21 15:29:57,211 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,SelfDestructingSolverStorable24 [2021-12-21 15:29:57,211 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:29:57,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:29:57,212 INFO L85 PathProgramCache]: Analyzing trace with hash 942287315, now seen corresponding path program 1 times [2021-12-21 15:29:57,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:29:57,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807572571] [2021-12-21 15:29:57,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:57,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:29:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:57,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:29:57,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:57,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 15:29:57,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:57,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 15:29:57,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:57,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:29:57,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:57,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 15:29:57,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:57,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 15:29:57,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:57,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 15:29:57,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:57,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-21 15:29:57,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:57,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-21 15:29:57,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:57,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-21 15:29:57,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:57,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 15:29:57,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:57,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 15:29:57,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:57,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 15:29:57,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:57,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 15:29:57,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:57,670 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-12-21 15:29:57,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:29:57,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807572571] [2021-12-21 15:29:57,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807572571] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:29:57,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132639485] [2021-12-21 15:29:57,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:29:57,670 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:29:57,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:29:57,671 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) [2021-12-21 15:29:57,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-21 15:29:58,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:29:58,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 2687 conjuncts, 90 conjunts are in the unsatisfiable core [2021-12-21 15:29:58,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:29:58,233 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-21 15:29:58,238 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-21 15:29:58,754 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-21 15:29:58,754 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 25 [2021-12-21 15:29:58,758 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-21 15:29:58,762 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 15:29:58,768 INFO L353 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-12-21 15:29:58,768 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-12-21 15:29:58,775 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2021-12-21 15:29:59,802 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-12-21 15:29:59,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:29:59,808 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 15:29:59,810 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-21 15:29:59,810 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2021-12-21 15:29:59,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:29:59,815 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2021-12-21 15:30:00,348 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 32 proven. 35 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-21 15:30:00,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:30:01,014 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 58 treesize of output 52 [2021-12-21 15:30:01,064 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1736 (Array Int Int)) (|ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| Int)) (or (not (<= (mod (select (select (store |c_#memory_int| |ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| v_ArrVal_1736) |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.offset| 16)) 18446744073709551616) 0)) (let ((.cse0 (+ |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.offset| 8)) (.cse1 (+ |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.offset| 8))) (and (= (select (select (store |c_#memory_$Pointer$.offset| |ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| (store (select |c_#memory_$Pointer$.offset| |ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base|) .cse0 |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_#t~ite504#1.offset|)) |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.base|) .cse1) 0) (= .cse0 .cse1) (= |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_#t~ite504#1.base| 0) (= |ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.base|))))) is different from false [2021-12-21 15:30:01,095 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1736 (Array Int Int)) (|ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| Int)) (or (and (= (+ |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.offset| 8) (+ |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.offset| 8)) (= |ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.base|)) (not (<= (mod (select (select (store |c_#memory_int| |ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| v_ArrVal_1736) |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.offset| 16)) 18446744073709551616) 0)))) is different from false [2021-12-21 15:30:01,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132639485] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:30:01,116 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 15:30:01,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 23] total 36 [2021-12-21 15:30:01,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268862362] [2021-12-21 15:30:01,116 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 15:30:01,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-12-21 15:30:01,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:30:01,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-12-21 15:30:01,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1650, Unknown=2, NotChecked=166, Total=1980 [2021-12-21 15:30:01,117 INFO L87 Difference]: Start difference. First operand 757 states and 1028 transitions. Second operand has 36 states, 34 states have (on average 4.323529411764706) internal successors, (147), 31 states have internal predecessors, (147), 15 states have call successors, (29), 6 states have call predecessors, (29), 8 states have return successors, (28), 14 states have call predecessors, (28), 15 states have call successors, (28) [2021-12-21 15:30:04,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:30:04,990 INFO L93 Difference]: Finished difference Result 1689 states and 2431 transitions. [2021-12-21 15:30:04,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-12-21 15:30:04,990 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 4.323529411764706) internal successors, (147), 31 states have internal predecessors, (147), 15 states have call successors, (29), 6 states have call predecessors, (29), 8 states have return successors, (28), 14 states have call predecessors, (28), 15 states have call successors, (28) Word has length 129 [2021-12-21 15:30:04,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:30:04,995 INFO L225 Difference]: With dead ends: 1689 [2021-12-21 15:30:04,996 INFO L226 Difference]: Without dead ends: 1278 [2021-12-21 15:30:04,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 202 SyntacticMatches, 10 SemanticMatches, 76 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1509 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=506, Invalid=5200, Unknown=2, NotChecked=298, Total=6006 [2021-12-21 15:30:04,998 INFO L933 BasicCegarLoop]: 458 mSDtfsCounter, 521 mSDsluCounter, 5112 mSDsCounter, 0 mSdLazyCounter, 5316 mSolverCounterSat, 407 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 5570 SdHoareTripleChecker+Invalid, 8423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 407 IncrementalHoareTripleChecker+Valid, 5316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2700 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-21 15:30:04,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [612 Valid, 5570 Invalid, 8423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [407 Valid, 5316 Invalid, 0 Unknown, 2700 Unchecked, 2.6s Time] [2021-12-21 15:30:04,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2021-12-21 15:30:05,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 887. [2021-12-21 15:30:05,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 631 states have (on average 1.12202852614897) internal successors, (708), 640 states have internal predecessors, (708), 184 states have call successors, (184), 59 states have call predecessors, (184), 71 states have return successors, (271), 187 states have call predecessors, (271), 183 states have call successors, (271) [2021-12-21 15:30:05,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1163 transitions. [2021-12-21 15:30:05,075 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1163 transitions. Word has length 129 [2021-12-21 15:30:05,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:30:05,075 INFO L470 AbstractCegarLoop]: Abstraction has 887 states and 1163 transitions. [2021-12-21 15:30:05,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 4.323529411764706) internal successors, (147), 31 states have internal predecessors, (147), 15 states have call successors, (29), 6 states have call predecessors, (29), 8 states have return successors, (28), 14 states have call predecessors, (28), 15 states have call successors, (28) [2021-12-21 15:30:05,075 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1163 transitions. [2021-12-21 15:30:05,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-21 15:30:05,077 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:30:05,078 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-12-21 15:30:05,100 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-12-21 15:30:05,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-21 15:30:05,297 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:30:05,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:30:05,298 INFO L85 PathProgramCache]: Analyzing trace with hash -576629289, now seen corresponding path program 1 times [2021-12-21 15:30:05,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:30:05,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516487769] [2021-12-21 15:30:05,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:30:05,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:30:05,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:05,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:30:05,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:05,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 15:30:05,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:05,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:30:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:05,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:30:05,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:05,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 15:30:05,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:05,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-21 15:30:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:05,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 15:30:05,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:05,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 15:30:05,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:05,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 15:30:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:05,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 15:30:05,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:05,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 15:30:05,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:05,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-21 15:30:05,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:05,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-21 15:30:05,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:05,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-21 15:30:05,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:05,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-21 15:30:05,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:05,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-21 15:30:05,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:05,538 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-21 15:30:05,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:30:05,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516487769] [2021-12-21 15:30:05,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516487769] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:30:05,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482439528] [2021-12-21 15:30:05,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:30:05,539 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:30:05,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:30:05,541 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:30:05,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-21 15:30:05,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:06,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 2706 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-21 15:30:06,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:30:06,239 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 48 proven. 8 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-21 15:30:06,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:30:06,646 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-21 15:30:06,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482439528] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:30:06,647 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 15:30:06,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 11] total 23 [2021-12-21 15:30:06,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510213210] [2021-12-21 15:30:06,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 15:30:06,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-21 15:30:06,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:30:06,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-21 15:30:06,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=458, Unknown=0, NotChecked=0, Total=506 [2021-12-21 15:30:06,648 INFO L87 Difference]: Start difference. First operand 887 states and 1163 transitions. Second operand has 23 states, 20 states have (on average 5.25) internal successors, (105), 17 states have internal predecessors, (105), 5 states have call successors, (29), 5 states have call predecessors, (29), 7 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2021-12-21 15:30:07,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:30:07,780 INFO L93 Difference]: Finished difference Result 1443 states and 1916 transitions. [2021-12-21 15:30:07,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-21 15:30:07,780 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 5.25) internal successors, (105), 17 states have internal predecessors, (105), 5 states have call successors, (29), 5 states have call predecessors, (29), 7 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) Word has length 134 [2021-12-21 15:30:07,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:30:07,783 INFO L225 Difference]: With dead ends: 1443 [2021-12-21 15:30:07,783 INFO L226 Difference]: Without dead ends: 758 [2021-12-21 15:30:07,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 289 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=170, Invalid=1236, Unknown=0, NotChecked=0, Total=1406 [2021-12-21 15:30:07,786 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 234 mSDsluCounter, 3636 mSDsCounter, 0 mSdLazyCounter, 2226 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 3946 SdHoareTripleChecker+Invalid, 2432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 2226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-21 15:30:07,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 3946 Invalid, 2432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 2226 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-21 15:30:07,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2021-12-21 15:30:07,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 719. [2021-12-21 15:30:07,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 502 states have (on average 1.1055776892430278) internal successors, (555), 509 states have internal predecessors, (555), 156 states have call successors, (156), 53 states have call predecessors, (156), 60 states have return successors, (222), 156 states have call predecessors, (222), 155 states have call successors, (222) [2021-12-21 15:30:07,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 933 transitions. [2021-12-21 15:30:07,836 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 933 transitions. Word has length 134 [2021-12-21 15:30:07,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:30:07,837 INFO L470 AbstractCegarLoop]: Abstraction has 719 states and 933 transitions. [2021-12-21 15:30:07,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 5.25) internal successors, (105), 17 states have internal predecessors, (105), 5 states have call successors, (29), 5 states have call predecessors, (29), 7 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2021-12-21 15:30:07,837 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 933 transitions. [2021-12-21 15:30:07,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-21 15:30:07,839 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:30:07,839 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-21 15:30:07,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-12-21 15:30:08,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-21 15:30:08,060 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:30:08,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:30:08,060 INFO L85 PathProgramCache]: Analyzing trace with hash -2016036362, now seen corresponding path program 1 times [2021-12-21 15:30:08,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:30:08,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961819211] [2021-12-21 15:30:08,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:30:08,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:30:08,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:08,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:30:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:08,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 15:30:08,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:08,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:30:08,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:08,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:30:08,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:08,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 15:30:08,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:08,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-21 15:30:08,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:08,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 15:30:08,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:08,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 15:30:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:08,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 15:30:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:08,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 15:30:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:08,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 15:30:08,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:08,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-21 15:30:08,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:08,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-21 15:30:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:08,500 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-12-21 15:30:08,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:30:08,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961819211] [2021-12-21 15:30:08,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961819211] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:30:08,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277947838] [2021-12-21 15:30:08,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:30:08,501 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:30:08,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:30:08,508 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:30:08,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-21 15:30:08,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:30:08,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 2688 conjuncts, 77 conjunts are in the unsatisfiable core [2021-12-21 15:30:08,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:30:08,994 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-21 15:30:09,190 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-21 15:30:09,190 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-21 15:30:09,201 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-21 15:30:09,692 INFO L353 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-12-21 15:30:09,692 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22