./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_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 4c8e70dc7f77f825f3ef2e89303bbf356ceb3a21ef4dcf0b5c90667d3d62b0fd --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 00:12:54,433 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 00:12:54,434 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 00:12:54,487 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 00:12:54,489 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 00:12:54,492 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 00:12:54,494 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 00:12:54,495 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 00:12:54,497 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 00:12:54,499 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 00:12:54,500 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 00:12:54,501 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 00:12:54,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 00:12:54,505 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 00:12:54,507 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 00:12:54,508 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 00:12:54,509 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 00:12:54,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 00:12:54,511 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 00:12:54,517 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 00:12:54,518 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 00:12:54,521 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 00:12:54,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 00:12:54,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 00:12:54,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 00:12:54,526 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 00:12:54,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 00:12:54,527 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 00:12:54,528 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 00:12:54,529 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 00:12:54,529 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 00:12:54,530 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 00:12:54,530 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 00:12:54,531 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 00:12:54,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 00:12:54,533 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 00:12:54,533 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 00:12:54,534 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 00:12:54,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 00:12:54,534 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 00:12:54,535 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 00:12:54,535 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 00:12:54,560 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 00:12:54,560 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 00:12:54,560 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 00:12:54,560 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 00:12:54,561 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 00:12:54,561 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 00:12:54,562 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 00:12:54,562 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 00:12:54,562 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 00:12:54,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 00:12:54,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 00:12:54,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 00:12:54,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 00:12:54,563 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 00:12:54,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 00:12:54,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 00:12:54,564 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 00:12:54,564 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 00:12:54,564 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 00:12:54,564 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 00:12:54,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 00:12:54,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 00:12:54,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 00:12:54,565 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 00:12:54,565 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 00:12:54,565 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 00:12:54,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 00:12:54,566 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 00:12:54,567 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 00:12:54,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 00:12:54,567 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 00:12:54,567 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c8e70dc7f77f825f3ef2e89303bbf356ceb3a21ef4dcf0b5c90667d3d62b0fd [2021-12-18 00:12:54,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 00:12:54,786 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 00:12:54,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 00:12:54,789 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 00:12:54,790 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 00:12:54,791 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i [2021-12-18 00:12:54,831 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91906bf52/4b1c2d7acaeb4c00afc7d38ee1329e9c/FLAGd3c7282d5 [2021-12-18 00:12:55,444 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 00:12:55,445 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i [2021-12-18 00:12:55,480 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91906bf52/4b1c2d7acaeb4c00afc7d38ee1329e9c/FLAGd3c7282d5 [2021-12-18 00:12:55,861 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91906bf52/4b1c2d7acaeb4c00afc7d38ee1329e9c [2021-12-18 00:12:55,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 00:12:55,867 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 00:12:55,869 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 00:12:55,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 00:12:55,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 00:12:55,871 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 12:12:55" (1/1) ... [2021-12-18 00:12:55,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e3e4730 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:12:55, skipping insertion in model container [2021-12-18 00:12:55,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 12:12:55" (1/1) ... [2021-12-18 00:12:55,877 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 00:12:55,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 00:12:56,125 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4501,4514] [2021-12-18 00:12:56,131 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4561,4574] [2021-12-18 00:12:56,723 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:12:56,724 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:12:56,724 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:12:56,725 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:12:56,726 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:12:56,734 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:12:56,738 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:12:56,739 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:12:56,740 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:12:56,947 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-18 00:12:56,947 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-18 00:12:56,948 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-18 00:12:56,949 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-18 00:12:56,949 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-18 00:12:56,950 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-18 00:12:56,950 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-18 00:12:56,951 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-18 00:12:56,951 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-18 00:12:56,951 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-18 00:12:57,046 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-18 00:12:57,143 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:12:57,144 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:12:57,190 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 00:12:57,225 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 00:12:57,234 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4501,4514] [2021-12-18 00:12:57,240 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i[4561,4574] [2021-12-18 00:12:57,267 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:12:57,267 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:12:57,268 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:12:57,268 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:12:57,268 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:12:57,272 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:12:57,273 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:12:57,274 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:12:57,274 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:12:57,303 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-18 00:12:57,304 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-18 00:12:57,304 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-18 00:12:57,304 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-18 00:12:57,305 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-18 00:12:57,305 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-18 00:12:57,305 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-18 00:12:57,306 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-18 00:12:57,306 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-18 00:12:57,306 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-18 00:12:57,323 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-18 00:12:57,365 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:12:57,366 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:12:57,390 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 00:12:57,529 INFO L208 MainTranslator]: Completed translation [2021-12-18 00:12:57,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:12:57 WrapperNode [2021-12-18 00:12:57,530 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 00:12:57,530 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 00:12:57,530 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 00:12:57,531 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 00:12:57,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:12:57" (1/1) ... [2021-12-18 00:12:57,591 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:12:57" (1/1) ... [2021-12-18 00:12:57,644 INFO L137 Inliner]: procedures = 691, calls = 2651, calls flagged for inlining = 65, calls inlined = 11, statements flattened = 934 [2021-12-18 00:12:57,644 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 00:12:57,645 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 00:12:57,645 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 00:12:57,645 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 00:12:57,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:12:57" (1/1) ... [2021-12-18 00:12:57,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:12:57" (1/1) ... [2021-12-18 00:12:57,657 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:12:57" (1/1) ... [2021-12-18 00:12:57,657 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:12:57" (1/1) ... [2021-12-18 00:12:57,680 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:12:57" (1/1) ... [2021-12-18 00:12:57,682 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:12:57" (1/1) ... [2021-12-18 00:12:57,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:12:57" (1/1) ... [2021-12-18 00:12:57,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 00:12:57,692 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 00:12:57,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 00:12:57,692 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 00:12:57,711 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:12:57" (1/1) ... [2021-12-18 00:12:57,719 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 00:12:57,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:12:57,737 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) [2021-12-18 00:12:57,756 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 [2021-12-18 00:12:57,764 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-12-18 00:12:57,764 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-12-18 00:12:57,764 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-12-18 00:12:57,765 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-12-18 00:12:57,765 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-18 00:12:57,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 00:12:57,765 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-18 00:12:57,765 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-18 00:12:57,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 00:12:57,766 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-18 00:12:57,766 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-18 00:12:57,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 00:12:57,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 00:12:57,767 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2021-12-18 00:12:57,767 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2021-12-18 00:12:57,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 00:12:57,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 00:12:57,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 00:12:57,768 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-18 00:12:57,768 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-18 00:12:57,768 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-12-18 00:12:57,768 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-12-18 00:12:57,768 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-18 00:12:57,769 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-18 00:12:57,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 00:12:57,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 00:12:57,769 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2021-12-18 00:12:57,770 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2021-12-18 00:12:57,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 00:12:57,770 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-18 00:12:57,770 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-18 00:12:57,770 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-18 00:12:57,771 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-18 00:12:57,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 00:12:57,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 00:12:57,992 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 00:12:57,994 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 00:12:58,512 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 00:12:58,519 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 00:12:58,520 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-18 00:12:58,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 12:12:58 BoogieIcfgContainer [2021-12-18 00:12:58,522 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 00:12:58,523 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 00:12:58,523 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 00:12:58,527 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 00:12:58,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 12:12:55" (1/3) ... [2021-12-18 00:12:58,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d3e129e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 12:12:58, skipping insertion in model container [2021-12-18 00:12:58,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:12:57" (2/3) ... [2021-12-18 00:12:58,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d3e129e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 12:12:58, skipping insertion in model container [2021-12-18 00:12:58,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 12:12:58" (3/3) ... [2021-12-18 00:12:58,529 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_eq_byte_buf_harness.i [2021-12-18 00:12:58,533 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 00:12:58,533 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 00:12:58,572 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 00:12:58,577 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 [2021-12-18 00:12:58,578 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 00:12:58,601 INFO L276 IsEmpty]: Start isEmpty. Operand has 161 states, 106 states have (on average 1.2547169811320755) internal successors, (133), 107 states have internal predecessors, (133), 42 states have call successors, (42), 11 states have call predecessors, (42), 11 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-12-18 00:12:58,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-18 00:12:58,622 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:12:58,622 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:12:58,623 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:12:58,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:12:58,627 INFO L85 PathProgramCache]: Analyzing trace with hash -745875764, now seen corresponding path program 1 times [2021-12-18 00:12:58,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:12:58,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962238217] [2021-12-18 00:12:58,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:12:58,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:12:58,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:59,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:12:59,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:59,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:12:59,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:59,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:12:59,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:59,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:12:59,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:59,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 00:12:59,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:59,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 00:12:59,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:59,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 00:12:59,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:59,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:12:59,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:59,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:12:59,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:59,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-18 00:12:59,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:59,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 00:12:59,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:59,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:12:59,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:59,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:12:59,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:59,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-18 00:12:59,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:59,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-18 00:12:59,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:59,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-18 00:12:59,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:59,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-18 00:12:59,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:59,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:12:59,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:59,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:12:59,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:59,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-18 00:12:59,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:59,241 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-12-18 00:12:59,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:12:59,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962238217] [2021-12-18 00:12:59,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962238217] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:12:59,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 00:12:59,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 00:12:59,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341846594] [2021-12-18 00:12:59,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:12:59,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 00:12:59,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:12:59,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 00:12:59,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 00:12:59,265 INFO L87 Difference]: Start difference. First operand has 161 states, 106 states have (on average 1.2547169811320755) internal successors, (133), 107 states have internal predecessors, (133), 42 states have call successors, (42), 11 states have call predecessors, (42), 11 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-18 00:12:59,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:12:59,565 INFO L93 Difference]: Finished difference Result 320 states and 462 transitions. [2021-12-18 00:12:59,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 00:12:59,567 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 127 [2021-12-18 00:12:59,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:12:59,573 INFO L225 Difference]: With dead ends: 320 [2021-12-18 00:12:59,573 INFO L226 Difference]: Without dead ends: 157 [2021-12-18 00:12:59,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 00:12:59,578 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 143 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 00:12:59,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 287 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 00:12:59,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-12-18 00:12:59,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 155. [2021-12-18 00:12:59,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 101 states have (on average 1.2277227722772277) internal successors, (124), 102 states have internal predecessors, (124), 42 states have call successors, (42), 11 states have call predecessors, (42), 11 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-12-18 00:12:59,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 207 transitions. [2021-12-18 00:12:59,608 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 207 transitions. Word has length 127 [2021-12-18 00:12:59,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:12:59,608 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 207 transitions. [2021-12-18 00:12:59,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-18 00:12:59,609 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 207 transitions. [2021-12-18 00:12:59,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-18 00:12:59,623 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:12:59,623 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:12:59,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 00:12:59,623 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:12:59,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:12:59,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1855366526, now seen corresponding path program 1 times [2021-12-18 00:12:59,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:12:59,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137146614] [2021-12-18 00:12:59,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:12:59,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:12:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:59,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:12:59,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:59,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:12:59,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:59,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:12:59,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:59,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:12:59,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:59,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 00:12:59,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:59,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 00:12:59,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:59,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 00:12:59,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:59,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:12:59,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:59,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:12:59,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:59,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-18 00:12:59,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:59,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 00:12:59,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:59,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:12:59,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:59,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:12:59,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:59,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-18 00:12:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:59,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-18 00:12:59,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:59,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-18 00:12:59,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:59,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-18 00:12:59,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:59,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:12:59,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:59,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:12:59,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:59,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-18 00:12:59,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:59,978 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2021-12-18 00:12:59,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:12:59,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137146614] [2021-12-18 00:12:59,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137146614] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:12:59,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736497652] [2021-12-18 00:12:59,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:12:59,979 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:12:59,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:12:59,983 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) [2021-12-18 00:12:59,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-18 00:13:00,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:00,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 2764 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-18 00:13:00,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:13:00,673 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-12-18 00:13:00,673 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:13:00,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736497652] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:13:00,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:13:00,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2021-12-18 00:13:00,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786626764] [2021-12-18 00:13:00,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:13:00,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 00:13:00,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:13:00,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 00:13:00,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-18 00:13:00,676 INFO L87 Difference]: Start difference. First operand 155 states and 207 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-18 00:13:00,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:13:00,850 INFO L93 Difference]: Finished difference Result 276 states and 373 transitions. [2021-12-18 00:13:00,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 00:13:00,851 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 127 [2021-12-18 00:13:00,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:13:00,852 INFO L225 Difference]: With dead ends: 276 [2021-12-18 00:13:00,853 INFO L226 Difference]: Without dead ends: 158 [2021-12-18 00:13:00,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-12-18 00:13:00,854 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 228 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 00:13:00,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 430 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 00:13:00,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-12-18 00:13:00,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2021-12-18 00:13:00,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 103 states have (on average 1.2233009708737863) internal successors, (126), 105 states have internal predecessors, (126), 42 states have call successors, (42), 11 states have call predecessors, (42), 12 states have return successors, (43), 41 states have call predecessors, (43), 41 states have call successors, (43) [2021-12-18 00:13:00,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 211 transitions. [2021-12-18 00:13:00,864 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 211 transitions. Word has length 127 [2021-12-18 00:13:00,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:13:00,865 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 211 transitions. [2021-12-18 00:13:00,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-18 00:13:00,865 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 211 transitions. [2021-12-18 00:13:00,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-18 00:13:00,866 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:13:00,867 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:13:00,889 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-18 00:13:01,086 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 [2021-12-18 00:13:01,086 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:13:01,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:13:01,087 INFO L85 PathProgramCache]: Analyzing trace with hash -644904243, now seen corresponding path program 1 times [2021-12-18 00:13:01,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:13:01,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651962453] [2021-12-18 00:13:01,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:13:01,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:13:01,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:01,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:13:01,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:01,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:13:01,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:01,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:13:01,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:01,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:13:01,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:01,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 00:13:01,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:01,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 00:13:01,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:01,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 00:13:01,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:01,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:13:01,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:01,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:13:01,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:01,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 00:13:01,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:01,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:13:01,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:01,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:13:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:01,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-18 00:13:01,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:01,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-18 00:13:01,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:01,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-18 00:13:01,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:01,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-18 00:13:01,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:01,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-18 00:13:01,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:01,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:13:01,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:01,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:13:01,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:01,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-18 00:13:01,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:01,332 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2021-12-18 00:13:01,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:13:01,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651962453] [2021-12-18 00:13:01,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651962453] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:13:01,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195257354] [2021-12-18 00:13:01,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:13:01,333 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:13:01,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:13:01,347 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) [2021-12-18 00:13:01,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-18 00:13:01,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:01,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 2781 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-18 00:13:01,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:13:02,099 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-12-18 00:13:02,099 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:13:02,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195257354] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:13:02,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:13:02,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-12-18 00:13:02,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270630446] [2021-12-18 00:13:02,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:13:02,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 00:13:02,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:13:02,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 00:13:02,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-18 00:13:02,103 INFO L87 Difference]: Start difference. First operand 158 states and 211 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-12-18 00:13:02,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:13:02,284 INFO L93 Difference]: Finished difference Result 262 states and 350 transitions. [2021-12-18 00:13:02,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 00:13:02,285 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 133 [2021-12-18 00:13:02,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:13:02,289 INFO L225 Difference]: With dead ends: 262 [2021-12-18 00:13:02,289 INFO L226 Difference]: Without dead ends: 155 [2021-12-18 00:13:02,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-12-18 00:13:02,293 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 254 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 00:13:02,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 561 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 00:13:02,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-12-18 00:13:02,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2021-12-18 00:13:02,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 101 states have (on average 1.2178217821782178) internal successors, (123), 102 states have internal predecessors, (123), 42 states have call successors, (42), 11 states have call predecessors, (42), 11 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-12-18 00:13:02,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 206 transitions. [2021-12-18 00:13:02,313 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 206 transitions. Word has length 133 [2021-12-18 00:13:02,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:13:02,314 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 206 transitions. [2021-12-18 00:13:02,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-12-18 00:13:02,315 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 206 transitions. [2021-12-18 00:13:02,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-18 00:13:02,318 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:13:02,318 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 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] [2021-12-18 00:13:02,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-18 00:13:02,531 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 [2021-12-18 00:13:02,532 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:13:02,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:13:02,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1492661784, now seen corresponding path program 1 times [2021-12-18 00:13:02,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:13:02,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577374639] [2021-12-18 00:13:02,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:13:02,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:13:02,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:02,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:13:02,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:02,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:13:02,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:02,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:13:02,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:02,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:13:02,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:02,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 00:13:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:02,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 00:13:02,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:02,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 00:13:02,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:02,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:13:02,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:02,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:13:02,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:02,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 00:13:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:02,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:13:02,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:02,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:13:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:02,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-18 00:13:02,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:02,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-18 00:13:02,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:02,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-18 00:13:02,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:02,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-18 00:13:02,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:02,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 00:13:02,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:02,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:13:02,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:02,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:13:02,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:02,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 00:13:02,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:02,788 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-12-18 00:13:02,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:13:02,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577374639] [2021-12-18 00:13:02,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577374639] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:13:02,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173322140] [2021-12-18 00:13:02,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:13:02,789 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:13:02,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:13:02,804 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) [2021-12-18 00:13:02,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-18 00:13:03,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:03,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 2798 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-18 00:13:03,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:13:03,490 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2021-12-18 00:13:03,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:13:03,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173322140] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:13:03,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:13:03,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2021-12-18 00:13:03,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43775895] [2021-12-18 00:13:03,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:13:03,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 00:13:03,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:13:03,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 00:13:03,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-18 00:13:03,492 INFO L87 Difference]: Start difference. First operand 155 states and 206 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-18 00:13:03,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:13:03,703 INFO L93 Difference]: Finished difference Result 301 states and 401 transitions. [2021-12-18 00:13:03,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 00:13:03,703 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 139 [2021-12-18 00:13:03,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:13:03,704 INFO L225 Difference]: With dead ends: 301 [2021-12-18 00:13:03,704 INFO L226 Difference]: Without dead ends: 158 [2021-12-18 00:13:03,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-12-18 00:13:03,705 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 228 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 00:13:03,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 566 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 00:13:03,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-12-18 00:13:03,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2021-12-18 00:13:03,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 103 states have (on average 1.2135922330097086) internal successors, (125), 105 states have internal predecessors, (125), 42 states have call successors, (42), 11 states have call predecessors, (42), 12 states have return successors, (43), 41 states have call predecessors, (43), 41 states have call successors, (43) [2021-12-18 00:13:03,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 210 transitions. [2021-12-18 00:13:03,712 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 210 transitions. Word has length 139 [2021-12-18 00:13:03,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:13:03,713 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 210 transitions. [2021-12-18 00:13:03,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-18 00:13:03,713 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 210 transitions. [2021-12-18 00:13:03,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-18 00:13:03,714 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:13:03,714 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:13:03,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-18 00:13:03,933 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 [2021-12-18 00:13:03,934 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:13:03,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:13:03,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1524178125, now seen corresponding path program 1 times [2021-12-18 00:13:03,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:13:03,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876740185] [2021-12-18 00:13:03,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:13:03,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:13:04,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:04,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:13:04,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:04,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:13:04,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:04,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:13:04,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:04,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 00:13:04,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:04,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 00:13:04,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:04,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 00:13:04,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:04,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 00:13:04,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:04,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:13:04,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:04,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 00:13:04,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:04,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 00:13:04,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:04,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-18 00:13:04,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:04,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 00:13:04,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:04,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 00:13:04,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:04,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-18 00:13:04,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:04,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-18 00:13:04,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:04,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-18 00:13:04,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:04,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 00:13:04,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:04,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:13:04,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:04,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:13:04,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:04,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 00:13:04,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:04,319 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-12-18 00:13:04,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:13:04,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876740185] [2021-12-18 00:13:04,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876740185] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:13:04,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57294002] [2021-12-18 00:13:04,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:13:04,320 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:13:04,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:13:04,336 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) [2021-12-18 00:13:04,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-18 00:13:04,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:04,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 2803 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-18 00:13:04,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:13:04,996 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-12-18 00:13:04,996 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:13:04,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57294002] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:13:04,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:13:04,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2021-12-18 00:13:04,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651439223] [2021-12-18 00:13:04,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:13:04,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 00:13:04,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:13:04,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 00:13:04,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-12-18 00:13:05,000 INFO L87 Difference]: Start difference. First operand 158 states and 210 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2021-12-18 00:13:05,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:13:05,204 INFO L93 Difference]: Finished difference Result 265 states and 353 transitions. [2021-12-18 00:13:05,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 00:13:05,204 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) Word has length 141 [2021-12-18 00:13:05,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:13:05,205 INFO L225 Difference]: With dead ends: 265 [2021-12-18 00:13:05,205 INFO L226 Difference]: Without dead ends: 155 [2021-12-18 00:13:05,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-12-18 00:13:05,207 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 248 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 00:13:05,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 696 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 00:13:05,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-12-18 00:13:05,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2021-12-18 00:13:05,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 101 states have (on average 1.2079207920792079) internal successors, (122), 102 states have internal predecessors, (122), 42 states have call successors, (42), 11 states have call predecessors, (42), 11 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-12-18 00:13:05,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 205 transitions. [2021-12-18 00:13:05,213 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 205 transitions. Word has length 141 [2021-12-18 00:13:05,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:13:05,213 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 205 transitions. [2021-12-18 00:13:05,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2021-12-18 00:13:05,214 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 205 transitions. [2021-12-18 00:13:05,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-18 00:13:05,215 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:13:05,215 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 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] [2021-12-18 00:13:05,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-18 00:13:05,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:13:05,423 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:13:05,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:13:05,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1542450691, now seen corresponding path program 1 times [2021-12-18 00:13:05,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:13:05,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203037372] [2021-12-18 00:13:05,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:13:05,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:13:05,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:05,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:13:05,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:05,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:13:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:05,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:13:05,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:05,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 00:13:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:05,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 00:13:05,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:05,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 00:13:05,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:05,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 00:13:05,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:05,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:13:05,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:05,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 00:13:05,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:05,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 00:13:05,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:05,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-18 00:13:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:05,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 00:13:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:05,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 00:13:05,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:05,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-18 00:13:05,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:05,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-18 00:13:05,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:05,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-18 00:13:05,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:05,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-18 00:13:05,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:05,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:13:05,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:05,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:13:05,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:05,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-18 00:13:05,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:05,758 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-12-18 00:13:05,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:13:05,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203037372] [2021-12-18 00:13:05,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203037372] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:13:05,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 00:13:05,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-18 00:13:05,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279691344] [2021-12-18 00:13:05,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:13:05,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-18 00:13:05,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:13:05,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-18 00:13:05,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-18 00:13:05,760 INFO L87 Difference]: Start difference. First operand 155 states and 205 transitions. Second operand has 10 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) [2021-12-18 00:13:06,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:13:06,236 INFO L93 Difference]: Finished difference Result 169 states and 223 transitions. [2021-12-18 00:13:06,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-18 00:13:06,237 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) Word has length 145 [2021-12-18 00:13:06,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:13:06,238 INFO L225 Difference]: With dead ends: 169 [2021-12-18 00:13:06,238 INFO L226 Difference]: Without dead ends: 167 [2021-12-18 00:13:06,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-12-18 00:13:06,239 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 163 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-18 00:13:06,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 1020 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-18 00:13:06,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-12-18 00:13:06,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 164. [2021-12-18 00:13:06,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 107 states have (on average 1.1962616822429906) internal successors, (128), 109 states have internal predecessors, (128), 43 states have call successors, (43), 12 states have call predecessors, (43), 13 states have return successors, (46), 42 states have call predecessors, (46), 42 states have call successors, (46) [2021-12-18 00:13:06,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 217 transitions. [2021-12-18 00:13:06,246 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 217 transitions. Word has length 145 [2021-12-18 00:13:06,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:13:06,247 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 217 transitions. [2021-12-18 00:13:06,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) [2021-12-18 00:13:06,247 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 217 transitions. [2021-12-18 00:13:06,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-18 00:13:06,248 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:13:06,248 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:13:06,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-18 00:13:06,249 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:13:06,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:13:06,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1440515461, now seen corresponding path program 1 times [2021-12-18 00:13:06,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:13:06,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559162078] [2021-12-18 00:13:06,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:13:06,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:13:06,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:06,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:13:06,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:06,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:13:06,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:06,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:13:06,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:06,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 00:13:06,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:06,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 00:13:06,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:06,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 00:13:06,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:06,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 00:13:06,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:06,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:13:06,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:06,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 00:13:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:06,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 00:13:06,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:06,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-18 00:13:06,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:06,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 00:13:06,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:06,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 00:13:06,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:06,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-18 00:13:06,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:06,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-18 00:13:06,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:06,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-18 00:13:06,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:06,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-18 00:13:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:06,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:13:06,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:06,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:13:06,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:06,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-18 00:13:06,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:06,914 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2021-12-18 00:13:06,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:13:06,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559162078] [2021-12-18 00:13:06,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559162078] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:13:06,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128091403] [2021-12-18 00:13:06,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:13:06,914 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:13:06,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:13:06,915 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) [2021-12-18 00:13:06,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-18 00:13:07,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:13:07,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 2825 conjuncts, 88 conjunts are in the unsatisfiable core [2021-12-18 00:13:07,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:13:07,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-18 00:13:07,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 26 [2021-12-18 00:13:08,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 26 [2021-12-18 00:13:53,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 23 [2021-12-18 00:13:53,986 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 79 proven. 64 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-18 00:13:53,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:13:59,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128091403] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:13:59,184 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 00:13:59,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21] total 36 [2021-12-18 00:13:59,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852663601] [2021-12-18 00:13:59,184 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 00:13:59,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-12-18 00:13:59,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:13:59,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-12-18 00:13:59,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1979, Unknown=12, NotChecked=0, Total=2162 [2021-12-18 00:13:59,186 INFO L87 Difference]: Start difference. First operand 164 states and 217 transitions. Second operand has 36 states, 33 states have (on average 4.333333333333333) internal successors, (143), 34 states have internal predecessors, (143), 18 states have call successors, (41), 7 states have call predecessors, (41), 10 states have return successors, (40), 15 states have call predecessors, (40), 18 states have call successors, (40) [2021-12-18 00:14:18,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:14:18,529 INFO L93 Difference]: Finished difference Result 722 states and 1038 transitions. [2021-12-18 00:14:18,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-12-18 00:14:18,530 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 33 states have (on average 4.333333333333333) internal successors, (143), 34 states have internal predecessors, (143), 18 states have call successors, (41), 7 states have call predecessors, (41), 10 states have return successors, (40), 15 states have call predecessors, (40), 18 states have call successors, (40) Word has length 149 [2021-12-18 00:14:18,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:14:18,535 INFO L225 Difference]: With dead ends: 722 [2021-12-18 00:14:18,535 INFO L226 Difference]: Without dead ends: 609 [2021-12-18 00:14:18,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 250 SyntacticMatches, 23 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2034 ImplicationChecksByTransitivity, 64.8s TimeCoverageRelationStatistics Valid=588, Invalid=6032, Unknown=22, NotChecked=0, Total=6642 [2021-12-18 00:14:18,538 INFO L933 BasicCegarLoop]: 356 mSDtfsCounter, 651 mSDsluCounter, 3252 mSDsCounter, 0 mSdLazyCounter, 6521 mSolverCounterSat, 796 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 3608 SdHoareTripleChecker+Invalid, 9484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 796 IncrementalHoareTripleChecker+Valid, 6521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2167 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-12-18 00:14:18,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [711 Valid, 3608 Invalid, 9484 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [796 Valid, 6521 Invalid, 0 Unknown, 2167 Unchecked, 4.3s Time] [2021-12-18 00:14:18,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2021-12-18 00:14:18,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 293. [2021-12-18 00:14:18,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 188 states have (on average 1.1861702127659575) internal successors, (223), 193 states have internal predecessors, (223), 81 states have call successors, (81), 19 states have call predecessors, (81), 23 states have return successors, (97), 80 states have call predecessors, (97), 80 states have call successors, (97) [2021-12-18 00:14:18,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 401 transitions. [2021-12-18 00:14:18,611 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 401 transitions. Word has length 149 [2021-12-18 00:14:18,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:14:18,612 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 401 transitions. [2021-12-18 00:14:18,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 33 states have (on average 4.333333333333333) internal successors, (143), 34 states have internal predecessors, (143), 18 states have call successors, (41), 7 states have call predecessors, (41), 10 states have return successors, (40), 15 states have call predecessors, (40), 18 states have call successors, (40) [2021-12-18 00:14:18,612 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 401 transitions. [2021-12-18 00:14:18,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-18 00:14:18,614 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:14:18,615 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-18 00:14:18,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-18 00:14:18,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:14:18,815 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:14:18,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:14:18,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1301786885, now seen corresponding path program 1 times [2021-12-18 00:14:18,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:14:18,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579351005] [2021-12-18 00:14:18,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:14:18,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:14:18,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:18,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:14:18,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:18,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:14:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:18,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:14:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:18,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 00:14:18,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:19,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 00:14:19,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:19,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 00:14:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:19,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 00:14:19,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:19,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:14:19,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:19,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-18 00:14:19,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:19,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:14:19,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:19,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:14:19,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:19,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-18 00:14:19,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:19,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-18 00:14:19,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:19,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-18 00:14:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:19,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-18 00:14:19,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:19,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-18 00:14:19,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:19,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-18 00:14:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:19,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:14:19,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:19,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:14:19,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:19,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-18 00:14:19,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:19,109 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 3 proven. 31 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2021-12-18 00:14:19,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:14:19,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579351005] [2021-12-18 00:14:19,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579351005] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:14:19,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284145085] [2021-12-18 00:14:19,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:14:19,110 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:14:19,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:14:19,111 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) [2021-12-18 00:14:19,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-18 00:14:19,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:19,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 2849 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-18 00:14:19,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:14:19,736 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-12-18 00:14:19,737 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:14:19,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284145085] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:14:19,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:14:19,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 12 [2021-12-18 00:14:19,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938200812] [2021-12-18 00:14:19,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:14:19,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 00:14:19,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:14:19,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 00:14:19,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-12-18 00:14:19,740 INFO L87 Difference]: Start difference. First operand 293 states and 401 transitions. Second operand has 9 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-18 00:14:19,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:14:19,851 INFO L93 Difference]: Finished difference Result 462 states and 627 transitions. [2021-12-18 00:14:19,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 00:14:19,851 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 157 [2021-12-18 00:14:19,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:14:19,853 INFO L225 Difference]: With dead ends: 462 [2021-12-18 00:14:19,853 INFO L226 Difference]: Without dead ends: 298 [2021-12-18 00:14:19,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 192 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-12-18 00:14:19,854 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 12 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1529 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 00:14:19,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1529 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 00:14:19,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-12-18 00:14:19,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2021-12-18 00:14:19,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 192 states have (on average 1.1822916666666667) internal successors, (227), 198 states have internal predecessors, (227), 81 states have call successors, (81), 19 states have call predecessors, (81), 24 states have return successors, (100), 80 states have call predecessors, (100), 80 states have call successors, (100) [2021-12-18 00:14:19,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 408 transitions. [2021-12-18 00:14:19,868 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 408 transitions. Word has length 157 [2021-12-18 00:14:19,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:14:19,868 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 408 transitions. [2021-12-18 00:14:19,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-18 00:14:19,868 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 408 transitions. [2021-12-18 00:14:19,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-18 00:14:19,870 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:14:19,870 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:14:19,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-18 00:14:20,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:14:20,090 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:14:20,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:14:20,091 INFO L85 PathProgramCache]: Analyzing trace with hash -440408111, now seen corresponding path program 1 times [2021-12-18 00:14:20,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:14:20,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295757134] [2021-12-18 00:14:20,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:14:20,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:14:20,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:20,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:14:20,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:20,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:14:20,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:20,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:14:20,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:20,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 00:14:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:20,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 00:14:20,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:20,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 00:14:20,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:20,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 00:14:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:20,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:14:20,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:20,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 00:14:20,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:20,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 00:14:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:20,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-18 00:14:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:20,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 00:14:20,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:20,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:14:20,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:20,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-18 00:14:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:20,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-18 00:14:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:20,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-18 00:14:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:20,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 00:14:20,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:20,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-18 00:14:20,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:20,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:14:20,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:20,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:14:20,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:20,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-18 00:14:20,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:20,821 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-12-18 00:14:20,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:14:20,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295757134] [2021-12-18 00:14:20,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295757134] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:14:20,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 00:14:20,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-12-18 00:14:20,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178537050] [2021-12-18 00:14:20,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:14:20,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-18 00:14:20,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:14:20,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-18 00:14:20,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2021-12-18 00:14:20,824 INFO L87 Difference]: Start difference. First operand 298 states and 408 transitions. Second operand has 20 states, 17 states have (on average 4.294117647058823) internal successors, (73), 16 states have internal predecessors, (73), 8 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (21), 7 states have call predecessors, (21), 8 states have call successors, (21) [2021-12-18 00:14:22,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:14:22,795 INFO L93 Difference]: Finished difference Result 491 states and 697 transitions. [2021-12-18 00:14:22,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-18 00:14:22,796 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 4.294117647058823) internal successors, (73), 16 states have internal predecessors, (73), 8 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (21), 7 states have call predecessors, (21), 8 states have call successors, (21) Word has length 160 [2021-12-18 00:14:22,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:14:22,798 INFO L225 Difference]: With dead ends: 491 [2021-12-18 00:14:22,798 INFO L226 Difference]: Without dead ends: 369 [2021-12-18 00:14:22,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=142, Invalid=850, Unknown=0, NotChecked=0, Total=992 [2021-12-18 00:14:22,799 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 445 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 2891 mSolverCounterSat, 287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 3178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 2891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-18 00:14:22,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [474 Valid, 1081 Invalid, 3178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 2891 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-18 00:14:22,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-12-18 00:14:22,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 352. [2021-12-18 00:14:22,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 222 states have (on average 1.1891891891891893) internal successors, (264), 229 states have internal predecessors, (264), 104 states have call successors, (104), 19 states have call predecessors, (104), 25 states have return successors, (140), 103 states have call predecessors, (140), 103 states have call successors, (140) [2021-12-18 00:14:22,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 508 transitions. [2021-12-18 00:14:22,823 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 508 transitions. Word has length 160 [2021-12-18 00:14:22,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:14:22,823 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 508 transitions. [2021-12-18 00:14:22,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 4.294117647058823) internal successors, (73), 16 states have internal predecessors, (73), 8 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (21), 7 states have call predecessors, (21), 8 states have call successors, (21) [2021-12-18 00:14:22,823 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 508 transitions. [2021-12-18 00:14:22,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-18 00:14:22,825 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:14:22,825 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:14:22,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-18 00:14:22,826 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:14:22,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:14:22,826 INFO L85 PathProgramCache]: Analyzing trace with hash 453078227, now seen corresponding path program 1 times [2021-12-18 00:14:22,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:14:22,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419565454] [2021-12-18 00:14:22,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:14:22,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:14:22,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:22,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:14:22,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:22,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:14:22,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:22,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:14:22,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:22,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 00:14:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:22,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 00:14:22,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:22,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 00:14:22,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:22,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 00:14:22,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:22,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:14:22,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:22,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 00:14:22,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:22,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 00:14:22,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:22,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-18 00:14:22,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:22,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 00:14:22,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:22,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:14:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:22,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-18 00:14:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:22,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-18 00:14:22,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:22,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-18 00:14:22,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:23,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 00:14:23,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:23,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-18 00:14:23,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:23,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:14:23,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:23,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:14:23,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:23,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-18 00:14:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:23,046 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2021-12-18 00:14:23,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:14:23,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419565454] [2021-12-18 00:14:23,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419565454] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:14:23,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 00:14:23,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 00:14:23,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24576511] [2021-12-18 00:14:23,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:14:23,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 00:14:23,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:14:23,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 00:14:23,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 00:14:23,050 INFO L87 Difference]: Start difference. First operand 352 states and 508 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 00:14:23,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:14:23,381 INFO L93 Difference]: Finished difference Result 585 states and 872 transitions. [2021-12-18 00:14:23,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 00:14:23,382 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 160 [2021-12-18 00:14:23,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:14:23,384 INFO L225 Difference]: With dead ends: 585 [2021-12-18 00:14:23,384 INFO L226 Difference]: Without dead ends: 348 [2021-12-18 00:14:23,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-18 00:14:23,385 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 159 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-18 00:14:23,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 530 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-18 00:14:23,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2021-12-18 00:14:23,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 342. [2021-12-18 00:14:23,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 213 states have (on average 1.1784037558685445) internal successors, (251), 219 states have internal predecessors, (251), 104 states have call successors, (104), 19 states have call predecessors, (104), 24 states have return successors, (138), 103 states have call predecessors, (138), 103 states have call successors, (138) [2021-12-18 00:14:23,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 493 transitions. [2021-12-18 00:14:23,403 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 493 transitions. Word has length 160 [2021-12-18 00:14:23,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:14:23,404 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 493 transitions. [2021-12-18 00:14:23,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 00:14:23,404 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 493 transitions. [2021-12-18 00:14:23,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-12-18 00:14:23,406 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:14:23,406 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:14:23,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-18 00:14:23,406 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:14:23,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:14:23,406 INFO L85 PathProgramCache]: Analyzing trace with hash -885167296, now seen corresponding path program 1 times [2021-12-18 00:14:23,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:14:23,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524349585] [2021-12-18 00:14:23,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:14:23,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:14:23,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:23,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:14:23,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:23,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:14:23,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:23,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:14:23,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:23,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-18 00:14:23,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:23,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 00:14:23,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:23,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 00:14:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:23,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-18 00:14:23,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:23,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:14:23,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:23,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-18 00:14:23,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:23,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-18 00:14:23,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:23,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 00:14:23,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:23,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 00:14:23,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:23,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-18 00:14:23,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:23,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-18 00:14:23,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:23,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-18 00:14:23,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:23,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-18 00:14:23,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:23,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-18 00:14:23,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:23,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:14:23,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:23,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:14:23,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:23,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-18 00:14:23,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:23,686 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 20 proven. 14 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2021-12-18 00:14:23,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:14:23,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524349585] [2021-12-18 00:14:23,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524349585] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:14:23,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599726479] [2021-12-18 00:14:23,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:14:23,687 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:14:23,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:14:23,688 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) [2021-12-18 00:14:23,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-18 00:14:24,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:24,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 2854 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-18 00:14:24,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:14:24,356 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-12-18 00:14:24,356 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:14:24,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599726479] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:14:24,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:14:24,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2021-12-18 00:14:24,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841422679] [2021-12-18 00:14:24,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:14:24,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 00:14:24,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:14:24,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 00:14:24,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2021-12-18 00:14:24,358 INFO L87 Difference]: Start difference. First operand 342 states and 493 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-18 00:14:24,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:14:24,497 INFO L93 Difference]: Finished difference Result 565 states and 820 transitions. [2021-12-18 00:14:24,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 00:14:24,498 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 159 [2021-12-18 00:14:24,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:14:24,499 INFO L225 Difference]: With dead ends: 565 [2021-12-18 00:14:24,499 INFO L226 Difference]: Without dead ends: 342 [2021-12-18 00:14:24,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-12-18 00:14:24,501 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 17 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 00:14:24,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 706 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 39 Unchecked, 0.1s Time] [2021-12-18 00:14:24,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-12-18 00:14:24,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2021-12-18 00:14:24,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 213 states have (on average 1.1737089201877935) internal successors, (250), 219 states have internal predecessors, (250), 104 states have call successors, (104), 19 states have call predecessors, (104), 24 states have return successors, (138), 103 states have call predecessors, (138), 103 states have call successors, (138) [2021-12-18 00:14:24,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 492 transitions. [2021-12-18 00:14:24,519 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 492 transitions. Word has length 159 [2021-12-18 00:14:24,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:14:24,519 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 492 transitions. [2021-12-18 00:14:24,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-18 00:14:24,519 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 492 transitions. [2021-12-18 00:14:24,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-12-18 00:14:24,521 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:14:24,521 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:14:24,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-18 00:14:24,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:14:24,735 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:14:24,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:14:24,735 INFO L85 PathProgramCache]: Analyzing trace with hash -467278594, now seen corresponding path program 1 times [2021-12-18 00:14:24,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:14:24,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847263832] [2021-12-18 00:14:24,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:14:24,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:14:24,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:24,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:14:24,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:24,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:14:24,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:24,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:14:24,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:24,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-18 00:14:24,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:24,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 00:14:24,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:24,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 00:14:24,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:24,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-18 00:14:24,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:24,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:14:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:24,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-18 00:14:24,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:24,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-18 00:14:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:24,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 00:14:24,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:24,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 00:14:24,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:24,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-18 00:14:24,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:24,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-18 00:14:24,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:25,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-18 00:14:25,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:25,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-18 00:14:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:25,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-18 00:14:25,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:25,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:14:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:25,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:14:25,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:25,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-18 00:14:25,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:25,048 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 20 proven. 14 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2021-12-18 00:14:25,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:14:25,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847263832] [2021-12-18 00:14:25,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847263832] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:14:25,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748679088] [2021-12-18 00:14:25,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:14:25,048 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:14:25,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:14:25,059 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) [2021-12-18 00:14:25,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-18 00:14:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:25,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 2859 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-18 00:14:25,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:14:25,703 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-12-18 00:14:25,703 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:14:25,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748679088] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:14:25,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:14:25,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 12 [2021-12-18 00:14:25,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988055686] [2021-12-18 00:14:25,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:14:25,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 00:14:25,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:14:25,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 00:14:25,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-12-18 00:14:25,705 INFO L87 Difference]: Start difference. First operand 342 states and 492 transitions. Second operand has 9 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-18 00:14:25,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:14:25,826 INFO L93 Difference]: Finished difference Result 506 states and 722 transitions. [2021-12-18 00:14:25,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 00:14:25,826 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 159 [2021-12-18 00:14:25,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:14:25,828 INFO L225 Difference]: With dead ends: 506 [2021-12-18 00:14:25,828 INFO L226 Difference]: Without dead ends: 342 [2021-12-18 00:14:25,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 195 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-12-18 00:14:25,831 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 11 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1514 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 00:14:25,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 1514 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 00:14:25,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-12-18 00:14:25,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2021-12-18 00:14:25,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 213 states have (on average 1.1737089201877935) internal successors, (250), 219 states have internal predecessors, (250), 104 states have call successors, (104), 19 states have call predecessors, (104), 24 states have return successors, (136), 103 states have call predecessors, (136), 103 states have call successors, (136) [2021-12-18 00:14:25,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 490 transitions. [2021-12-18 00:14:25,865 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 490 transitions. Word has length 159 [2021-12-18 00:14:25,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:14:25,865 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 490 transitions. [2021-12-18 00:14:25,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-18 00:14:25,866 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 490 transitions. [2021-12-18 00:14:25,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-12-18 00:14:25,868 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:14:25,868 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:14:25,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-18 00:14:26,087 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,SelfDestructingSolverStorable11 [2021-12-18 00:14:26,087 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:14:26,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:14:26,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1779315227, now seen corresponding path program 2 times [2021-12-18 00:14:26,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:14:26,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176499969] [2021-12-18 00:14:26,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:14:26,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:14:26,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:26,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:14:26,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:26,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:14:26,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:26,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:14:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:26,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-18 00:14:26,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:26,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 00:14:26,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:26,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 00:14:26,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:26,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-18 00:14:26,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:26,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:14:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:26,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-18 00:14:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:26,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-18 00:14:26,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:26,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 00:14:26,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:26,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 00:14:26,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:26,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-18 00:14:26,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:26,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-18 00:14:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:26,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-18 00:14:26,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:26,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-18 00:14:26,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:26,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 00:14:26,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:26,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:14:26,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:26,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:14:26,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:26,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-18 00:14:26,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:26,590 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-12-18 00:14:26,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:14:26,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176499969] [2021-12-18 00:14:26,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176499969] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:14:26,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443499090] [2021-12-18 00:14:26,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 00:14:26,591 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:14:26,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:14:26,608 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) [2021-12-18 00:14:26,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-18 00:14:27,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-18 00:14:27,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 00:14:27,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 2869 conjuncts, 85 conjunts are in the unsatisfiable core [2021-12-18 00:14:27,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:14:30,091 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_~a#1.base_BEFORE_CALL_11| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_~a#1.base_BEFORE_CALL_11|) 8) 0))) (exists ((|v_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_~a#1.base_BEFORE_CALL_11| Int)) (= 0 (mod (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_~a#1.base_BEFORE_CALL_11|) 0) 18446744073709551616))) (exists ((|v_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_~a#1.base_BEFORE_CALL_11| Int)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_~a#1.base_BEFORE_CALL_11|) 8) 0)))) is different from true [2021-12-18 00:14:38,172 WARN L227 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-18 00:14:47,731 WARN L227 SmtUtils]: Spent 5.32s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-18 00:15:08,347 WARN L227 SmtUtils]: Spent 6.03s on a formula simplification that was a NOOP. DAG size: 40 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-18 00:15:08,504 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 43 proven. 3 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-12-18 00:15:08,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:15:25,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443499090] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:15:25,547 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 00:15:25,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 22] total 32 [2021-12-18 00:15:25,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736792077] [2021-12-18 00:15:25,547 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 00:15:25,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-18 00:15:25,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:15:25,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-18 00:15:25,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1819, Unknown=8, NotChecked=86, Total=2070 [2021-12-18 00:15:25,548 INFO L87 Difference]: Start difference. First operand 342 states and 490 transitions. Second operand has 32 states, 29 states have (on average 3.7586206896551726) internal successors, (109), 29 states have internal predecessors, (109), 11 states have call successors, (39), 6 states have call predecessors, (39), 6 states have return successors, (38), 7 states have call predecessors, (38), 11 states have call successors, (38) [2021-12-18 00:15:43,470 WARN L227 SmtUtils]: Spent 6.18s on a formula simplification. DAG size of input: 85 DAG size of output: 84 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-18 00:15:51,753 WARN L227 SmtUtils]: Spent 8.12s on a formula simplification. DAG size of input: 81 DAG size of output: 80 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-18 00:15:59,909 WARN L227 SmtUtils]: Spent 8.13s on a formula simplification. DAG size of input: 81 DAG size of output: 80 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-18 00:16:05,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:16:05,926 INFO L93 Difference]: Finished difference Result 595 states and 849 transitions. [2021-12-18 00:16:05,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-18 00:16:05,926 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 3.7586206896551726) internal successors, (109), 29 states have internal predecessors, (109), 11 states have call successors, (39), 6 states have call predecessors, (39), 6 states have return successors, (38), 7 states have call predecessors, (38), 11 states have call successors, (38) Word has length 161 [2021-12-18 00:16:05,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:16:05,928 INFO L225 Difference]: With dead ends: 595 [2021-12-18 00:16:05,928 INFO L226 Difference]: Without dead ends: 367 [2021-12-18 00:16:05,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 190 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1065 ImplicationChecksByTransitivity, 95.9s TimeCoverageRelationStatistics Valid=473, Invalid=4779, Unknown=8, NotChecked=142, Total=5402 [2021-12-18 00:16:05,932 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 354 mSDsluCounter, 1296 mSDsCounter, 0 mSdLazyCounter, 2508 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 1443 SdHoareTripleChecker+Invalid, 4337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 2508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1567 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-18 00:16:05,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 1443 Invalid, 4337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 2508 Invalid, 0 Unknown, 1567 Unchecked, 1.4s Time] [2021-12-18 00:16:05,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2021-12-18 00:16:05,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 351. [2021-12-18 00:16:05,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 221 states have (on average 1.1764705882352942) internal successors, (260), 227 states have internal predecessors, (260), 105 states have call successors, (105), 20 states have call predecessors, (105), 24 states have return successors, (137), 103 states have call predecessors, (137), 104 states have call successors, (137) [2021-12-18 00:16:05,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 502 transitions. [2021-12-18 00:16:05,954 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 502 transitions. Word has length 161 [2021-12-18 00:16:05,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:16:05,954 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 502 transitions. [2021-12-18 00:16:05,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 3.7586206896551726) internal successors, (109), 29 states have internal predecessors, (109), 11 states have call successors, (39), 6 states have call predecessors, (39), 6 states have return successors, (38), 7 states have call predecessors, (38), 11 states have call successors, (38) [2021-12-18 00:16:05,955 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 502 transitions. [2021-12-18 00:16:05,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-18 00:16:05,956 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:16:05,956 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2021-12-18 00:16:05,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-18 00:16:06,175 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,SelfDestructingSolverStorable12 [2021-12-18 00:16:06,175 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:16:06,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:16:06,175 INFO L85 PathProgramCache]: Analyzing trace with hash 846559134, now seen corresponding path program 1 times [2021-12-18 00:16:06,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:16:06,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778198031] [2021-12-18 00:16:06,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:16:06,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:16:06,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:06,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:16:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:06,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:16:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:06,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:16:06,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:06,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 00:16:06,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:06,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 00:16:06,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:06,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 00:16:06,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:06,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 00:16:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:06,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:16:06,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:06,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 00:16:06,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:06,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 00:16:06,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:06,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-18 00:16:06,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:06,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:16:06,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:06,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-18 00:16:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:06,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-18 00:16:06,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:06,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-18 00:16:06,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:06,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-18 00:16:06,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:06,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-18 00:16:06,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:06,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-18 00:16:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:06,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:16:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:06,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:16:06,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:06,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-18 00:16:06,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:06,351 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2021-12-18 00:16:06,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:16:06,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778198031] [2021-12-18 00:16:06,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778198031] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:16:06,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468739955] [2021-12-18 00:16:06,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:16:06,351 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:16:06,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:16:06,352 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) [2021-12-18 00:16:06,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-18 00:16:06,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:06,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 2884 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 00:16:06,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:16:07,039 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-12-18 00:16:07,039 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:16:07,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468739955] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:16:07,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:16:07,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2021-12-18 00:16:07,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302950504] [2021-12-18 00:16:07,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:16:07,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 00:16:07,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:16:07,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 00:16:07,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 00:16:07,040 INFO L87 Difference]: Start difference. First operand 351 states and 502 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 00:16:07,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:16:07,070 INFO L93 Difference]: Finished difference Result 617 states and 900 transitions. [2021-12-18 00:16:07,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 00:16:07,071 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 162 [2021-12-18 00:16:07,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:16:07,073 INFO L225 Difference]: With dead ends: 617 [2021-12-18 00:16:07,073 INFO L226 Difference]: Without dead ends: 365 [2021-12-18 00:16:07,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 00:16:07,074 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 26 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 00:16:07,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 637 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 00:16:07,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2021-12-18 00:16:07,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 353. [2021-12-18 00:16:07,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 223 states have (on average 1.1748878923766817) internal successors, (262), 229 states have internal predecessors, (262), 105 states have call successors, (105), 20 states have call predecessors, (105), 24 states have return successors, (137), 103 states have call predecessors, (137), 104 states have call successors, (137) [2021-12-18 00:16:07,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 504 transitions. [2021-12-18 00:16:07,094 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 504 transitions. Word has length 162 [2021-12-18 00:16:07,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:16:07,094 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 504 transitions. [2021-12-18 00:16:07,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 00:16:07,094 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 504 transitions. [2021-12-18 00:16:07,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-18 00:16:07,096 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:16:07,096 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:16:07,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-18 00:16:07,316 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,SelfDestructingSolverStorable13 [2021-12-18 00:16:07,316 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:16:07,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:16:07,317 INFO L85 PathProgramCache]: Analyzing trace with hash -542734880, now seen corresponding path program 1 times [2021-12-18 00:16:07,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:16:07,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917629379] [2021-12-18 00:16:07,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:16:07,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:16:07,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:07,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:16:07,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:07,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:16:07,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:07,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:16:07,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:07,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 00:16:07,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:07,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 00:16:07,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:07,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 00:16:07,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:07,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 00:16:07,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:07,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:16:07,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:07,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 00:16:07,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:07,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 00:16:07,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:08,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-18 00:16:08,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:08,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:16:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:08,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-18 00:16:08,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:08,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-18 00:16:08,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:08,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-18 00:16:08,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:08,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-18 00:16:08,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:08,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-18 00:16:08,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:08,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-18 00:16:08,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:08,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:16:08,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:08,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:16:08,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:08,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-18 00:16:08,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:08,473 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2021-12-18 00:16:08,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:16:08,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917629379] [2021-12-18 00:16:08,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917629379] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:16:08,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548427600] [2021-12-18 00:16:08,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:16:08,474 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:16:08,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:16:08,484 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) [2021-12-18 00:16:08,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-18 00:16:08,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:08,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 2887 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-18 00:16:08,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:16:09,235 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2021-12-18 00:16:09,235 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:16:09,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548427600] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:16:09,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:16:09,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [31] total 33 [2021-12-18 00:16:09,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651492358] [2021-12-18 00:16:09,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:16:09,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 00:16:09,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:16:09,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 00:16:09,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=972, Unknown=0, NotChecked=0, Total=1056 [2021-12-18 00:16:09,236 INFO L87 Difference]: Start difference. First operand 353 states and 504 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2021-12-18 00:16:09,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:16:09,353 INFO L93 Difference]: Finished difference Result 584 states and 840 transitions. [2021-12-18 00:16:09,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 00:16:09,354 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 162 [2021-12-18 00:16:09,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:16:09,358 INFO L225 Difference]: With dead ends: 584 [2021-12-18 00:16:09,358 INFO L226 Difference]: Without dead ends: 353 [2021-12-18 00:16:09,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=88, Invalid=1034, Unknown=0, NotChecked=0, Total=1122 [2021-12-18 00:16:09,361 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 3 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 00:16:09,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 536 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 34 Unchecked, 0.1s Time] [2021-12-18 00:16:09,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2021-12-18 00:16:09,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2021-12-18 00:16:09,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 223 states have (on average 1.1659192825112108) internal successors, (260), 229 states have internal predecessors, (260), 105 states have call successors, (105), 20 states have call predecessors, (105), 24 states have return successors, (135), 103 states have call predecessors, (135), 104 states have call successors, (135) [2021-12-18 00:16:09,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 500 transitions. [2021-12-18 00:16:09,379 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 500 transitions. Word has length 162 [2021-12-18 00:16:09,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:16:09,380 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 500 transitions. [2021-12-18 00:16:09,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2021-12-18 00:16:09,380 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 500 transitions. [2021-12-18 00:16:09,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-18 00:16:09,382 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:16:09,382 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:16:09,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-18 00:16:09,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-18 00:16:09,609 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:16:09,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:16:09,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1891899529, now seen corresponding path program 1 times [2021-12-18 00:16:09,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:16:09,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345490228] [2021-12-18 00:16:09,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:16:09,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:16:09,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:09,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:16:09,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:09,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:16:09,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:09,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:16:09,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:09,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 00:16:09,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:09,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 00:16:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:09,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 00:16:09,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:09,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 00:16:09,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:09,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:16:09,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:09,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 00:16:09,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:09,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 00:16:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:09,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-18 00:16:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:09,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:16:09,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:09,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-18 00:16:09,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:09,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-18 00:16:09,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:09,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-18 00:16:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:09,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-18 00:16:09,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:09,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-18 00:16:09,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:09,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-18 00:16:09,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:09,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:16:09,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:09,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:16:09,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:09,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-18 00:16:09,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:09,933 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2021-12-18 00:16:09,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:16:09,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345490228] [2021-12-18 00:16:09,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345490228] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:16:09,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 00:16:09,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-18 00:16:09,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828638919] [2021-12-18 00:16:09,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:16:09,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-18 00:16:09,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:16:09,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-18 00:16:09,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2021-12-18 00:16:09,934 INFO L87 Difference]: Start difference. First operand 353 states and 500 transitions. Second operand has 15 states, 14 states have (on average 5.142857142857143) internal successors, (72), 11 states have internal predecessors, (72), 2 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2021-12-18 00:16:10,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:16:10,783 INFO L93 Difference]: Finished difference Result 359 states and 505 transitions. [2021-12-18 00:16:10,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-18 00:16:10,784 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.142857142857143) internal successors, (72), 11 states have internal predecessors, (72), 2 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 164 [2021-12-18 00:16:10,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:16:10,785 INFO L225 Difference]: With dead ends: 359 [2021-12-18 00:16:10,785 INFO L226 Difference]: Without dead ends: 357 [2021-12-18 00:16:10,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2021-12-18 00:16:10,786 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 173 mSDsluCounter, 1274 mSDsCounter, 0 mSdLazyCounter, 1034 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 1456 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-18 00:16:10,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 1456 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1034 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-18 00:16:10,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2021-12-18 00:16:10,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2021-12-18 00:16:10,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 226 states have (on average 1.163716814159292) internal successors, (263), 232 states have internal predecessors, (263), 105 states have call successors, (105), 21 states have call predecessors, (105), 25 states have return successors, (135), 103 states have call predecessors, (135), 104 states have call successors, (135) [2021-12-18 00:16:10,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 503 transitions. [2021-12-18 00:16:10,805 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 503 transitions. Word has length 164 [2021-12-18 00:16:10,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:16:10,806 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 503 transitions. [2021-12-18 00:16:10,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.142857142857143) internal successors, (72), 11 states have internal predecessors, (72), 2 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2021-12-18 00:16:10,806 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 503 transitions. [2021-12-18 00:16:10,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-18 00:16:10,807 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:16:10,808 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:16:10,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-18 00:16:10,808 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:16:10,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:16:10,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1993374974, now seen corresponding path program 1 times [2021-12-18 00:16:10,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:16:10,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965914995] [2021-12-18 00:16:10,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:16:10,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:16:10,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:10,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:16:10,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:10,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:16:10,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:10,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:16:10,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:10,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 00:16:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:10,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 00:16:10,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:10,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 00:16:10,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:10,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 00:16:10,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:10,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:16:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:10,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 00:16:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:10,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:16:10,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:10,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:16:10,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:10,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-18 00:16:10,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:10,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-18 00:16:10,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:10,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-18 00:16:10,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:10,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-18 00:16:10,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:10,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 00:16:10,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:10,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-18 00:16:10,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:10,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:16:10,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:10,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:16:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:11,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-18 00:16:11,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:11,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-18 00:16:11,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:11,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-18 00:16:11,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:11,040 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2021-12-18 00:16:11,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:16:11,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965914995] [2021-12-18 00:16:11,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965914995] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:16:11,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 00:16:11,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-18 00:16:11,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310714987] [2021-12-18 00:16:11,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:16:11,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-18 00:16:11,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:16:11,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-18 00:16:11,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-18 00:16:11,044 INFO L87 Difference]: Start difference. First operand 357 states and 503 transitions. Second operand has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2021-12-18 00:16:11,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:16:11,515 INFO L93 Difference]: Finished difference Result 371 states and 524 transitions. [2021-12-18 00:16:11,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-18 00:16:11,516 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) Word has length 167 [2021-12-18 00:16:11,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:16:11,517 INFO L225 Difference]: With dead ends: 371 [2021-12-18 00:16:11,518 INFO L226 Difference]: Without dead ends: 369 [2021-12-18 00:16:11,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-12-18 00:16:11,518 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 159 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-18 00:16:11,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 1021 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-18 00:16:11,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-12-18 00:16:11,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 367. [2021-12-18 00:16:11,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 232 states have (on average 1.1594827586206897) internal successors, (269), 239 states have internal predecessors, (269), 107 states have call successors, (107), 22 states have call predecessors, (107), 27 states have return successors, (144), 105 states have call predecessors, (144), 106 states have call successors, (144) [2021-12-18 00:16:11,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 520 transitions. [2021-12-18 00:16:11,536 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 520 transitions. Word has length 167 [2021-12-18 00:16:11,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:16:11,537 INFO L470 AbstractCegarLoop]: Abstraction has 367 states and 520 transitions. [2021-12-18 00:16:11,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2021-12-18 00:16:11,537 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 520 transitions. [2021-12-18 00:16:11,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-12-18 00:16:11,538 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:16:11,538 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:16:11,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-18 00:16:11,539 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:16:11,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:16:11,539 INFO L85 PathProgramCache]: Analyzing trace with hash 163104454, now seen corresponding path program 2 times [2021-12-18 00:16:11,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:16:11,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983931709] [2021-12-18 00:16:11,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:16:11,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:16:11,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:11,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:16:11,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:11,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:16:11,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:11,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:16:11,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:11,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 00:16:11,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:11,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 00:16:11,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:11,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 00:16:11,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:11,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 00:16:11,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:11,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:16:11,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:11,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 00:16:11,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:11,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:16:11,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:11,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:16:11,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:11,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-18 00:16:11,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:11,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-18 00:16:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:11,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-18 00:16:11,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:11,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-18 00:16:11,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:11,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 00:16:11,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:11,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-18 00:16:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:11,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:16:11,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:11,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:16:11,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:11,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-18 00:16:11,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:11,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-18 00:16:11,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:11,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-18 00:16:11,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:11,846 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 14 proven. 21 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2021-12-18 00:16:11,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:16:11,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983931709] [2021-12-18 00:16:11,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983931709] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:16:11,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957311881] [2021-12-18 00:16:11,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 00:16:11,847 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:16:11,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:16:11,848 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) [2021-12-18 00:16:11,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-18 00:16:12,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-18 00:16:12,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 00:16:12,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 2881 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-18 00:16:12,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:16:13,111 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-12-18 00:16:13,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:16:13,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957311881] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:16:13,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:16:13,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 12 [2021-12-18 00:16:13,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822848759] [2021-12-18 00:16:13,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:16:13,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 00:16:13,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:16:13,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 00:16:13,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-12-18 00:16:13,113 INFO L87 Difference]: Start difference. First operand 367 states and 520 transitions. Second operand has 9 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-18 00:16:13,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:16:13,236 INFO L93 Difference]: Finished difference Result 632 states and 922 transitions. [2021-12-18 00:16:13,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 00:16:13,236 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 171 [2021-12-18 00:16:13,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:16:13,239 INFO L225 Difference]: With dead ends: 632 [2021-12-18 00:16:13,239 INFO L226 Difference]: Without dead ends: 377 [2021-12-18 00:16:13,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 210 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-12-18 00:16:13,241 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 12 mSDsluCounter, 1317 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1513 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 00:16:13,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1513 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 00:16:13,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-12-18 00:16:13,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2021-12-18 00:16:13,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 240 states have (on average 1.1541666666666666) internal successors, (277), 249 states have internal predecessors, (277), 107 states have call successors, (107), 22 states have call predecessors, (107), 29 states have return successors, (162), 105 states have call predecessors, (162), 106 states have call successors, (162) [2021-12-18 00:16:13,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 546 transitions. [2021-12-18 00:16:13,260 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 546 transitions. Word has length 171 [2021-12-18 00:16:13,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:16:13,260 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 546 transitions. [2021-12-18 00:16:13,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-18 00:16:13,261 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 546 transitions. [2021-12-18 00:16:13,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-18 00:16:13,262 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:16:13,262 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:16:13,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-18 00:16:13,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-18 00:16:13,481 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:16:13,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:16:13,481 INFO L85 PathProgramCache]: Analyzing trace with hash -856906994, now seen corresponding path program 1 times [2021-12-18 00:16:13,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:16:13,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797064027] [2021-12-18 00:16:13,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:16:13,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:16:13,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:13,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:16:13,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:13,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:16:13,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:13,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:16:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:13,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 00:16:13,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:13,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 00:16:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:13,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 00:16:13,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:13,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 00:16:13,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:13,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:16:13,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:13,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 00:16:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:13,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 00:16:13,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:13,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-18 00:16:13,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:13,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 00:16:13,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:13,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:16:13,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:13,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-18 00:16:13,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:13,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-18 00:16:13,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:13,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-18 00:16:13,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:13,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 00:16:13,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:13,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-18 00:16:13,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:13,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:16:13,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:13,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:16:13,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:13,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-18 00:16:13,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:13,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-18 00:16:13,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:13,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-18 00:16:13,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:13,919 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 2 proven. 23 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-12-18 00:16:13,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:16:13,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797064027] [2021-12-18 00:16:13,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797064027] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:16:13,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150144591] [2021-12-18 00:16:13,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:16:13,919 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:16:13,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:16:13,920 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) [2021-12-18 00:16:13,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-18 00:16:14,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:14,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 2916 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-18 00:16:14,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:16:14,637 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-12-18 00:16:14,637 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:16:14,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150144591] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:16:14,637 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:16:14,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 17 [2021-12-18 00:16:14,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974443546] [2021-12-18 00:16:14,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:16:14,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 00:16:14,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:16:14,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 00:16:14,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2021-12-18 00:16:14,639 INFO L87 Difference]: Start difference. First operand 377 states and 546 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-18 00:16:14,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:16:14,759 INFO L93 Difference]: Finished difference Result 659 states and 1024 transitions. [2021-12-18 00:16:14,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 00:16:14,759 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 178 [2021-12-18 00:16:14,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:16:14,761 INFO L225 Difference]: With dead ends: 659 [2021-12-18 00:16:14,761 INFO L226 Difference]: Without dead ends: 394 [2021-12-18 00:16:14,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-12-18 00:16:14,765 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 38 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 00:16:14,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 704 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 42 Unchecked, 0.1s Time] [2021-12-18 00:16:14,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-12-18 00:16:14,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 380. [2021-12-18 00:16:14,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 243 states have (on average 1.1481481481481481) internal successors, (279), 252 states have internal predecessors, (279), 107 states have call successors, (107), 22 states have call predecessors, (107), 29 states have return successors, (162), 105 states have call predecessors, (162), 106 states have call successors, (162) [2021-12-18 00:16:14,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 548 transitions. [2021-12-18 00:16:14,803 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 548 transitions. Word has length 178 [2021-12-18 00:16:14,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:16:14,803 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 548 transitions. [2021-12-18 00:16:14,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-18 00:16:14,803 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 548 transitions. [2021-12-18 00:16:14,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-12-18 00:16:14,805 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:16:14,805 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:16:14,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-18 00:16:15,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:16:15,019 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:16:15,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:16:15,020 INFO L85 PathProgramCache]: Analyzing trace with hash 727595970, now seen corresponding path program 1 times [2021-12-18 00:16:15,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:16:15,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201702482] [2021-12-18 00:16:15,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:16:15,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:16:15,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:15,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:16:15,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:15,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:16:15,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:15,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:16:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:15,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 00:16:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:15,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 00:16:15,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:15,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 00:16:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:15,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 00:16:15,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:15,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:16:15,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:15,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 00:16:15,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:15,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 00:16:15,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:15,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-18 00:16:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:15,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 00:16:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:15,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 00:16:15,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:15,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-18 00:16:15,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:15,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-18 00:16:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:15,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 00:16:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:15,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-18 00:16:15,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:15,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:16:15,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:15,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:16:15,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:15,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-18 00:16:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:15,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-18 00:16:15,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:15,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-18 00:16:15,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:15,310 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 24 proven. 11 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2021-12-18 00:16:15,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:16:15,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201702482] [2021-12-18 00:16:15,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201702482] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:16:15,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411325726] [2021-12-18 00:16:15,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:16:15,311 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:16:15,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:16:15,328 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) [2021-12-18 00:16:15,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-18 00:16:15,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:15,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 2871 conjuncts, 80 conjunts are in the unsatisfiable core [2021-12-18 00:16:15,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:16:16,174 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 00:16:16,174 INFO L388 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 [2021-12-18 00:16:16,180 INFO L388 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 5 [2021-12-18 00:16:16,254 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 00:16:16,255 INFO L388 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 20 treesize of output 26 [2021-12-18 00:16:17,123 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 00:16:17,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 25 [2021-12-18 00:16:17,275 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 77 proven. 64 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-12-18 00:16:17,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:16:22,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411325726] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:16:22,289 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 00:16:22,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 22] total 31 [2021-12-18 00:16:22,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953418952] [2021-12-18 00:16:22,289 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 00:16:22,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-12-18 00:16:22,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:16:22,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-12-18 00:16:22,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1589, Unknown=3, NotChecked=0, Total=1722 [2021-12-18 00:16:22,290 INFO L87 Difference]: Start difference. First operand 380 states and 548 transitions. Second operand has 31 states, 28 states have (on average 5.642857142857143) internal successors, (158), 28 states have internal predecessors, (158), 13 states have call successors, (44), 6 states have call predecessors, (44), 9 states have return successors, (43), 10 states have call predecessors, (43), 13 states have call successors, (43) [2021-12-18 00:16:27,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:16:27,438 INFO L93 Difference]: Finished difference Result 916 states and 1354 transitions. [2021-12-18 00:16:27,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-12-18 00:16:27,438 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 5.642857142857143) internal successors, (158), 28 states have internal predecessors, (158), 13 states have call successors, (44), 6 states have call predecessors, (44), 9 states have return successors, (43), 10 states have call predecessors, (43), 13 states have call successors, (43) Word has length 171 [2021-12-18 00:16:27,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:16:27,441 INFO L225 Difference]: With dead ends: 916 [2021-12-18 00:16:27,441 INFO L226 Difference]: Without dead ends: 671 [2021-12-18 00:16:27,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 298 SyntacticMatches, 17 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2189 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=1061, Invalid=8836, Unknown=3, NotChecked=0, Total=9900 [2021-12-18 00:16:27,444 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 675 mSDsluCounter, 3363 mSDsCounter, 0 mSdLazyCounter, 6290 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 3634 SdHoareTripleChecker+Invalid, 7764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 6290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1113 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-18 00:16:27,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [792 Valid, 3634 Invalid, 7764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 6290 Invalid, 0 Unknown, 1113 Unchecked, 3.0s Time] [2021-12-18 00:16:27,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2021-12-18 00:16:27,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 440. [2021-12-18 00:16:27,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 289 states have (on average 1.1453287197231834) internal successors, (331), 299 states have internal predecessors, (331), 116 states have call successors, (116), 26 states have call predecessors, (116), 34 states have return successors, (165), 114 states have call predecessors, (165), 115 states have call successors, (165) [2021-12-18 00:16:27,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 612 transitions. [2021-12-18 00:16:27,472 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 612 transitions. Word has length 171 [2021-12-18 00:16:27,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:16:27,473 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 612 transitions. [2021-12-18 00:16:27,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 5.642857142857143) internal successors, (158), 28 states have internal predecessors, (158), 13 states have call successors, (44), 6 states have call predecessors, (44), 9 states have return successors, (43), 10 states have call predecessors, (43), 13 states have call successors, (43) [2021-12-18 00:16:27,473 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 612 transitions. [2021-12-18 00:16:27,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-12-18 00:16:27,474 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:16:27,475 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:16:27,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-18 00:16:27,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:16:27,684 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:16:27,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:16:27,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1182359115, now seen corresponding path program 1 times [2021-12-18 00:16:27,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:16:27,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410708233] [2021-12-18 00:16:27,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:16:27,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:16:27,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:27,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:16:27,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:27,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:16:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:27,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:16:27,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:27,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 00:16:27,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:27,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 00:16:27,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:27,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 00:16:27,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:27,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 00:16:27,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:27,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:16:27,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:27,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 00:16:27,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:27,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-18 00:16:27,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:27,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 00:16:27,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:27,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 00:16:27,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:27,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-18 00:16:27,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:27,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-18 00:16:27,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:27,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-18 00:16:27,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:27,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-18 00:16:27,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:27,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-18 00:16:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:27,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:16:27,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:27,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:16:27,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:27,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-18 00:16:27,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:27,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-18 00:16:27,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:27,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-18 00:16:27,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:27,842 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2021-12-18 00:16:27,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:16:27,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410708233] [2021-12-18 00:16:27,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410708233] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:16:27,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981636700] [2021-12-18 00:16:27,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:16:27,842 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:16:27,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:16:27,843 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) [2021-12-18 00:16:27,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-18 00:16:28,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:28,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 2876 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 00:16:28,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:16:28,488 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-12-18 00:16:28,488 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:16:28,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981636700] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:16:28,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:16:28,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2021-12-18 00:16:28,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382804856] [2021-12-18 00:16:28,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:16:28,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 00:16:28,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:16:28,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 00:16:28,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 00:16:28,489 INFO L87 Difference]: Start difference. First operand 440 states and 612 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-18 00:16:28,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:16:28,517 INFO L93 Difference]: Finished difference Result 721 states and 1031 transitions. [2021-12-18 00:16:28,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 00:16:28,518 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 173 [2021-12-18 00:16:28,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:16:28,520 INFO L225 Difference]: With dead ends: 721 [2021-12-18 00:16:28,520 INFO L226 Difference]: Without dead ends: 387 [2021-12-18 00:16:28,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 00:16:28,522 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 9 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 597 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 [2021-12-18 00:16:28,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 597 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 00:16:28,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2021-12-18 00:16:28,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 384. [2021-12-18 00:16:28,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 247 states have (on average 1.1295546558704452) internal successors, (279), 255 states have internal predecessors, (279), 107 states have call successors, (107), 23 states have call predecessors, (107), 29 states have return successors, (143), 105 states have call predecessors, (143), 106 states have call successors, (143) [2021-12-18 00:16:28,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 529 transitions. [2021-12-18 00:16:28,541 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 529 transitions. Word has length 173 [2021-12-18 00:16:28,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:16:28,542 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 529 transitions. [2021-12-18 00:16:28,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-18 00:16:28,543 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 529 transitions. [2021-12-18 00:16:28,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-12-18 00:16:28,544 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:16:28,544 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:16:28,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-18 00:16:28,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:16:28,765 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:16:28,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:16:28,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1737762858, now seen corresponding path program 1 times [2021-12-18 00:16:28,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:16:28,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326514496] [2021-12-18 00:16:28,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:16:28,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:16:28,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:29,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:16:29,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:29,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:16:29,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:29,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:16:29,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:29,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 00:16:29,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:29,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 00:16:29,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:29,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 00:16:29,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:29,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 00:16:29,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:29,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:16:29,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:29,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 00:16:29,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:29,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 00:16:29,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:29,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-18 00:16:29,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:29,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:16:29,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:29,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-18 00:16:29,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:29,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-18 00:16:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:29,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-18 00:16:29,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:29,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-18 00:16:29,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:29,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 00:16:29,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:29,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-18 00:16:29,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:29,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:16:29,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:29,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:16:29,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:29,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-18 00:16:29,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:29,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-18 00:16:29,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:29,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-18 00:16:29,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:29,398 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-12-18 00:16:29,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:16:29,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326514496] [2021-12-18 00:16:29,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326514496] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:16:29,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713369392] [2021-12-18 00:16:29,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:16:29,398 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:16:29,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:16:29,399 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) [2021-12-18 00:16:29,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-18 00:16:29,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:16:29,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 2909 conjuncts, 141 conjunts are in the unsatisfiable core [2021-12-18 00:16:29,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:16:30,411 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 00:16:30,412 INFO L388 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 [2021-12-18 00:16:30,417 INFO L388 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 5 [2021-12-18 00:16:30,548 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 00:16:30,549 INFO L388 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 20 treesize of output 26 [2021-12-18 00:16:30,558 INFO L388 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 [2021-12-18 00:16:34,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 00:16:34,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 00:16:34,311 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1789 (Array Int Int)) (|save_byte_from_array_~storage#1.base| Int) (v_ArrVal_1791 Int) (v_ArrVal_1788 Int)) (and (= |c_#memory_int| (store |c_old(#memory_int)| |save_byte_from_array_~storage#1.base| (store (store (select |c_old(#memory_int)| |save_byte_from_array_~storage#1.base|) |c_save_byte_from_array_#in~storage#1.offset| v_ArrVal_1788) (+ |c_save_byte_from_array_#in~storage#1.offset| 8) v_ArrVal_1791))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |save_byte_from_array_~storage#1.base| v_ArrVal_1789)))) (< 0 |c_#StackHeapBarrier|)) is different from true [2021-12-18 00:16:34,348 INFO L354 Elim1Store]: treesize reduction 24, result has 56.4 percent of original size [2021-12-18 00:16:34,348 INFO L388 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 3 case distinctions, treesize of input 33 treesize of output 55 [2021-12-18 00:16:34,362 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 00:16:34,362 INFO L388 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 17 treesize of output 23 [2021-12-18 00:16:34,420 INFO L388 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 8 treesize of output 4 [2021-12-18 00:16:34,428 INFO L388 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 8 treesize of output 4 [2021-12-18 00:16:34,516 INFO L388 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 52 treesize of output 40 [2021-12-18 00:16:53,201 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 41 proven. 160 refuted. 0 times theorem prover too weak. 40 trivial. 2 not checked. [2021-12-18 00:16:53,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:16:53,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713369392] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:16:53,770 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 00:16:53,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 47] total 62 [2021-12-18 00:16:53,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282696514] [2021-12-18 00:16:53,771 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 00:16:53,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2021-12-18 00:16:53,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:16:53,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-12-18 00:16:53,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=4412, Unknown=6, NotChecked=134, Total=4830 [2021-12-18 00:16:53,773 INFO L87 Difference]: Start difference. First operand 384 states and 529 transitions. Second operand has 62 states, 54 states have (on average 3.240740740740741) internal successors, (175), 53 states have internal predecessors, (175), 24 states have call successors, (47), 12 states have call predecessors, (47), 17 states have return successors, (46), 19 states have call predecessors, (46), 24 states have call successors, (46) [2021-12-18 00:17:23,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:17:23,956 INFO L93 Difference]: Finished difference Result 899 states and 1230 transitions. [2021-12-18 00:17:23,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-12-18 00:17:23,958 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 54 states have (on average 3.240740740740741) internal successors, (175), 53 states have internal predecessors, (175), 24 states have call successors, (47), 12 states have call predecessors, (47), 17 states have return successors, (46), 19 states have call predecessors, (46), 24 states have call successors, (46) Word has length 174 [2021-12-18 00:17:23,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:17:23,961 INFO L225 Difference]: With dead ends: 899 [2021-12-18 00:17:23,961 INFO L226 Difference]: Without dead ends: 710 [2021-12-18 00:17:23,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 212 SyntacticMatches, 20 SemanticMatches, 125 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 5226 ImplicationChecksByTransitivity, 47.3s TimeCoverageRelationStatistics Valid=1054, Invalid=14670, Unknown=30, NotChecked=248, Total=16002 [2021-12-18 00:17:23,964 INFO L933 BasicCegarLoop]: 311 mSDtfsCounter, 841 mSDsluCounter, 4088 mSDsCounter, 0 mSdLazyCounter, 8397 mSolverCounterSat, 730 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 4399 SdHoareTripleChecker+Invalid, 15547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 730 IncrementalHoareTripleChecker+Valid, 8397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6420 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-12-18 00:17:23,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [841 Valid, 4399 Invalid, 15547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [730 Valid, 8397 Invalid, 0 Unknown, 6420 Unchecked, 5.2s Time] [2021-12-18 00:17:23,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2021-12-18 00:17:23,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 633. [2021-12-18 00:17:23,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 407 states have (on average 1.1326781326781328) internal successors, (461), 415 states have internal predecessors, (461), 174 states have call successors, (174), 45 states have call predecessors, (174), 51 states have return successors, (231), 172 states have call predecessors, (231), 172 states have call successors, (231) [2021-12-18 00:17:23,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 866 transitions. [2021-12-18 00:17:23,999 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 866 transitions. Word has length 174 [2021-12-18 00:17:23,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:17:23,999 INFO L470 AbstractCegarLoop]: Abstraction has 633 states and 866 transitions. [2021-12-18 00:17:23,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 54 states have (on average 3.240740740740741) internal successors, (175), 53 states have internal predecessors, (175), 24 states have call successors, (47), 12 states have call predecessors, (47), 17 states have return successors, (46), 19 states have call predecessors, (46), 24 states have call successors, (46) [2021-12-18 00:17:24,000 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 866 transitions. [2021-12-18 00:17:24,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-12-18 00:17:24,001 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:17:24,001 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:17:24,022 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-12-18 00:17:24,215 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,SelfDestructingSolverStorable21 [2021-12-18 00:17:24,215 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:17:24,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:17:24,216 INFO L85 PathProgramCache]: Analyzing trace with hash -332188911, now seen corresponding path program 1 times [2021-12-18 00:17:24,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:17:24,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653188691] [2021-12-18 00:17:24,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:17:24,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:17:24,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:24,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:17:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:24,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:17:24,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:24,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:17:24,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:24,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 00:17:24,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:24,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 00:17:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:24,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 00:17:24,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:24,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 00:17:24,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:24,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:17:24,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:24,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 00:17:24,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:24,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-18 00:17:24,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:24,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 00:17:24,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:24,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 00:17:24,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:24,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-18 00:17:24,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:24,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-18 00:17:24,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:24,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-18 00:17:24,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:24,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-18 00:17:24,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:24,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-18 00:17:24,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:24,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:17:24,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:24,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:17:24,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:24,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-18 00:17:24,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:24,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-18 00:17:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:24,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-18 00:17:24,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:24,633 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 26 proven. 8 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2021-12-18 00:17:24,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:17:24,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653188691] [2021-12-18 00:17:24,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653188691] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:17:24,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932736182] [2021-12-18 00:17:24,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:17:24,634 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:17:24,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:17:24,644 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) [2021-12-18 00:17:24,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-18 00:17:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:25,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 2873 conjuncts, 54 conjunts are in the unsatisfiable core [2021-12-18 00:17:25,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:17:25,283 INFO L388 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 [2021-12-18 00:17:25,770 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-18 00:17:25,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2021-12-18 00:17:25,774 INFO L388 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 16 treesize of output 8 [2021-12-18 00:17:25,956 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 136 proven. 4 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-12-18 00:17:25,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:17:26,656 INFO L388 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 33 treesize of output 25 [2021-12-18 00:17:26,856 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-12-18 00:17:26,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-12-18 00:17:26,941 INFO L388 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 [2021-12-18 00:17:27,151 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2021-12-18 00:17:27,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932736182] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 00:17:27,152 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 00:17:27,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 18, 16] total 43 [2021-12-18 00:17:27,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577844586] [2021-12-18 00:17:27,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 00:17:27,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-12-18 00:17:27,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:17:27,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-12-18 00:17:27,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1631, Unknown=0, NotChecked=0, Total=1806 [2021-12-18 00:17:27,153 INFO L87 Difference]: Start difference. First operand 633 states and 866 transitions. Second operand has 43 states, 40 states have (on average 5.5) internal successors, (220), 38 states have internal predecessors, (220), 15 states have call successors, (64), 9 states have call predecessors, (64), 13 states have return successors, (63), 12 states have call predecessors, (63), 15 states have call successors, (63) [2021-12-18 00:17:31,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:17:31,304 INFO L93 Difference]: Finished difference Result 1535 states and 2269 transitions. [2021-12-18 00:17:31,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-12-18 00:17:31,304 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 40 states have (on average 5.5) internal successors, (220), 38 states have internal predecessors, (220), 15 states have call successors, (64), 9 states have call predecessors, (64), 13 states have return successors, (63), 12 states have call predecessors, (63), 15 states have call successors, (63) Word has length 173 [2021-12-18 00:17:31,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:17:31,325 INFO L225 Difference]: With dead ends: 1535 [2021-12-18 00:17:31,326 INFO L226 Difference]: Without dead ends: 1137 [2021-12-18 00:17:31,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 372 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1451 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=561, Invalid=5139, Unknown=0, NotChecked=0, Total=5700 [2021-12-18 00:17:31,330 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 953 mSDsluCounter, 1344 mSDsCounter, 0 mSdLazyCounter, 5946 mSolverCounterSat, 1047 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 1504 SdHoareTripleChecker+Invalid, 8240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1047 IncrementalHoareTripleChecker+Valid, 5946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1247 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-18 00:17:31,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1008 Valid, 1504 Invalid, 8240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1047 Valid, 5946 Invalid, 0 Unknown, 1247 Unchecked, 3.2s Time] [2021-12-18 00:17:31,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2021-12-18 00:17:31,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 710. [2021-12-18 00:17:31,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 452 states have (on average 1.1216814159292035) internal successors, (507), 462 states have internal predecessors, (507), 202 states have call successors, (202), 47 states have call predecessors, (202), 55 states have return successors, (288), 200 states have call predecessors, (288), 200 states have call successors, (288) [2021-12-18 00:17:31,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 997 transitions. [2021-12-18 00:17:31,378 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 997 transitions. Word has length 173 [2021-12-18 00:17:31,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:17:31,378 INFO L470 AbstractCegarLoop]: Abstraction has 710 states and 997 transitions. [2021-12-18 00:17:31,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 40 states have (on average 5.5) internal successors, (220), 38 states have internal predecessors, (220), 15 states have call successors, (64), 9 states have call predecessors, (64), 13 states have return successors, (63), 12 states have call predecessors, (63), 15 states have call successors, (63) [2021-12-18 00:17:31,378 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 997 transitions. [2021-12-18 00:17:31,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-12-18 00:17:31,381 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:17:31,381 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:17:31,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-12-18 00:17:31,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:17:31,594 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:17:31,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:17:31,595 INFO L85 PathProgramCache]: Analyzing trace with hash -36841773, now seen corresponding path program 1 times [2021-12-18 00:17:31,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:17:31,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101468493] [2021-12-18 00:17:31,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:17:31,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:17:31,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:31,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:17:31,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:31,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:17:31,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:31,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:17:31,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:31,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 00:17:31,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:31,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 00:17:31,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:31,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 00:17:31,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:31,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 00:17:31,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:31,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:17:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:31,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 00:17:31,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:31,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-18 00:17:31,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:31,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 00:17:31,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:31,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 00:17:31,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:32,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-18 00:17:32,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:32,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-18 00:17:32,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:32,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-18 00:17:32,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:32,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-18 00:17:32,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:32,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-18 00:17:32,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:32,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:17:32,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:32,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:17:32,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:32,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-18 00:17:32,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:32,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-18 00:17:32,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:32,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-18 00:17:32,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:32,175 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 12 proven. 20 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2021-12-18 00:17:32,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:17:32,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101468493] [2021-12-18 00:17:32,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101468493] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:17:32,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654042989] [2021-12-18 00:17:32,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:17:32,176 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:17:32,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:17:32,177 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) [2021-12-18 00:17:32,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-18 00:17:32,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:17:32,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 2870 conjuncts, 81 conjunts are in the unsatisfiable core [2021-12-18 00:17:32,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:17:32,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-18 00:17:33,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 00:17:33,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 00:18:28,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2021-12-18 00:18:28,988 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 105 proven. 64 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-18 00:18:28,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:18:33,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654042989] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:18:33,888 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 00:18:33,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 34 [2021-12-18 00:18:33,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258696517] [2021-12-18 00:18:33,888 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 00:18:33,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-12-18 00:18:33,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:18:33,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-12-18 00:18:33,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1738, Unknown=12, NotChecked=0, Total=1892 [2021-12-18 00:18:33,889 INFO L87 Difference]: Start difference. First operand 710 states and 997 transitions. Second operand has 34 states, 32 states have (on average 5.5625) internal successors, (178), 32 states have internal predecessors, (178), 13 states have call successors, (45), 7 states have call predecessors, (45), 11 states have return successors, (44), 11 states have call predecessors, (44), 13 states have call successors, (44) [2021-12-18 00:19:11,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:19:11,700 INFO L93 Difference]: Finished difference Result 1625 states and 2480 transitions. [2021-12-18 00:19:11,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-12-18 00:19:11,700 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 5.5625) internal successors, (178), 32 states have internal predecessors, (178), 13 states have call successors, (45), 7 states have call predecessors, (45), 11 states have return successors, (44), 11 states have call predecessors, (44), 13 states have call successors, (44) Word has length 173 [2021-12-18 00:19:11,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:19:11,706 INFO L225 Difference]: With dead ends: 1625 [2021-12-18 00:19:11,706 INFO L226 Difference]: Without dead ends: 1313 [2021-12-18 00:19:11,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 319 SyntacticMatches, 24 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2022 ImplicationChecksByTransitivity, 92.1s TimeCoverageRelationStatistics Valid=650, Invalid=6803, Unknown=29, NotChecked=0, Total=7482 [2021-12-18 00:19:11,708 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 603 mSDsluCounter, 3146 mSDsCounter, 0 mSdLazyCounter, 8905 mSolverCounterSat, 666 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 3492 SdHoareTripleChecker+Invalid, 10947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 666 IncrementalHoareTripleChecker+Valid, 8905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1376 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-12-18 00:19:11,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [711 Valid, 3492 Invalid, 10947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [666 Valid, 8905 Invalid, 0 Unknown, 1376 Unchecked, 5.4s Time] [2021-12-18 00:19:11,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2021-12-18 00:19:11,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 853. [2021-12-18 00:19:11,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 526 states have (on average 1.108365019011407) internal successors, (583), 540 states have internal predecessors, (583), 268 states have call successors, (268), 46 states have call predecessors, (268), 58 states have return successors, (438), 266 states have call predecessors, (438), 266 states have call successors, (438) [2021-12-18 00:19:11,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1289 transitions. [2021-12-18 00:19:11,773 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1289 transitions. Word has length 173 [2021-12-18 00:19:11,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:19:11,774 INFO L470 AbstractCegarLoop]: Abstraction has 853 states and 1289 transitions. [2021-12-18 00:19:11,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 5.5625) internal successors, (178), 32 states have internal predecessors, (178), 13 states have call successors, (45), 7 states have call predecessors, (45), 11 states have return successors, (44), 11 states have call predecessors, (44), 13 states have call successors, (44) [2021-12-18 00:19:11,774 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1289 transitions. [2021-12-18 00:19:11,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-12-18 00:19:11,778 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:19:11,778 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:19:11,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-12-18 00:19:11,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:19:11,999 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:19:12,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:19:12,000 INFO L85 PathProgramCache]: Analyzing trace with hash 126191801, now seen corresponding path program 1 times [2021-12-18 00:19:12,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:19:12,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545748497] [2021-12-18 00:19:12,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:19:12,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:19:12,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:12,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:19:12,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:12,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:19:12,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:12,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:19:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:12,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 00:19:12,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:12,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 00:19:12,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:12,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 00:19:12,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:12,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 00:19:12,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:12,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:19:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:12,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 00:19:12,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:12,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-18 00:19:12,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:12,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 00:19:12,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:12,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 00:19:12,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:12,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-18 00:19:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:12,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-18 00:19:12,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:12,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-18 00:19:12,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:12,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-18 00:19:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:12,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-18 00:19:12,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:12,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:19:12,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:12,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:19:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:12,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-18 00:19:12,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:12,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-18 00:19:12,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:12,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-18 00:19:12,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:12,655 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 26 proven. 6 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2021-12-18 00:19:12,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:19:12,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545748497] [2021-12-18 00:19:12,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545748497] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:19:12,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853315448] [2021-12-18 00:19:12,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:19:12,656 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:19:12,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:19:12,671 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) [2021-12-18 00:19:12,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-18 00:19:13,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:13,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 2876 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-18 00:19:13,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:19:13,257 INFO L388 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 [2021-12-18 00:19:13,971 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-12-18 00:19:13,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:19:13,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853315448] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:19:13,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:19:13,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [19] total 30 [2021-12-18 00:19:13,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753412384] [2021-12-18 00:19:13,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:19:13,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-18 00:19:13,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:19:13,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-18 00:19:13,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2021-12-18 00:19:13,972 INFO L87 Difference]: Start difference. First operand 853 states and 1289 transitions. Second operand has 15 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 7 states have call successors, (23), 4 states have call predecessors, (23), 6 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) [2021-12-18 00:19:14,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:19:14,647 INFO L93 Difference]: Finished difference Result 1330 states and 1958 transitions. [2021-12-18 00:19:14,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-18 00:19:14,648 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 7 states have call successors, (23), 4 states have call predecessors, (23), 6 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) Word has length 174 [2021-12-18 00:19:14,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:19:14,660 INFO L225 Difference]: With dead ends: 1330 [2021-12-18 00:19:14,660 INFO L226 Difference]: Without dead ends: 939 [2021-12-18 00:19:14,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 197 SyntacticMatches, 11 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=113, Invalid=1077, Unknown=0, NotChecked=0, Total=1190 [2021-12-18 00:19:14,674 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 132 mSDsluCounter, 1244 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 1512 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 350 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-18 00:19:14,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 1512 Invalid, 1298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 849 Invalid, 0 Unknown, 350 Unchecked, 0.5s Time] [2021-12-18 00:19:14,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2021-12-18 00:19:14,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 824. [2021-12-18 00:19:14,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 517 states have (on average 1.1083172147001934) internal successors, (573), 530 states have internal predecessors, (573), 250 states have call successors, (250), 45 states have call predecessors, (250), 56 states have return successors, (397), 248 states have call predecessors, (397), 248 states have call successors, (397) [2021-12-18 00:19:14,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1220 transitions. [2021-12-18 00:19:14,791 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1220 transitions. Word has length 174 [2021-12-18 00:19:14,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:19:14,793 INFO L470 AbstractCegarLoop]: Abstraction has 824 states and 1220 transitions. [2021-12-18 00:19:14,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 7 states have call successors, (23), 4 states have call predecessors, (23), 6 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) [2021-12-18 00:19:14,794 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1220 transitions. [2021-12-18 00:19:14,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-12-18 00:19:14,801 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:19:14,801 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:19:14,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-12-18 00:19:15,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:19:15,017 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:19:15,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:19:15,017 INFO L85 PathProgramCache]: Analyzing trace with hash -610487917, now seen corresponding path program 1 times [2021-12-18 00:19:15,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:19:15,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008795661] [2021-12-18 00:19:15,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:19:15,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:19:15,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:15,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:19:15,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:15,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:19:15,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:15,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:19:15,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:15,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 00:19:15,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:15,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 00:19:15,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:15,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 00:19:15,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:15,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 00:19:15,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:15,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:19:15,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:15,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 00:19:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:15,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 00:19:15,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:15,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-18 00:19:15,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:15,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 00:19:15,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:15,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:19:15,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:15,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-18 00:19:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:15,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-18 00:19:15,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:15,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-18 00:19:15,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:15,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-18 00:19:15,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:15,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-18 00:19:15,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:15,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:19:15,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:15,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:19:15,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:15,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-18 00:19:15,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:15,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-18 00:19:15,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:15,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-18 00:19:15,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:15,388 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 2 proven. 23 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-12-18 00:19:15,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:19:15,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008795661] [2021-12-18 00:19:15,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008795661] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:19:15,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489679156] [2021-12-18 00:19:15,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:19:15,389 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:19:15,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:19:15,404 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:19:15,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-12-18 00:19:15,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:15,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 2913 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-18 00:19:15,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:19:16,164 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-18 00:19:16,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 18 [2021-12-18 00:19:16,287 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 148 proven. 8 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-12-18 00:19:16,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:19:16,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2021-12-18 00:19:16,671 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-12-18 00:19:16,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-12-18 00:19:16,739 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2021-12-18 00:19:16,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489679156] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 00:19:16,739 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 00:19:16,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 11] total 23 [2021-12-18 00:19:16,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18967734] [2021-12-18 00:19:16,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 00:19:16,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-18 00:19:16,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:19:16,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-18 00:19:16,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2021-12-18 00:19:16,740 INFO L87 Difference]: Start difference. First operand 824 states and 1220 transitions. Second operand has 23 states, 22 states have (on average 6.7272727272727275) internal successors, (148), 21 states have internal predecessors, (148), 8 states have call successors, (48), 7 states have call predecessors, (48), 7 states have return successors, (45), 6 states have call predecessors, (45), 8 states have call successors, (45) [2021-12-18 00:19:18,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:19:18,275 INFO L93 Difference]: Finished difference Result 1133 states and 1625 transitions. [2021-12-18 00:19:18,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-18 00:19:18,284 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 6.7272727272727275) internal successors, (148), 21 states have internal predecessors, (148), 8 states have call successors, (48), 7 states have call predecessors, (48), 7 states have return successors, (45), 6 states have call predecessors, (45), 8 states have call successors, (45) Word has length 180 [2021-12-18 00:19:18,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:19:18,287 INFO L225 Difference]: With dead ends: 1133 [2021-12-18 00:19:18,287 INFO L226 Difference]: Without dead ends: 910 [2021-12-18 00:19:18,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 386 SyntacticMatches, 11 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=214, Invalid=1268, Unknown=0, NotChecked=0, Total=1482 [2021-12-18 00:19:18,289 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 329 mSDsluCounter, 1378 mSDsCounter, 0 mSdLazyCounter, 1689 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 2235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 433 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-18 00:19:18,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [389 Valid, 1593 Invalid, 2235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1689 Invalid, 0 Unknown, 433 Unchecked, 1.1s Time] [2021-12-18 00:19:18,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2021-12-18 00:19:18,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 859. [2021-12-18 00:19:18,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 545 states have (on average 1.111926605504587) internal successors, (606), 558 states have internal predecessors, (606), 254 states have call successors, (254), 48 states have call predecessors, (254), 59 states have return successors, (403), 252 states have call predecessors, (403), 252 states have call successors, (403) [2021-12-18 00:19:18,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1263 transitions. [2021-12-18 00:19:18,349 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1263 transitions. Word has length 180 [2021-12-18 00:19:18,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:19:18,350 INFO L470 AbstractCegarLoop]: Abstraction has 859 states and 1263 transitions. [2021-12-18 00:19:18,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 6.7272727272727275) internal successors, (148), 21 states have internal predecessors, (148), 8 states have call successors, (48), 7 states have call predecessors, (48), 7 states have return successors, (45), 6 states have call predecessors, (45), 8 states have call successors, (45) [2021-12-18 00:19:18,350 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1263 transitions. [2021-12-18 00:19:18,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-12-18 00:19:18,353 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:19:18,353 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:19:18,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-12-18 00:19:18,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-18 00:19:18,567 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:19:18,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:19:18,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1674555315, now seen corresponding path program 1 times [2021-12-18 00:19:18,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:19:18,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836337418] [2021-12-18 00:19:18,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:19:18,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:19:18,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:18,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:19:18,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:18,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:19:18,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:18,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:19:18,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:18,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 00:19:18,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:18,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 00:19:18,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:18,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 00:19:18,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:18,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 00:19:18,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:18,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:19:18,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:18,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 00:19:18,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:18,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 00:19:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:18,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-18 00:19:18,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:18,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 00:19:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:19,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 00:19:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:19,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-18 00:19:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:19,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-18 00:19:19,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:19,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-18 00:19:19,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:19,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-18 00:19:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:19,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:19:19,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:19,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:19:19,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:19,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-18 00:19:19,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:19,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-18 00:19:19,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:19,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-18 00:19:19,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:19,237 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 8 proven. 29 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-12-18 00:19:19,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:19:19,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836337418] [2021-12-18 00:19:19,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836337418] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:19:19,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976527895] [2021-12-18 00:19:19,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:19:19,238 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:19:19,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:19:19,239 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:19:19,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-12-18 00:19:19,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:19,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 2873 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-18 00:19:19,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:19:19,864 INFO L388 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 [2021-12-18 00:19:20,194 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-12-18 00:19:20,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:19:20,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976527895] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:19:20,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:19:20,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [22] total 32 [2021-12-18 00:19:20,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17929457] [2021-12-18 00:19:20,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:19:20,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-18 00:19:20,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:19:20,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-18 00:19:20,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2021-12-18 00:19:20,197 INFO L87 Difference]: Start difference. First operand 859 states and 1263 transitions. Second operand has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 10 states have internal predecessors, (85), 5 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2021-12-18 00:19:20,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:19:20,411 INFO L93 Difference]: Finished difference Result 1254 states and 1777 transitions. [2021-12-18 00:19:20,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 00:19:20,412 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 10 states have internal predecessors, (85), 5 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) Word has length 173 [2021-12-18 00:19:20,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:19:20,414 INFO L225 Difference]: With dead ends: 1254 [2021-12-18 00:19:20,414 INFO L226 Difference]: Without dead ends: 623 [2021-12-18 00:19:20,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=967, Unknown=0, NotChecked=0, Total=1056 [2021-12-18 00:19:20,416 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 53 mSDsluCounter, 1259 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 134 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 00:19:20,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 1447 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 123 Invalid, 0 Unknown, 134 Unchecked, 0.1s Time] [2021-12-18 00:19:20,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2021-12-18 00:19:20,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 617. [2021-12-18 00:19:20,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 411 states have (on average 1.1070559610705597) internal successors, (455), 424 states have internal predecessors, (455), 155 states have call successors, (155), 39 states have call predecessors, (155), 50 states have return successors, (233), 153 states have call predecessors, (233), 153 states have call successors, (233) [2021-12-18 00:19:20,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 843 transitions. [2021-12-18 00:19:20,453 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 843 transitions. Word has length 173 [2021-12-18 00:19:20,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:19:20,453 INFO L470 AbstractCegarLoop]: Abstraction has 617 states and 843 transitions. [2021-12-18 00:19:20,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 10 states have internal predecessors, (85), 5 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2021-12-18 00:19:20,453 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 843 transitions. [2021-12-18 00:19:20,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-18 00:19:20,455 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:19:20,455 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:19:20,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-12-18 00:19:20,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-18 00:19:20,671 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:19:20,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:19:20,672 INFO L85 PathProgramCache]: Analyzing trace with hash 184677600, now seen corresponding path program 1 times [2021-12-18 00:19:20,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:19:20,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256683434] [2021-12-18 00:19:20,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:19:20,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:19:20,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:20,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:19:20,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:20,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:19:20,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:20,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:19:20,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:20,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 00:19:20,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:20,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 00:19:20,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:20,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 00:19:20,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:20,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 00:19:20,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:20,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:19:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:20,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 00:19:20,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:20,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-18 00:19:20,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:20,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 00:19:20,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:20,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 00:19:20,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:20,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-18 00:19:20,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:20,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-18 00:19:20,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:20,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-18 00:19:20,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:20,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-18 00:19:20,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:20,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 00:19:20,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:21,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:19:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:21,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:19:21,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:21,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-18 00:19:21,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:21,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-18 00:19:21,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:21,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-18 00:19:21,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:21,239 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 36 proven. 6 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2021-12-18 00:19:21,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:19:21,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256683434] [2021-12-18 00:19:21,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256683434] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:19:21,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093424150] [2021-12-18 00:19:21,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:19:21,240 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:19:21,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:19:21,240 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:19:21,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-12-18 00:19:21,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:21,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 2887 conjuncts, 73 conjunts are in the unsatisfiable core [2021-12-18 00:19:21,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:19:22,206 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 00:19:22,206 INFO L388 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 26 treesize of output 30 [2021-12-18 00:19:22,210 INFO L388 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 15 treesize of output 11 [2021-12-18 00:19:22,286 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 00:19:22,286 INFO L388 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 30 treesize of output 34 [2021-12-18 00:19:23,258 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 00:19:23,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 33 [2021-12-18 00:19:23,429 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 81 proven. 70 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-12-18 00:19:23,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:19:24,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093424150] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:19:24,415 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 00:19:24,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 33 [2021-12-18 00:19:24,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941369876] [2021-12-18 00:19:24,416 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 00:19:24,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-12-18 00:19:24,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:19:24,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-12-18 00:19:24,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1663, Unknown=4, NotChecked=0, Total=1806 [2021-12-18 00:19:24,417 INFO L87 Difference]: Start difference. First operand 617 states and 843 transitions. Second operand has 33 states, 29 states have (on average 5.931034482758621) internal successors, (172), 31 states have internal predecessors, (172), 17 states have call successors, (44), 6 states have call predecessors, (44), 8 states have return successors, (43), 12 states have call predecessors, (43), 17 states have call successors, (43) [2021-12-18 00:19:30,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:19:30,411 INFO L93 Difference]: Finished difference Result 1320 states and 1921 transitions. [2021-12-18 00:19:30,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-12-18 00:19:30,412 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 29 states have (on average 5.931034482758621) internal successors, (172), 31 states have internal predecessors, (172), 17 states have call successors, (44), 6 states have call predecessors, (44), 8 states have return successors, (43), 12 states have call predecessors, (43), 17 states have call successors, (43) Word has length 179 [2021-12-18 00:19:30,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:19:30,416 INFO L225 Difference]: With dead ends: 1320 [2021-12-18 00:19:30,416 INFO L226 Difference]: Without dead ends: 1060 [2021-12-18 00:19:30,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 319 SyntacticMatches, 21 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2080 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=718, Invalid=7109, Unknown=5, NotChecked=0, Total=7832 [2021-12-18 00:19:30,418 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 585 mSDsluCounter, 2309 mSDsCounter, 0 mSdLazyCounter, 7502 mSolverCounterSat, 654 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 2556 SdHoareTripleChecker+Invalid, 8862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 654 IncrementalHoareTripleChecker+Valid, 7502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 706 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-12-18 00:19:30,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [659 Valid, 2556 Invalid, 8862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [654 Valid, 7502 Invalid, 0 Unknown, 706 Unchecked, 4.4s Time] [2021-12-18 00:19:30,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2021-12-18 00:19:30,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 640. [2021-12-18 00:19:30,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 422 states have (on average 1.1042654028436019) internal successors, (466), 437 states have internal predecessors, (466), 164 states have call successors, (164), 40 states have call predecessors, (164), 53 states have return successors, (258), 162 states have call predecessors, (258), 162 states have call successors, (258) [2021-12-18 00:19:30,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 888 transitions. [2021-12-18 00:19:30,489 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 888 transitions. Word has length 179 [2021-12-18 00:19:30,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:19:30,489 INFO L470 AbstractCegarLoop]: Abstraction has 640 states and 888 transitions. [2021-12-18 00:19:30,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 29 states have (on average 5.931034482758621) internal successors, (172), 31 states have internal predecessors, (172), 17 states have call successors, (44), 6 states have call predecessors, (44), 8 states have return successors, (43), 12 states have call predecessors, (43), 17 states have call successors, (43) [2021-12-18 00:19:30,489 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 888 transitions. [2021-12-18 00:19:30,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-12-18 00:19:30,491 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:19:30,492 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:19:30,515 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-12-18 00:19:30,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-18 00:19:30,714 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:19:30,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:19:30,714 INFO L85 PathProgramCache]: Analyzing trace with hash -2083109344, now seen corresponding path program 1 times [2021-12-18 00:19:30,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:19:30,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250319997] [2021-12-18 00:19:30,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:19:30,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:19:30,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:30,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:19:30,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:30,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:19:30,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:30,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:19:30,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:30,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 00:19:30,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:30,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 00:19:30,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:30,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 00:19:30,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:30,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 00:19:30,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:30,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:19:30,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:30,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 00:19:30,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:30,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-18 00:19:30,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:30,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 00:19:30,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:30,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 00:19:30,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:30,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:19:30,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:30,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 00:19:30,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:30,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-18 00:19:30,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:30,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-18 00:19:30,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:31,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-18 00:19:31,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:31,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 00:19:31,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:31,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:19:31,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:31,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:19:31,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:31,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-18 00:19:31,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:31,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-18 00:19:31,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:31,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-18 00:19:31,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:31,190 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 36 proven. 8 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2021-12-18 00:19:31,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:19:31,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250319997] [2021-12-18 00:19:31,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250319997] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:19:31,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100665004] [2021-12-18 00:19:31,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:19:31,191 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:19:31,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:19:31,192 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:19:31,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-12-18 00:19:31,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:31,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 2927 conjuncts, 81 conjunts are in the unsatisfiable core [2021-12-18 00:19:31,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:19:31,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 00:19:31,974 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2447 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_save_byte_from_array_~storage#1.base| v_ArrVal_2447))) is different from true [2021-12-18 00:19:31,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 00:19:31,985 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2448 (Array Int Int)) (|save_byte_from_array_~storage#1.base| Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |save_byte_from_array_~storage#1.base| v_ArrVal_2448))) is different from true [2021-12-18 00:19:31,997 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 00:19:31,998 INFO L388 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 [2021-12-18 00:19:32,001 INFO L388 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 [2021-12-18 00:19:32,996 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 110 proven. 59 refuted. 0 times theorem prover too weak. 86 trivial. 2 not checked. [2021-12-18 00:19:32,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:19:33,867 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 32 proven. 14 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2021-12-18 00:19:33,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100665004] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 00:19:33,867 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 00:19:33,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 24, 11] total 44 [2021-12-18 00:19:33,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832873841] [2021-12-18 00:19:33,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 00:19:33,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-12-18 00:19:33,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:19:33,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-12-18 00:19:33,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1559, Unknown=2, NotChecked=162, Total=1892 [2021-12-18 00:19:33,869 INFO L87 Difference]: Start difference. First operand 640 states and 888 transitions. Second operand has 44 states, 41 states have (on average 5.048780487804878) internal successors, (207), 42 states have internal predecessors, (207), 14 states have call successors, (54), 7 states have call predecessors, (54), 11 states have return successors, (51), 11 states have call predecessors, (51), 13 states have call successors, (51) [2021-12-18 00:19:42,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:19:42,438 INFO L93 Difference]: Finished difference Result 1453 states and 2149 transitions. [2021-12-18 00:19:42,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-12-18 00:19:42,439 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 41 states have (on average 5.048780487804878) internal successors, (207), 42 states have internal predecessors, (207), 14 states have call successors, (54), 7 states have call predecessors, (54), 11 states have return successors, (51), 11 states have call predecessors, (51), 13 states have call successors, (51) Word has length 186 [2021-12-18 00:19:42,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:19:42,444 INFO L225 Difference]: With dead ends: 1453 [2021-12-18 00:19:42,444 INFO L226 Difference]: Without dead ends: 1191 [2021-12-18 00:19:42,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 387 SyntacticMatches, 14 SemanticMatches, 78 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1777 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=761, Invalid=5220, Unknown=33, NotChecked=306, Total=6320 [2021-12-18 00:19:42,446 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 749 mSDsluCounter, 2170 mSDsCounter, 0 mSdLazyCounter, 6557 mSolverCounterSat, 830 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 2450 SdHoareTripleChecker+Invalid, 9791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 830 IncrementalHoareTripleChecker+Valid, 6557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2404 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-12-18 00:19:42,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [811 Valid, 2450 Invalid, 9791 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [830 Valid, 6557 Invalid, 0 Unknown, 2404 Unchecked, 4.6s Time] [2021-12-18 00:19:42,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2021-12-18 00:19:42,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 788. [2021-12-18 00:19:42,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 509 states have (on average 1.111984282907662) internal successors, (566), 526 states have internal predecessors, (566), 212 states have call successors, (212), 51 states have call predecessors, (212), 66 states have return successors, (313), 210 states have call predecessors, (313), 210 states have call successors, (313) [2021-12-18 00:19:42,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1091 transitions. [2021-12-18 00:19:42,505 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1091 transitions. Word has length 186 [2021-12-18 00:19:42,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:19:42,505 INFO L470 AbstractCegarLoop]: Abstraction has 788 states and 1091 transitions. [2021-12-18 00:19:42,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 41 states have (on average 5.048780487804878) internal successors, (207), 42 states have internal predecessors, (207), 14 states have call successors, (54), 7 states have call predecessors, (54), 11 states have return successors, (51), 11 states have call predecessors, (51), 13 states have call successors, (51) [2021-12-18 00:19:42,506 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1091 transitions. [2021-12-18 00:19:42,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-12-18 00:19:42,508 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:19:42,508 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:19:42,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-12-18 00:19:42,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:19:42,742 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:19:42,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:19:42,742 INFO L85 PathProgramCache]: Analyzing trace with hash -52051994, now seen corresponding path program 1 times [2021-12-18 00:19:42,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:19:42,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698463926] [2021-12-18 00:19:42,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:19:42,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:19:43,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:43,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:19:43,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:43,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:19:43,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:43,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:19:43,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:43,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 00:19:43,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:43,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 00:19:43,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:43,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 00:19:43,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:43,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 00:19:43,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:43,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:19:43,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:43,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 00:19:43,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:43,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-18 00:19:43,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:43,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 00:19:43,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:43,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 00:19:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:43,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:19:43,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:44,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 00:19:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:44,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-18 00:19:44,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:44,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-18 00:19:44,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:44,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-18 00:19:44,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:44,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 00:19:44,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:44,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:19:44,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:44,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:19:44,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:44,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-18 00:19:44,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:44,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-18 00:19:44,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:44,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-18 00:19:44,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:44,233 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 38 proven. 37 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-12-18 00:19:44,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:19:44,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698463926] [2021-12-18 00:19:44,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698463926] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:19:44,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951101572] [2021-12-18 00:19:44,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:19:44,234 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:19:44,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:19:44,235 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:19:44,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-12-18 00:19:44,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:19:44,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 2934 conjuncts, 62 conjunts are in the unsatisfiable core [2021-12-18 00:19:44,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:20:26,348 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 141 proven. 5 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-12-18 00:20:26,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:20:26,988 INFO L354 Elim1Store]: treesize reduction 39, result has 46.6 percent of original size [2021-12-18 00:20:26,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 48 [2021-12-18 00:20:27,453 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 32 proven. 14 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2021-12-18 00:20:27,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951101572] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 00:20:27,454 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 00:20:27,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 15, 12] total 47 [2021-12-18 00:20:27,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127697518] [2021-12-18 00:20:27,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 00:20:27,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-12-18 00:20:27,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:20:27,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-12-18 00:20:27,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1988, Unknown=5, NotChecked=0, Total=2162 [2021-12-18 00:20:27,456 INFO L87 Difference]: Start difference. First operand 788 states and 1091 transitions. Second operand has 47 states, 43 states have (on average 4.813953488372093) internal successors, (207), 42 states have internal predecessors, (207), 14 states have call successors, (66), 5 states have call predecessors, (66), 11 states have return successors, (65), 12 states have call predecessors, (65), 13 states have call successors, (65) [2021-12-18 00:20:42,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:20:42,218 INFO L93 Difference]: Finished difference Result 1034 states and 1371 transitions. [2021-12-18 00:20:42,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-12-18 00:20:42,218 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 43 states have (on average 4.813953488372093) internal successors, (207), 42 states have internal predecessors, (207), 14 states have call successors, (66), 5 states have call predecessors, (66), 11 states have return successors, (65), 12 states have call predecessors, (65), 13 states have call successors, (65) Word has length 186 [2021-12-18 00:20:42,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:20:42,225 INFO L225 Difference]: With dead ends: 1034 [2021-12-18 00:20:42,225 INFO L226 Difference]: Without dead ends: 868 [2021-12-18 00:20:42,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 398 SyntacticMatches, 19 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1887 ImplicationChecksByTransitivity, 54.1s TimeCoverageRelationStatistics Valid=670, Invalid=5640, Unknown=10, NotChecked=0, Total=6320 [2021-12-18 00:20:42,233 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 387 mSDsluCounter, 1354 mSDsCounter, 0 mSdLazyCounter, 3747 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 5080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 3747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1169 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-18 00:20:42,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 1515 Invalid, 5080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 3747 Invalid, 0 Unknown, 1169 Unchecked, 2.4s Time] [2021-12-18 00:20:42,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2021-12-18 00:20:42,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 868. [2021-12-18 00:20:42,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 577 states have (on average 1.1057192374350087) internal successors, (638), 598 states have internal predecessors, (638), 212 states have call successors, (212), 59 states have call predecessors, (212), 78 states have return successors, (310), 210 states have call predecessors, (310), 210 states have call successors, (310) [2021-12-18 00:20:42,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1160 transitions. [2021-12-18 00:20:42,294 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1160 transitions. Word has length 186 [2021-12-18 00:20:42,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:20:42,294 INFO L470 AbstractCegarLoop]: Abstraction has 868 states and 1160 transitions. [2021-12-18 00:20:42,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 43 states have (on average 4.813953488372093) internal successors, (207), 42 states have internal predecessors, (207), 14 states have call successors, (66), 5 states have call predecessors, (66), 11 states have return successors, (65), 12 states have call predecessors, (65), 13 states have call successors, (65) [2021-12-18 00:20:42,295 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1160 transitions. [2021-12-18 00:20:42,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-12-18 00:20:42,298 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:20:42,298 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:20:42,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-12-18 00:20:42,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:20:42,512 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:20:42,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:20:42,512 INFO L85 PathProgramCache]: Analyzing trace with hash 206113444, now seen corresponding path program 1 times [2021-12-18 00:20:42,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:20:42,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247681675] [2021-12-18 00:20:42,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:20:42,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:20:42,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:42,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:20:42,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:42,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:20:42,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:42,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:20:42,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:42,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 00:20:42,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:42,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 00:20:42,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:42,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 00:20:42,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:42,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 00:20:42,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:42,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:20:42,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:42,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 00:20:42,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:42,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-18 00:20:42,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:42,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 00:20:42,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:42,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 00:20:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:42,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:20:42,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:42,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 00:20:42,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:42,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-18 00:20:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:42,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-18 00:20:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:42,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-18 00:20:42,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:42,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 00:20:42,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:42,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:20:42,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:42,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:20:42,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:42,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-18 00:20:42,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:42,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-18 00:20:42,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:42,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-18 00:20:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:42,780 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2021-12-18 00:20:42,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:20:42,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247681675] [2021-12-18 00:20:42,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247681675] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:20:42,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 00:20:42,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 00:20:42,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186064280] [2021-12-18 00:20:42,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:20:42,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 00:20:42,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:20:42,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 00:20:42,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-18 00:20:42,782 INFO L87 Difference]: Start difference. First operand 868 states and 1160 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2021-12-18 00:20:43,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:20:43,286 INFO L93 Difference]: Finished difference Result 1153 states and 1555 transitions. [2021-12-18 00:20:43,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 00:20:43,286 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) Word has length 186 [2021-12-18 00:20:43,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:20:43,289 INFO L225 Difference]: With dead ends: 1153 [2021-12-18 00:20:43,289 INFO L226 Difference]: Without dead ends: 839 [2021-12-18 00:20:43,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-18 00:20:43,291 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 164 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-18 00:20:43,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 530 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-18 00:20:43,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2021-12-18 00:20:43,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 839. [2021-12-18 00:20:43,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 559 states have (on average 1.105545617173524) internal successors, (618), 578 states have internal predecessors, (618), 203 states have call successors, (203), 59 states have call predecessors, (203), 76 states have return successors, (281), 201 states have call predecessors, (281), 201 states have call successors, (281) [2021-12-18 00:20:43,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1102 transitions. [2021-12-18 00:20:43,351 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1102 transitions. Word has length 186 [2021-12-18 00:20:43,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:20:43,351 INFO L470 AbstractCegarLoop]: Abstraction has 839 states and 1102 transitions. [2021-12-18 00:20:43,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 2 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2021-12-18 00:20:43,352 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1102 transitions. [2021-12-18 00:20:43,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-12-18 00:20:43,354 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:20:43,354 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:20:43,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-18 00:20:43,354 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:20:43,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:20:43,354 INFO L85 PathProgramCache]: Analyzing trace with hash 269918022, now seen corresponding path program 1 times [2021-12-18 00:20:43,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:20:43,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900557222] [2021-12-18 00:20:43,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:20:43,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:20:43,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:43,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:20:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:43,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:20:43,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:43,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:20:43,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:43,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 00:20:43,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:43,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 00:20:43,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:43,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 00:20:43,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:43,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 00:20:43,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:43,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:20:43,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:43,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 00:20:43,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:43,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-18 00:20:43,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:43,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 00:20:43,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:43,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 00:20:43,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:43,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-18 00:20:43,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:43,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-18 00:20:43,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:43,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-18 00:20:43,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:43,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-18 00:20:43,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:43,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 00:20:43,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:43,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:20:43,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:43,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:20:43,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:43,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-18 00:20:43,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:43,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-18 00:20:43,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:43,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-18 00:20:43,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:43,816 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 4 proven. 38 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2021-12-18 00:20:43,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:20:43,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900557222] [2021-12-18 00:20:43,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900557222] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:20:43,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923622832] [2021-12-18 00:20:43,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:20:43,817 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:20:43,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:20:43,818 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:20:43,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-12-18 00:20:44,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:44,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 2890 conjuncts, 46 conjunts are in the unsatisfiable core [2021-12-18 00:20:44,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:20:45,120 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 166 proven. 6 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-12-18 00:20:45,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:20:45,602 INFO L388 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 28 treesize of output 16 [2021-12-18 00:20:45,677 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-12-18 00:20:45,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-12-18 00:20:45,761 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 2 proven. 44 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-12-18 00:20:45,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923622832] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 00:20:45,762 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 00:20:45,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 12] total 29 [2021-12-18 00:20:45,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938626708] [2021-12-18 00:20:45,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 00:20:45,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-18 00:20:45,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:20:45,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-18 00:20:45,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=715, Unknown=0, NotChecked=0, Total=812 [2021-12-18 00:20:45,763 INFO L87 Difference]: Start difference. First operand 839 states and 1102 transitions. Second operand has 29 states, 28 states have (on average 6.535714285714286) internal successors, (183), 27 states have internal predecessors, (183), 8 states have call successors, (47), 7 states have call predecessors, (47), 9 states have return successors, (45), 7 states have call predecessors, (45), 8 states have call successors, (45) [2021-12-18 00:20:48,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:20:48,777 INFO L93 Difference]: Finished difference Result 1347 states and 1763 transitions. [2021-12-18 00:20:48,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-18 00:20:48,778 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 6.535714285714286) internal successors, (183), 27 states have internal predecessors, (183), 8 states have call successors, (47), 7 states have call predecessors, (47), 9 states have return successors, (45), 7 states have call predecessors, (45), 8 states have call successors, (45) Word has length 180 [2021-12-18 00:20:48,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:20:48,782 INFO L225 Difference]: With dead ends: 1347 [2021-12-18 00:20:48,782 INFO L226 Difference]: Without dead ends: 998 [2021-12-18 00:20:48,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 386 SyntacticMatches, 16 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=364, Invalid=1988, Unknown=0, NotChecked=0, Total=2352 [2021-12-18 00:20:48,786 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 553 mSDsluCounter, 1779 mSDsCounter, 0 mSdLazyCounter, 3976 mSolverCounterSat, 478 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 2064 SdHoareTripleChecker+Invalid, 5427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 478 IncrementalHoareTripleChecker+Valid, 3976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 973 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-18 00:20:48,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [637 Valid, 2064 Invalid, 5427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [478 Valid, 3976 Invalid, 0 Unknown, 973 Unchecked, 2.4s Time] [2021-12-18 00:20:48,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2021-12-18 00:20:48,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 788. [2021-12-18 00:20:48,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 532 states have (on average 1.1015037593984962) internal successors, (586), 549 states have internal predecessors, (586), 182 states have call successors, (182), 58 states have call predecessors, (182), 73 states have return successors, (247), 180 states have call predecessors, (247), 180 states have call successors, (247) [2021-12-18 00:20:48,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1015 transitions. [2021-12-18 00:20:48,902 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1015 transitions. Word has length 180 [2021-12-18 00:20:48,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:20:48,902 INFO L470 AbstractCegarLoop]: Abstraction has 788 states and 1015 transitions. [2021-12-18 00:20:48,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 6.535714285714286) internal successors, (183), 27 states have internal predecessors, (183), 8 states have call successors, (47), 7 states have call predecessors, (47), 9 states have return successors, (45), 7 states have call predecessors, (45), 8 states have call successors, (45) [2021-12-18 00:20:48,902 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1015 transitions. [2021-12-18 00:20:48,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-12-18 00:20:48,911 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:20:48,912 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:20:48,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-12-18 00:20:49,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-12-18 00:20:49,113 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:20:49,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:20:49,114 INFO L85 PathProgramCache]: Analyzing trace with hash 324310920, now seen corresponding path program 1 times [2021-12-18 00:20:49,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:20:49,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806316822] [2021-12-18 00:20:49,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:20:49,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:20:49,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:49,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:20:49,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:49,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:20:49,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:49,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:20:49,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:49,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 00:20:49,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:49,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 00:20:49,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:49,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 00:20:49,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:49,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 00:20:49,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:49,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:20:49,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:49,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 00:20:49,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:49,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-18 00:20:49,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:49,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 00:20:49,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:49,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 00:20:49,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:49,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-18 00:20:49,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:49,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-18 00:20:49,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:49,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-18 00:20:49,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:49,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-18 00:20:49,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:49,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 00:20:49,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:49,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:20:49,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:49,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:20:49,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:49,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-18 00:20:49,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:49,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-18 00:20:49,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:49,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-18 00:20:49,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:49,879 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 32 proven. 13 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2021-12-18 00:20:49,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:20:49,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806316822] [2021-12-18 00:20:49,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806316822] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:20:49,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20136537] [2021-12-18 00:20:49,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:20:49,880 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:20:49,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:20:49,881 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:20:49,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-12-18 00:20:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:50,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 2885 conjuncts, 58 conjunts are in the unsatisfiable core [2021-12-18 00:20:50,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:20:50,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 00:20:51,206 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 122 proven. 12 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-12-18 00:20:51,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:20:51,674 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 32 proven. 14 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-12-18 00:20:51,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20136537] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 00:20:51,674 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 00:20:51,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 9] total 30 [2021-12-18 00:20:51,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179348487] [2021-12-18 00:20:51,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 00:20:51,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-18 00:20:51,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:20:51,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-18 00:20:51,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=774, Unknown=0, NotChecked=0, Total=870 [2021-12-18 00:20:51,675 INFO L87 Difference]: Start difference. First operand 788 states and 1015 transitions. Second operand has 30 states, 29 states have (on average 6.379310344827586) internal successors, (185), 28 states have internal predecessors, (185), 9 states have call successors, (53), 6 states have call predecessors, (53), 8 states have return successors, (53), 8 states have call predecessors, (53), 8 states have call successors, (53) [2021-12-18 00:20:53,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:20:53,905 INFO L93 Difference]: Finished difference Result 1221 states and 1589 transitions. [2021-12-18 00:20:53,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-18 00:20:53,905 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 6.379310344827586) internal successors, (185), 28 states have internal predecessors, (185), 9 states have call successors, (53), 6 states have call predecessors, (53), 8 states have return successors, (53), 8 states have call predecessors, (53), 8 states have call successors, (53) Word has length 180 [2021-12-18 00:20:53,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:20:53,909 INFO L225 Difference]: With dead ends: 1221 [2021-12-18 00:20:53,909 INFO L226 Difference]: Without dead ends: 953 [2021-12-18 00:20:53,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 381 SyntacticMatches, 11 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=274, Invalid=1618, Unknown=0, NotChecked=0, Total=1892 [2021-12-18 00:20:53,911 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 538 mSDsluCounter, 1793 mSDsCounter, 0 mSdLazyCounter, 2991 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 2064 SdHoareTripleChecker+Invalid, 3824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 2991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 498 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-18 00:20:53,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [565 Valid, 2064 Invalid, 3824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 2991 Invalid, 0 Unknown, 498 Unchecked, 1.7s Time] [2021-12-18 00:20:53,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2021-12-18 00:20:53,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 809. [2021-12-18 00:20:53,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 547 states have (on average 1.1005484460694699) internal successors, (602), 563 states have internal predecessors, (602), 184 states have call successors, (184), 63 states have call predecessors, (184), 77 states have return successors, (242), 182 states have call predecessors, (242), 182 states have call successors, (242) [2021-12-18 00:20:53,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 1028 transitions. [2021-12-18 00:20:53,971 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 1028 transitions. Word has length 180 [2021-12-18 00:20:53,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:20:53,972 INFO L470 AbstractCegarLoop]: Abstraction has 809 states and 1028 transitions. [2021-12-18 00:20:53,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 6.379310344827586) internal successors, (185), 28 states have internal predecessors, (185), 9 states have call successors, (53), 6 states have call predecessors, (53), 8 states have return successors, (53), 8 states have call predecessors, (53), 8 states have call successors, (53) [2021-12-18 00:20:53,972 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 1028 transitions. [2021-12-18 00:20:53,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-18 00:20:53,974 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:20:53,974 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:20:53,995 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-12-18 00:20:54,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-12-18 00:20:54,187 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:20:54,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:20:54,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1794783315, now seen corresponding path program 1 times [2021-12-18 00:20:54,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:20:54,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132069524] [2021-12-18 00:20:54,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:20:54,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:20:54,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:54,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:20:54,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:54,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:20:54,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:54,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:20:54,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:54,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 00:20:54,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:54,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 00:20:54,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:54,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 00:20:54,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:54,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 00:20:54,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:54,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:20:54,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:54,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 00:20:54,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:54,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-18 00:20:54,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:54,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 00:20:54,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:54,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 00:20:54,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:54,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:20:54,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:54,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 00:20:54,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:54,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-18 00:20:54,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:54,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-18 00:20:54,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:54,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-18 00:20:54,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:54,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 00:20:54,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:54,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:20:54,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:54,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:20:54,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:54,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-18 00:20:54,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:54,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-18 00:20:54,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:54,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-18 00:20:54,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:54,487 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2021-12-18 00:20:54,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:20:54,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132069524] [2021-12-18 00:20:54,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132069524] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:20:54,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 00:20:54,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-18 00:20:54,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026774028] [2021-12-18 00:20:54,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:20:54,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-18 00:20:54,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:20:54,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-18 00:20:54,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-18 00:20:54,490 INFO L87 Difference]: Start difference. First operand 809 states and 1028 transitions. Second operand has 12 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 8 states have internal predecessors, (74), 2 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2021-12-18 00:20:54,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:20:54,944 INFO L93 Difference]: Finished difference Result 825 states and 1046 transitions. [2021-12-18 00:20:54,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-18 00:20:54,951 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 8 states have internal predecessors, (74), 2 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) Word has length 189 [2021-12-18 00:20:54,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:20:54,954 INFO L225 Difference]: With dead ends: 825 [2021-12-18 00:20:54,955 INFO L226 Difference]: Without dead ends: 823 [2021-12-18 00:20:54,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-12-18 00:20:54,955 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 161 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-18 00:20:54,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 1290 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-18 00:20:54,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2021-12-18 00:20:55,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 820. [2021-12-18 00:20:55,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 553 states have (on average 1.0994575045207957) internal successors, (608), 569 states have internal predecessors, (608), 187 states have call successors, (187), 65 states have call predecessors, (187), 79 states have return successors, (245), 185 states have call predecessors, (245), 185 states have call successors, (245) [2021-12-18 00:20:55,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1040 transitions. [2021-12-18 00:20:55,011 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1040 transitions. Word has length 189 [2021-12-18 00:20:55,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:20:55,011 INFO L470 AbstractCegarLoop]: Abstraction has 820 states and 1040 transitions. [2021-12-18 00:20:55,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 8 states have internal predecessors, (74), 2 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2021-12-18 00:20:55,012 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1040 transitions. [2021-12-18 00:20:55,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-12-18 00:20:55,014 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:20:55,014 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:20:55,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-18 00:20:55,014 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:20:55,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:20:55,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1897347155, now seen corresponding path program 1 times [2021-12-18 00:20:55,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:20:55,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94158620] [2021-12-18 00:20:55,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:20:55,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:20:55,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:55,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:20:55,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:55,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:20:55,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:55,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:20:55,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:55,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 00:20:55,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:55,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 00:20:55,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:55,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 00:20:55,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:55,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 00:20:55,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:55,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:20:55,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:55,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 00:20:55,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:55,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-18 00:20:55,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:55,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 00:20:55,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:55,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 00:20:55,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:55,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:20:55,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:55,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 00:20:55,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:55,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-18 00:20:55,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:55,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-18 00:20:55,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:55,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-18 00:20:55,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:55,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 00:20:55,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:56,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:20:56,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:56,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:20:56,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:56,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-18 00:20:56,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:56,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-18 00:20:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:56,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-18 00:20:56,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:56,320 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2021-12-18 00:20:56,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:20:56,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94158620] [2021-12-18 00:20:56,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94158620] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:20:56,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791965065] [2021-12-18 00:20:56,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:20:56,320 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:20:56,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:20:56,322 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:20:56,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-12-18 00:20:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:20:56,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 2944 conjuncts, 115 conjunts are in the unsatisfiable core [2021-12-18 00:20:56,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:20:57,156 INFO L388 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 [2021-12-18 00:21:03,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 00:21:03,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-12-18 00:21:03,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 00:21:03,672 WARN L860 $PredicateComparison]: unable to prove that (exists ((|save_byte_from_array_~storage#1.base| Int) (v_arrayElimArr_1 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |save_byte_from_array_~storage#1.base| v_arrayElimArr_1))) is different from true [2021-12-18 00:21:03,683 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 00:21:03,683 INFO L388 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 17 treesize of output 23 [2021-12-18 00:21:03,688 INFO L388 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 8 treesize of output 4 [2021-12-18 00:21:06,021 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_~b#1.base_BEFORE_CALL_88| Int)) (= 0 (mod (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_~b#1.base_BEFORE_CALL_88|) 0) 18446744073709551616))) (exists ((|v_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_~b#1.base_BEFORE_CALL_88| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_~b#1.base_BEFORE_CALL_88|) 8) 0))) (exists ((|v_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_~b#1.base_BEFORE_CALL_88| Int)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_~b#1.base_BEFORE_CALL_88|) 8) 0)))) is different from true [2021-12-18 00:21:08,204 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_~b#1.base_BEFORE_CALL_89| Int)) (= 0 (mod (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_~b#1.base_BEFORE_CALL_89|) 0) 18446744073709551616))) (exists ((|v_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_~b#1.base_BEFORE_CALL_89| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_~b#1.base_BEFORE_CALL_89|) 8) 0))) (exists ((|v_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_~b#1.base_BEFORE_CALL_89| Int)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_~b#1.base_BEFORE_CALL_89|) 8) 0)))) is different from true [2021-12-18 00:21:10,384 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_~b#1.base_BEFORE_CALL_90| Int)) (= 0 (mod (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_~b#1.base_BEFORE_CALL_90|) 0) 18446744073709551616))) (exists ((|v_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_~b#1.base_BEFORE_CALL_90| Int)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_~b#1.base_BEFORE_CALL_90|) 8) 0))) (exists ((|v_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_~b#1.base_BEFORE_CALL_90| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_~b#1.base_BEFORE_CALL_90|) 8) 0)))) is different from true [2021-12-18 00:21:20,664 WARN L227 SmtUtils]: Spent 8.06s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-18 00:21:27,238 WARN L227 SmtUtils]: Spent 6.07s on a formula simplification that was a NOOP. DAG size: 46 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-18 00:21:32,205 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 00:21:32,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 62 [2021-12-18 00:21:32,211 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 00:21:32,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 72 [2021-12-18 00:21:32,216 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 00:21:32,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 68 [2021-12-18 00:21:32,297 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 65 proven. 78 refuted. 0 times theorem prover too weak. 109 trivial. 9 not checked. [2021-12-18 00:21:32,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:21:34,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791965065] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:21:34,043 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 00:21:34,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37] total 70 [2021-12-18 00:21:34,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609640398] [2021-12-18 00:21:34,044 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 00:21:34,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2021-12-18 00:21:34,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:21:34,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-12-18 00:21:34,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=6076, Unknown=9, NotChecked=636, Total=6972 [2021-12-18 00:21:34,045 INFO L87 Difference]: Start difference. First operand 820 states and 1040 transitions. Second operand has 70 states, 61 states have (on average 2.9344262295081966) internal successors, (179), 60 states have internal predecessors, (179), 24 states have call successors, (47), 9 states have call predecessors, (47), 18 states have return successors, (46), 24 states have call predecessors, (46), 23 states have call successors, (46) [2021-12-18 00:22:14,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:22:14,816 INFO L93 Difference]: Finished difference Result 1028 states and 1363 transitions. [2021-12-18 00:22:14,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-12-18 00:22:14,816 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 61 states have (on average 2.9344262295081966) internal successors, (179), 60 states have internal predecessors, (179), 24 states have call successors, (47), 9 states have call predecessors, (47), 18 states have return successors, (46), 24 states have call predecessors, (46), 23 states have call successors, (46) Word has length 188 [2021-12-18 00:22:14,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:22:14,820 INFO L225 Difference]: With dead ends: 1028 [2021-12-18 00:22:14,820 INFO L226 Difference]: Without dead ends: 1026 [2021-12-18 00:22:14,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 221 SyntacticMatches, 12 SemanticMatches, 142 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 5071 ImplicationChecksByTransitivity, 73.5s TimeCoverageRelationStatistics Valid=972, Invalid=18453, Unknown=51, NotChecked=1116, Total=20592 [2021-12-18 00:22:14,822 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 315 mSDsluCounter, 3799 mSDsCounter, 0 mSdLazyCounter, 6424 mSolverCounterSat, 341 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 3952 SdHoareTripleChecker+Invalid, 9728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 341 IncrementalHoareTripleChecker+Valid, 6424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2963 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-18 00:22:14,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 3952 Invalid, 9728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [341 Valid, 6424 Invalid, 0 Unknown, 2963 Unchecked, 3.1s Time] [2021-12-18 00:22:14,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2021-12-18 00:22:14,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 890. [2021-12-18 00:22:14,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 890 states, 600 states have (on average 1.0966666666666667) internal successors, (658), 615 states have internal predecessors, (658), 204 states have call successors, (204), 72 states have call predecessors, (204), 85 states have return successors, (268), 202 states have call predecessors, (268), 202 states have call successors, (268) [2021-12-18 00:22:14,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1130 transitions. [2021-12-18 00:22:14,946 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1130 transitions. Word has length 188 [2021-12-18 00:22:14,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:22:14,946 INFO L470 AbstractCegarLoop]: Abstraction has 890 states and 1130 transitions. [2021-12-18 00:22:14,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 61 states have (on average 2.9344262295081966) internal successors, (179), 60 states have internal predecessors, (179), 24 states have call successors, (47), 9 states have call predecessors, (47), 18 states have return successors, (46), 24 states have call predecessors, (46), 23 states have call successors, (46) [2021-12-18 00:22:14,947 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1130 transitions. [2021-12-18 00:22:14,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-12-18 00:22:14,949 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:22:14,949 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:22:14,970 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2021-12-18 00:22:15,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-12-18 00:22:15,171 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:22:15,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:22:15,172 INFO L85 PathProgramCache]: Analyzing trace with hash 322399941, now seen corresponding path program 1 times [2021-12-18 00:22:15,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:22:15,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810781844] [2021-12-18 00:22:15,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:22:15,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:22:15,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:15,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:22:15,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:15,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:22:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:15,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:22:15,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:15,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 00:22:15,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:15,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 00:22:15,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:15,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 00:22:15,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:15,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 00:22:15,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:15,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:22:15,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:15,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 00:22:15,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:15,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-18 00:22:15,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:15,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 00:22:15,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:15,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:22:15,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:15,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-18 00:22:15,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:15,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:22:15,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:15,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-18 00:22:15,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:15,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 00:22:15,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:15,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-18 00:22:15,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:15,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-18 00:22:15,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:15,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-18 00:22:15,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:15,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:22:15,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:15,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:22:15,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:15,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-18 00:22:15,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:15,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-18 00:22:15,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:15,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-18 00:22:15,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:15,648 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2021-12-18 00:22:15,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:22:15,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810781844] [2021-12-18 00:22:15,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810781844] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:22:15,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204259046] [2021-12-18 00:22:15,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:22:15,649 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:22:15,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:22:15,650 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:22:15,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-12-18 00:22:16,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:16,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 2989 conjuncts, 39 conjunts are in the unsatisfiable core [2021-12-18 00:22:16,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:22:16,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-18 00:22:16,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 26 [2021-12-18 00:22:16,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 26 [2021-12-18 00:22:16,873 INFO L388 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 [2021-12-18 00:22:17,030 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 194 proven. 16 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-12-18 00:22:17,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:22:17,242 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3191 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base| v_ArrVal_3191) |c_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_harness_~#cur~3#1.base|) |c_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_harness_~#cur~3#1.offset|))) (<= .cse0 (* 18446744073709551616 (div .cse0 18446744073709551616))))) is different from false [2021-12-18 00:22:17,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204259046] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:22:17,248 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 00:22:17,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 22 [2021-12-18 00:22:17,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173206801] [2021-12-18 00:22:17,248 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 00:22:17,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-18 00:22:17,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:22:17,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-18 00:22:17,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=440, Unknown=1, NotChecked=42, Total=552 [2021-12-18 00:22:17,249 INFO L87 Difference]: Start difference. First operand 890 states and 1130 transitions. Second operand has 22 states, 21 states have (on average 7.333333333333333) internal successors, (154), 20 states have internal predecessors, (154), 15 states have call successors, (49), 5 states have call predecessors, (49), 5 states have return successors, (47), 13 states have call predecessors, (47), 15 states have call successors, (47) [2021-12-18 00:22:18,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:22:18,885 INFO L93 Difference]: Finished difference Result 1413 states and 1877 transitions. [2021-12-18 00:22:18,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-18 00:22:18,885 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 7.333333333333333) internal successors, (154), 20 states have internal predecessors, (154), 15 states have call successors, (49), 5 states have call predecessors, (49), 5 states have return successors, (47), 13 states have call predecessors, (47), 15 states have call successors, (47) Word has length 195 [2021-12-18 00:22:18,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:22:18,889 INFO L225 Difference]: With dead ends: 1413 [2021-12-18 00:22:18,889 INFO L226 Difference]: Without dead ends: 1075 [2021-12-18 00:22:18,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 363 SyntacticMatches, 19 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=182, Invalid=1153, Unknown=1, NotChecked=70, Total=1406 [2021-12-18 00:22:18,891 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 361 mSDsluCounter, 2003 mSDsCounter, 0 mSdLazyCounter, 2621 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 2265 SdHoareTripleChecker+Invalid, 3290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 2621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 345 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-18 00:22:18,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 2265 Invalid, 3290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 2621 Invalid, 0 Unknown, 345 Unchecked, 1.3s Time] [2021-12-18 00:22:18,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2021-12-18 00:22:18,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 906. [2021-12-18 00:22:18,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 612 states have (on average 1.0947712418300655) internal successors, (670), 627 states have internal predecessors, (670), 206 states have call successors, (206), 74 states have call predecessors, (206), 87 states have return successors, (269), 204 states have call predecessors, (269), 204 states have call successors, (269) [2021-12-18 00:22:18,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1145 transitions. [2021-12-18 00:22:18,984 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1145 transitions. Word has length 195 [2021-12-18 00:22:18,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:22:18,985 INFO L470 AbstractCegarLoop]: Abstraction has 906 states and 1145 transitions. [2021-12-18 00:22:18,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 7.333333333333333) internal successors, (154), 20 states have internal predecessors, (154), 15 states have call successors, (49), 5 states have call predecessors, (49), 5 states have return successors, (47), 13 states have call predecessors, (47), 15 states have call successors, (47) [2021-12-18 00:22:18,985 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1145 transitions. [2021-12-18 00:22:18,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-12-18 00:22:18,987 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:22:18,987 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:22:19,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-12-18 00:22:19,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:22:19,201 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:22:19,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:22:19,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1578080144, now seen corresponding path program 1 times [2021-12-18 00:22:19,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:22:19,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276469503] [2021-12-18 00:22:19,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:22:19,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:22:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:19,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:22:19,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:19,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:22:19,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:19,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:22:19,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:19,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 00:22:19,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:19,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 00:22:19,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:19,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 00:22:19,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:19,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 00:22:19,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:19,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:22:19,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:19,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 00:22:19,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:19,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-18 00:22:19,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:19,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 00:22:19,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:19,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 00:22:19,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:19,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:22:19,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:19,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 00:22:19,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:19,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-18 00:22:19,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:19,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-18 00:22:19,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:19,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-18 00:22:19,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:19,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 00:22:19,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:19,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:22:19,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:19,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:22:19,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:19,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-18 00:22:19,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:19,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-18 00:22:19,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:19,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-18 00:22:19,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:19,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-18 00:22:19,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:19,774 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2021-12-18 00:22:19,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:22:19,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276469503] [2021-12-18 00:22:19,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276469503] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:22:19,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 00:22:19,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-12-18 00:22:19,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050717500] [2021-12-18 00:22:19,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:22:19,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-18 00:22:19,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:22:19,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-18 00:22:19,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2021-12-18 00:22:19,775 INFO L87 Difference]: Start difference. First operand 906 states and 1145 transitions. Second operand has 21 states, 17 states have (on average 4.294117647058823) internal successors, (73), 16 states have internal predecessors, (73), 10 states have call successors, (25), 4 states have call predecessors, (25), 4 states have return successors, (24), 8 states have call predecessors, (24), 10 states have call successors, (24) [2021-12-18 00:22:21,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:22:21,460 INFO L93 Difference]: Finished difference Result 1182 states and 1469 transitions. [2021-12-18 00:22:21,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-18 00:22:21,475 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 4.294117647058823) internal successors, (73), 16 states have internal predecessors, (73), 10 states have call successors, (25), 4 states have call predecessors, (25), 4 states have return successors, (24), 8 states have call predecessors, (24), 10 states have call successors, (24) Word has length 197 [2021-12-18 00:22:21,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:22:21,479 INFO L225 Difference]: With dead ends: 1182 [2021-12-18 00:22:21,479 INFO L226 Difference]: Without dead ends: 923 [2021-12-18 00:22:21,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=142, Invalid=914, Unknown=0, NotChecked=0, Total=1056 [2021-12-18 00:22:21,480 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 295 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 2851 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 1314 SdHoareTripleChecker+Invalid, 3099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 2851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-18 00:22:21,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 1314 Invalid, 3099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 2851 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-18 00:22:21,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2021-12-18 00:22:21,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 892. [2021-12-18 00:22:21,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 892 states, 606 states have (on average 1.0957095709570956) internal successors, (664), 621 states have internal predecessors, (664), 198 states have call successors, (198), 74 states have call predecessors, (198), 87 states have return successors, (253), 196 states have call predecessors, (253), 196 states have call successors, (253) [2021-12-18 00:22:21,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1115 transitions. [2021-12-18 00:22:21,542 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1115 transitions. Word has length 197 [2021-12-18 00:22:21,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:22:21,542 INFO L470 AbstractCegarLoop]: Abstraction has 892 states and 1115 transitions. [2021-12-18 00:22:21,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 4.294117647058823) internal successors, (73), 16 states have internal predecessors, (73), 10 states have call successors, (25), 4 states have call predecessors, (25), 4 states have return successors, (24), 8 states have call predecessors, (24), 10 states have call successors, (24) [2021-12-18 00:22:21,542 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1115 transitions. [2021-12-18 00:22:21,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-18 00:22:21,544 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:22:21,546 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:22:21,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-18 00:22:21,546 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:22:21,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:22:21,547 INFO L85 PathProgramCache]: Analyzing trace with hash -732383824, now seen corresponding path program 1 times [2021-12-18 00:22:21,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:22:21,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238780904] [2021-12-18 00:22:21,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:22:21,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:22:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:21,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:22:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:21,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:22:21,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:21,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:22:21,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:21,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 00:22:21,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:21,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 00:22:21,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:21,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 00:22:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:21,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 00:22:21,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:21,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:22:21,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:21,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 00:22:21,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:22,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-18 00:22:22,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:22,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 00:22:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:22,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 00:22:22,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:22,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-18 00:22:22,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:22,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-18 00:22:22,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:22,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-18 00:22:22,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:22,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-18 00:22:22,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:22,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 00:22:22,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:22,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:22:22,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:22,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:22:22,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:22,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-18 00:22:22,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:22,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-18 00:22:22,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:22,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-18 00:22:22,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:22,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-12-18 00:22:22,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:22,297 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 4 proven. 44 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2021-12-18 00:22:22,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:22:22,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238780904] [2021-12-18 00:22:22,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238780904] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:22:22,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507770155] [2021-12-18 00:22:22,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:22:22,299 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:22:22,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:22:22,299 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:22:22,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-12-18 00:22:22,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:22:22,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 2905 conjuncts, 94 conjunts are in the unsatisfiable core [2021-12-18 00:22:22,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:22:22,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-18 00:22:23,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 00:22:23,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 00:22:23,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2021-12-18 00:22:24,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2021-12-18 00:24:40,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2021-12-18 00:24:40,254 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 31 proven. 136 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-12-18 00:24:40,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:25:15,844 INFO L388 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 55 treesize of output 49 [2021-12-18 00:25:16,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507770155] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:25:16,302 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 00:25:16,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 29] total 52 [2021-12-18 00:25:16,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235833932] [2021-12-18 00:25:16,302 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 00:25:16,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-12-18 00:25:16,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:25:16,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-12-18 00:25:16,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=4041, Unknown=52, NotChecked=0, Total=4422 [2021-12-18 00:25:16,303 INFO L87 Difference]: Start difference. First operand 892 states and 1115 transitions. Second operand has 52 states, 46 states have (on average 4.1521739130434785) internal successors, (191), 46 states have internal predecessors, (191), 21 states have call successors, (48), 10 states have call predecessors, (48), 13 states have return successors, (46), 16 states have call predecessors, (46), 19 states have call successors, (46) [2021-12-18 00:26:01,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:26:01,569 INFO L93 Difference]: Finished difference Result 1332 states and 1698 transitions. [2021-12-18 00:26:01,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-12-18 00:26:01,569 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 46 states have (on average 4.1521739130434785) internal successors, (191), 46 states have internal predecessors, (191), 21 states have call successors, (48), 10 states have call predecessors, (48), 13 states have return successors, (46), 16 states have call predecessors, (46), 19 states have call successors, (46) Word has length 190 [2021-12-18 00:26:01,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:26:01,573 INFO L225 Difference]: With dead ends: 1332 [2021-12-18 00:26:01,573 INFO L226 Difference]: Without dead ends: 1224 [2021-12-18 00:26:01,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 325 SyntacticMatches, 32 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4948 ImplicationChecksByTransitivity, 208.2s TimeCoverageRelationStatistics Valid=1199, Invalid=13246, Unknown=75, NotChecked=0, Total=14520 [2021-12-18 00:26:01,575 INFO L933 BasicCegarLoop]: 323 mSDtfsCounter, 858 mSDsluCounter, 3872 mSDsCounter, 0 mSdLazyCounter, 7896 mSolverCounterSat, 660 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 4195 SdHoareTripleChecker+Invalid, 10323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 660 IncrementalHoareTripleChecker+Valid, 7896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1767 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-12-18 00:26:01,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [893 Valid, 4195 Invalid, 10323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [660 Valid, 7896 Invalid, 0 Unknown, 1767 Unchecked, 4.7s Time] [2021-12-18 00:26:01,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2021-12-18 00:26:01,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1004. [2021-12-18 00:26:01,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 694 states have (on average 1.0936599423631124) internal successors, (759), 709 states have internal predecessors, (759), 210 states have call successors, (210), 86 states have call predecessors, (210), 99 states have return successors, (265), 208 states have call predecessors, (265), 207 states have call successors, (265) [2021-12-18 00:26:01,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1234 transitions. [2021-12-18 00:26:01,647 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1234 transitions. Word has length 190 [2021-12-18 00:26:01,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:26:01,647 INFO L470 AbstractCegarLoop]: Abstraction has 1004 states and 1234 transitions. [2021-12-18 00:26:01,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 46 states have (on average 4.1521739130434785) internal successors, (191), 46 states have internal predecessors, (191), 21 states have call successors, (48), 10 states have call predecessors, (48), 13 states have return successors, (46), 16 states have call predecessors, (46), 19 states have call successors, (46) [2021-12-18 00:26:01,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1234 transitions. [2021-12-18 00:26:01,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-12-18 00:26:01,649 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:26:01,649 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:26:01,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-12-18 00:26:01,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-12-18 00:26:01,871 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:26:01,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:26:01,871 INFO L85 PathProgramCache]: Analyzing trace with hash -687529013, now seen corresponding path program 1 times [2021-12-18 00:26:01,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:26:01,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985627908] [2021-12-18 00:26:01,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:26:01,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:26:02,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:26:02,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:26:02,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:26:02,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:26:02,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:26:02,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:26:02,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:26:02,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 00:26:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:26:02,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 00:26:02,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:26:02,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 00:26:02,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:26:02,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 00:26:02,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:26:02,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:26:02,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:26:02,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 00:26:02,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:26:02,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-18 00:26:02,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:26:02,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 00:26:02,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:26:02,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 00:26:02,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:26:02,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:26:02,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:26:02,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 00:26:02,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:26:02,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-18 00:26:02,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:26:02,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 00:26:02,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:26:02,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 00:26:02,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:26:02,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 00:26:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:26:02,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:26:02,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:26:02,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:26:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:26:02,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-18 00:26:02,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:26:02,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-18 00:26:02,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:26:02,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-12-18 00:26:02,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:26:02,784 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 2 proven. 26 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2021-12-18 00:26:02,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:26:02,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985627908] [2021-12-18 00:26:02,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985627908] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:26:02,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386421230] [2021-12-18 00:26:02,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:26:02,789 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:26:02,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:26:02,790 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:26:02,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-12-18 00:26:03,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:26:03,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 2988 conjuncts, 144 conjunts are in the unsatisfiable core [2021-12-18 00:26:03,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:26:03,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:26:03,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-18 00:26:04,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:26:04,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-18 00:26:04,167 INFO L388 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 [2021-12-18 00:26:05,106 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3479 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_save_byte_from_array_~storage#1.base| v_ArrVal_3479))) (exists ((v_ArrVal_3480 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_save_byte_from_array_~storage#1.base| v_ArrVal_3480)))) is different from true [2021-12-18 00:26:05,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 00:26:05,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 00:26:05,130 WARN L860 $PredicateComparison]: unable to prove that (exists ((|save_byte_from_array_~storage#1.base| Int)) (and (exists ((v_ArrVal_3482 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |save_byte_from_array_~storage#1.base| v_ArrVal_3482))) (exists ((v_ArrVal_3481 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |save_byte_from_array_~storage#1.base| v_ArrVal_3481))))) is different from true [2021-12-18 00:26:05,170 INFO L354 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2021-12-18 00:26:05,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 43 [2021-12-18 00:26:05,184 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 00:26:05,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2021-12-18 00:26:05,205 INFO L388 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 8 treesize of output 4 [2021-12-18 00:26:05,230 INFO L388 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 8 treesize of output 6 [2021-12-18 00:26:05,244 INFO L388 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 5 [2021-12-18 00:26:29,354 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 00:26:29,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 66 [2021-12-18 00:26:34,417 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 93 proven. 135 refuted. 0 times theorem prover too weak. 37 trivial. 2 not checked. [2021-12-18 00:26:34,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:26:35,784 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_save_byte_from_array_~storage#1.base_97| Int) (v_ArrVal_3489 (Array Int Int)) (v_ArrVal_3490 (Array Int Int))) (or (not (= (select (select (store |c_#memory_$Pointer$.base| |v_save_byte_from_array_~storage#1.base_97| v_ArrVal_3489) |c_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_harness_~#buf~3#1.base|) (+ |c_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_harness_~#buf~3#1.offset| 8)) 0)) (= 0 (mod (select (select (store |c_#memory_int| |v_save_byte_from_array_~storage#1.base_97| v_ArrVal_3490) |c_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_harness_~#cur~3#1.base|) |c_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_harness_~#cur~3#1.offset|) 18446744073709551616)))) is different from false [2021-12-18 00:26:35,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386421230] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:26:35,785 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 00:26:35,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 44] total 69 [2021-12-18 00:26:35,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621011319] [2021-12-18 00:26:35,785 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 00:26:35,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2021-12-18 00:26:35,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:26:35,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-12-18 00:26:35,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=6286, Unknown=8, NotChecked=486, Total=7140 [2021-12-18 00:26:35,786 INFO L87 Difference]: Start difference. First operand 1004 states and 1234 transitions. Second operand has 69 states, 63 states have (on average 3.492063492063492) internal successors, (220), 58 states have internal predecessors, (220), 25 states have call successors, (48), 11 states have call predecessors, (48), 18 states have return successors, (46), 25 states have call predecessors, (46), 24 states have call successors, (46) [2021-12-18 00:27:08,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:27:08,587 INFO L93 Difference]: Finished difference Result 1650 states and 2117 transitions. [2021-12-18 00:27:08,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-12-18 00:27:08,588 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 63 states have (on average 3.492063492063492) internal successors, (220), 58 states have internal predecessors, (220), 25 states have call successors, (48), 11 states have call predecessors, (48), 18 states have return successors, (46), 25 states have call predecessors, (46), 24 states have call successors, (46) Word has length 200 [2021-12-18 00:27:08,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:27:08,601 INFO L225 Difference]: With dead ends: 1650 [2021-12-18 00:27:08,602 INFO L226 Difference]: Without dead ends: 1343 [2021-12-18 00:27:08,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 285 SyntacticMatches, 25 SemanticMatches, 140 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 6771 ImplicationChecksByTransitivity, 57.3s TimeCoverageRelationStatistics Valid=1157, Invalid=17982, Unknown=55, NotChecked=828, Total=20022 [2021-12-18 00:27:08,604 INFO L933 BasicCegarLoop]: 295 mSDtfsCounter, 876 mSDsluCounter, 4076 mSDsCounter, 0 mSdLazyCounter, 7772 mSolverCounterSat, 1102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 4371 SdHoareTripleChecker+Invalid, 13769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1102 IncrementalHoareTripleChecker+Valid, 7772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4895 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-12-18 00:27:08,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [908 Valid, 4371 Invalid, 13769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1102 Valid, 7772 Invalid, 0 Unknown, 4895 Unchecked, 5.1s Time] [2021-12-18 00:27:08,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2021-12-18 00:27:08,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 1088. [2021-12-18 00:27:08,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1088 states, 749 states have (on average 1.0934579439252337) internal successors, (819), 762 states have internal predecessors, (819), 234 states have call successors, (234), 93 states have call predecessors, (234), 104 states have return successors, (289), 232 states have call predecessors, (289), 231 states have call successors, (289) [2021-12-18 00:27:08,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1088 states to 1088 states and 1342 transitions. [2021-12-18 00:27:08,687 INFO L78 Accepts]: Start accepts. Automaton has 1088 states and 1342 transitions. Word has length 200 [2021-12-18 00:27:08,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:27:08,688 INFO L470 AbstractCegarLoop]: Abstraction has 1088 states and 1342 transitions. [2021-12-18 00:27:08,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 63 states have (on average 3.492063492063492) internal successors, (220), 58 states have internal predecessors, (220), 25 states have call successors, (48), 11 states have call predecessors, (48), 18 states have return successors, (46), 25 states have call predecessors, (46), 24 states have call successors, (46) [2021-12-18 00:27:08,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1088 states and 1342 transitions. [2021-12-18 00:27:08,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-12-18 00:27:08,690 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:27:08,691 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:27:08,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-12-18 00:27:08,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-12-18 00:27:08,904 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:27:08,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:27:08,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1374617034, now seen corresponding path program 1 times [2021-12-18 00:27:08,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:27:08,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279923345] [2021-12-18 00:27:08,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:27:08,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:27:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:27:08,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:27:08,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:27:08,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:27:09,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:27:09,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:27:09,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:27:09,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 00:27:09,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:27:09,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 00:27:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:27:09,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 00:27:09,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:27:09,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 00:27:09,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:27:09,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:27:09,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:27:09,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 00:27:09,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:27:09,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-18 00:27:09,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:27:09,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 00:27:09,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:27:09,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 00:27:09,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:27:09,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:27:09,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:27:09,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 00:27:09,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:27:09,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-18 00:27:09,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:27:09,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-18 00:27:09,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:27:09,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-18 00:27:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:27:09,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 00:27:09,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:27:09,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:27:09,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:27:09,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:27:09,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:27:09,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-18 00:27:09,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:27:09,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-18 00:27:09,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:27:09,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-18 00:27:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:27:09,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-18 00:27:09,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:27:09,116 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2021-12-18 00:27:09,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:27:09,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279923345] [2021-12-18 00:27:09,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279923345] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:27:09,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 00:27:09,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 00:27:09,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384197420] [2021-12-18 00:27:09,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:27:09,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 00:27:09,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:27:09,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 00:27:09,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-18 00:27:09,118 INFO L87 Difference]: Start difference. First operand 1088 states and 1342 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-18 00:27:09,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:27:09,692 INFO L93 Difference]: Finished difference Result 1492 states and 1955 transitions. [2021-12-18 00:27:09,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 00:27:09,692 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) Word has length 196 [2021-12-18 00:27:09,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:27:09,697 INFO L225 Difference]: With dead ends: 1492 [2021-12-18 00:27:09,697 INFO L226 Difference]: Without dead ends: 1247 [2021-12-18 00:27:09,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-12-18 00:27:09,702 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 162 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-18 00:27:09,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 1101 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-18 00:27:09,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. Killed by 15